The document discusses requirements analysis and specification. It describes how requirements gathering involves determining user needs through various techniques like interviews, surveys, prototyping and observation. The requirements analysis phase aims to fully understand requirements, remove inconsistencies and document them clearly. The specification phase defines the requirements in a Software Requirements Specification document, which serves as a contract between developers and customers. The SRS should describe functionality without specifying solutions and have properties like consistency, traceability and verifiability.
Software Engineering- Requirement Elicitation and SpecificationNishu Rastogi
The document discusses the process of requirements engineering for software development. It involves four main steps:
1) Feasibility study to determine if the project is possible.
2) Requirements gathering by communicating with clients and users to understand what the software should do.
3) Creating a software requirements specification (SRS) document that defines system functions and constraints.
4) Validating requirements to ensure they are clear, consistent, and can be implemented.
Requirements Analysis and Specification.pdfAayushMishra89
The document discusses requirements analysis and specification. It begins by explaining why requirements analysis is important and outlines the goals of the requirements analysis phase, which are to fully understand user requirements, remove inconsistencies from requirements, and properly document requirements in a Software Requirements Specification (SRS) document. The document then discusses requirements gathering, analysis, and specification. It provides examples of how to represent requirements using decision trees and decision tables and outlines the necessary components and properties of a good SRS document.
The document discusses software requirement specification and the requirement engineering process. It describes how requirements are elicited from stakeholders, analyzed for consistency and completeness, and specified in a requirements document. The key activities in requirements engineering include requirements elicitation, analysis, validation, and management, which are iterative processes.
The document discusses software requirements and specifications. It explains that requirements engineering is the process of establishing customer requirements for a system. Requirements can range from high-level abstract statements to detailed functional specifications. Both types of statements may be called requirements. The document also discusses different types of requirements like user requirements, system requirements, functional requirements, and non-functional requirements. It provides examples and explanations of each. The structure and intended users of a requirements document are also covered.
The document discusses requirements elicitation, which involves determining what a system or product needs to do from users and stakeholders. It notes that requirements elicitation is difficult because stakeholders may not know their needs, have conflicting needs, or changing needs. The document then describes different types of requirements like functional requirements, which define what a system does, and non-functional requirements, also called quality attributes, which define how the system achieves its functions. Examples of different types of requirements are also provided.
1. Requirements analysis identifies customer needs, evaluates feasibility, and establishes system definitions and specifications. It bridges the gap between requirements engineering and system design.
2. Requirements analysis has several phases including problem recognition, evaluation and synthesis of possible solutions, help modeling, and writing definitions and specifications. It also considers management questions around effort, roles, challenges, and costs.
3. Requirements analysis determines functional requirements describing system behavior and inputs/outputs, as well as non-functional requirements around performance, interfaces, and user factors. It also validates that requirements are correct, consistent, complete, and testable.
This document discusses different views of requirements and problems that can occur with requirements. It covers user/customer requirements, which should be understandable by non-technical users, versus system contract requirements, which provide more technical details for designers and developers. Problems discussed include requirements not reflecting real user needs, inconsistencies, misunderstandings between stakeholders, and issues with using natural language which can lack clarity or allow the same concept to be expressed differently.
Software Engineering- Requirement Elicitation and SpecificationNishu Rastogi
The document discusses the process of requirements engineering for software development. It involves four main steps:
1) Feasibility study to determine if the project is possible.
2) Requirements gathering by communicating with clients and users to understand what the software should do.
3) Creating a software requirements specification (SRS) document that defines system functions and constraints.
4) Validating requirements to ensure they are clear, consistent, and can be implemented.
Requirements Analysis and Specification.pdfAayushMishra89
The document discusses requirements analysis and specification. It begins by explaining why requirements analysis is important and outlines the goals of the requirements analysis phase, which are to fully understand user requirements, remove inconsistencies from requirements, and properly document requirements in a Software Requirements Specification (SRS) document. The document then discusses requirements gathering, analysis, and specification. It provides examples of how to represent requirements using decision trees and decision tables and outlines the necessary components and properties of a good SRS document.
The document discusses software requirement specification and the requirement engineering process. It describes how requirements are elicited from stakeholders, analyzed for consistency and completeness, and specified in a requirements document. The key activities in requirements engineering include requirements elicitation, analysis, validation, and management, which are iterative processes.
The document discusses software requirements and specifications. It explains that requirements engineering is the process of establishing customer requirements for a system. Requirements can range from high-level abstract statements to detailed functional specifications. Both types of statements may be called requirements. The document also discusses different types of requirements like user requirements, system requirements, functional requirements, and non-functional requirements. It provides examples and explanations of each. The structure and intended users of a requirements document are also covered.
The document discusses requirements elicitation, which involves determining what a system or product needs to do from users and stakeholders. It notes that requirements elicitation is difficult because stakeholders may not know their needs, have conflicting needs, or changing needs. The document then describes different types of requirements like functional requirements, which define what a system does, and non-functional requirements, also called quality attributes, which define how the system achieves its functions. Examples of different types of requirements are also provided.
1. Requirements analysis identifies customer needs, evaluates feasibility, and establishes system definitions and specifications. It bridges the gap between requirements engineering and system design.
2. Requirements analysis has several phases including problem recognition, evaluation and synthesis of possible solutions, help modeling, and writing definitions and specifications. It also considers management questions around effort, roles, challenges, and costs.
3. Requirements analysis determines functional requirements describing system behavior and inputs/outputs, as well as non-functional requirements around performance, interfaces, and user factors. It also validates that requirements are correct, consistent, complete, and testable.
This document discusses different views of requirements and problems that can occur with requirements. It covers user/customer requirements, which should be understandable by non-technical users, versus system contract requirements, which provide more technical details for designers and developers. Problems discussed include requirements not reflecting real user needs, inconsistencies, misunderstandings between stakeholders, and issues with using natural language which can lack clarity or allow the same concept to be expressed differently.
This document discusses different views of requirements and problems that can occur with requirements. It covers user/customer requirements, which describe expected system services in natural language, versus system contract requirements, which provide more technical details to serve as a contract for implementation. Problems discussed include requirements not reflecting real customer needs, inconsistencies, misunderstandings between stakeholders, and issues with using natural language like lack of clarity.
This document provides an overview of software engineering and the software development life cycle (SDLC). It discusses the classical waterfall model and its phases: feasibility study, requirements analysis, design, coding/testing, integration/testing, and maintenance. It also covers other SDLC models like prototyping, evolutionary, iterative waterfall, and spiral models. The classical waterfall model is sequential but other iterative models allow for feedback between phases to refine requirements and address issues earlier.
The document provides an overview of requirements analysis and specification. It discusses the importance of thoroughly understanding requirements before building a system. Requirements analysis involves gathering requirements through techniques like interviews and analyzing them to resolve inconsistencies. The key outputs are the software requirements specification document, which describes the system functions, non-functional requirements, and constraints in a black-box manner. Complex logic is represented using decision trees and tables. The overall goals are to fully understand user needs and document them properly to form the basis for development.
This document provides an overview of requirements engineering concepts from lectures 7 and 8, including:
1. It defines software requirements according to IEEE standards and discusses the requirements engineering process.
2. It outlines the different types of requirements like functional, non-functional, user, and system requirements and provides examples.
3. It explains the importance of requirements for stakeholders like customers, project managers, engineers and testers and why comprehensive requirements are needed.
The document discusses requirements analysis and specifications. It provides examples of different types of requirements like functional, non-functional, user, and system requirements. It also describes various requirement elicitation techniques like interviews, brainstorming sessions, FAST, quality function deployment, and use case approach. Context and data flow diagrams are discussed as models for representing requirements. Data dictionaries are described as repositories for defining data items. Finally, entity-relationship modeling is introduced as a way to visually represent entities, attributes, and relationships in a database.
This document discusses different levels of software requirements including business requirements, user requirements, functional requirements, and non-functional requirements. It also describes the importance of involving stakeholders, and outlines characteristics of good requirement statements and specifications such as being complete, consistent, unambiguous, and traceable.
The document discusses software requirements engineering and analysis. It describes the various functions involved in requirements engineering including inception, elicitation, elaboration, negotiation, specification, validation and requirements management. It also discusses developing use cases and building an analysis model to bridge the gap between system description and design model. The analysis model involves problem recognition, evaluation and synthesis, modelling, and specification review.
Requirements engineering process in software engineeringPreeti Mishra
Requirement Engineering (RE) involves understanding what customers want through tasks like elicitation, negotiation, and specification. RE helps establish requirements that provide a solid foundation for design and construction. The key RE tasks are inception to understand the problem, elicitation by drawing out requirements, elaboration by creating analysis models, negotiation to agree on a realistic solution, specification to formally describe requirements, validation to check for errors or issues, and management of changing requirements. RE helps software engineers better understand problems to solve through participation with customers, managers, and end users.
The document discusses the key tasks in requirements engineering: inception to initially understand user needs, elicitation to gather requirements, elaboration to further analyze and model requirements, negotiation to reconcile conflicts, specification to formally document requirements, validation to verify requirements quality, and management to track requirements throughout the project. The tasks involve collaborative activities like interviews and workshops to capture ambiguous and changing user needs and transform them into clear, consistent requirements that form the basis for subsequent software design and development.
This document discusses software requirements engineering and provides examples of functional requirements. It defines functional requirements as statements that describe what the system will do without describing how. The document emphasizes that functional requirements form the basis for all software projects and capture the behavioral aspects and functions of the system. It provides examples of functional requirements and notes that incomplete or ambiguous requirements can lead to poor quality software.
This document provides an introduction to software requirements engineering. It defines what requirements are and explains that they form the basis for all software products. Requirements engineering is the process of systematically determining what the software system needs to do. There are different types of requirements, including functional requirements, which describe what functions or services the system should provide. Non-functional requirements, domain requirements, and other kinds of requirements are also discussed. Examples of functional requirements are provided to illustrate the level of detail and potential ambiguities. The importance of clear, unambiguous requirements for developing quality software is emphasized.
The document discusses software requirements engineering. It describes what requirements are, different types of requirements including functional and non-functional requirements. It explains the requirements engineering process which includes activities like elicitation, analysis, validation and management. It also discusses modeling techniques used for requirements like prototyping and functional modeling using data flow diagrams. The requirements specification document is the key output which defines what the system needs to do at a high level without describing how it will be implemented.
The document discusses key concepts in software requirements engineering including requirements, requirements engineering activities, and types of requirements. It defines a requirement as a statement that captures stakeholder needs and must be met for a system to solve a problem. Requirements engineering involves eliciting, analyzing, specifying, and managing requirements throughout the system development lifecycle. There are functional requirements that define what a system should do and non-functional requirements relating to qualities like performance, security, and usability. The document outlines common requirements engineering processes such as elicitation, analysis, specification, and management.
16_10_2018 non functional requirements vbeyokob767
Functional and non-functional requirements specifications define what a software system must do and how it should behave. There are several types of requirements at different levels, including business, user, and system requirements. Functional requirements describe the features and functions of a system, while non-functional requirements establish constraints like usability, security, and performance. Requirements can be documented through specifications, use cases, user stories, prototypes, and diagrams to facilitate development and ensure stakeholders agree on goals.
This document provides instructions for students to complete practical projects related to project management. It outlines 4 practical assignments:
1. Create a System Requirement Study (SRS) for a sample inventory management project using UML diagrams.
2. Use the waterfall model to prepare a flow chart and Gantt chart for a student project.
3. Estimate the cost of a project using Function Point Analysis (FPA), which involves counting types of system functions and weighing them based on complexity.
4. Estimate the cost of a project using the COCOMO model, which is a regression model that uses parameters from historical data and current project characteristics in a basic formula.
The document discusses key aspects of developing a software requirements specification (SRS) document. It notes that the SRS serves as a contract between developers and customers, detailing functional and non-functional requirements without specifying solutions. An effective SRS is unambiguous, complete, verifiable, consistent, modifiable, traceable and usable for subsequent development and maintenance phases. The document provides examples of both good and bad SRS qualities.
The document discusses software requirements engineering and defines functional requirements. It states that functional requirements describe what a system should do, including how it will react to inputs and behave in different situations. Functional requirements capture the functionality and sequencing of a system. They are important as customers and developers focus on functional requirements. Examples of functional requirements are provided such as solving equations, searching a database, and providing document viewers.
The document discusses various types of software requirements including functional requirements, non-functional requirements, interface requirements, and design and constraints requirements. It provides details on each type of requirement such as how functional requirements define the basic facilities the system should offer and how non-functional requirements relate to quality constraints. The document also covers requirement engineering processes like elicitation, analysis, specification, verification and validation, and management. Overall, the document provides an overview of different classifications of software requirements and the requirement engineering lifecycle.
1 Software Requirements Descriptions and specification.docxjeremylockett77
1
Software Requirements
Descriptions and specifications
of a system
What is a requirement?
• May range from
– a high-level abstract statement of a service
or
– a statement of a system constraint to a
detailed mathematical functional specification
• Requirements may be used for
– a bid for a contract
• must be open to interpretation
– the basis for the contract itself
• must be defined in detail
• Both the above statements may be called
requirements
Example Example
……
4.A.5 The database shall support the generation and control of
configuration objects; that is, objects which are themselves groupings
of other objects in the database. The configuration control facilities
shall allow access to the objects in a version group by the use of an
incomplete name.
……
2
Types of requirements
• Written for customers
– User requirements
• Statements in natural language plus diagrams of the
services the system provides and its operational
constraints.
• Written as a contract between client and
contractor
– System requirements
• A structured document setting out detailed
descriptions of the system services.
• Written for developers
– Software specification
• A detailed software description which can serve as a
basis for a design or implementation.
User requirements readers
• Client managers
• System end-users
• Client engineers
• Contractor managers
• System architects
System requirements readers
• System end-users
• Client engineers
• System architects
• Software developers
Software specification readers
• Client engineers (maybe)
• System architects
• Software developers
3
We will come back to user
and system requirements
Functional requirements
• Statements of services the system
should provide, how the system
should react to particular inputs
and how the system should behave
in particular situations.
Functional requirements
• Describe functionality or system services
• Depend on the type of software,
expected users and the type of system
where the software is used
• Functional user requirements may be
high-level statements of what the
system should do but functional system
requirements should describe the system
services in detail
Examples of functional
requirements
1. The user shall be able to search either
all of the initial set of databases or
select a subset from it.
2. The system shall provide appropriate
viewers for the user to read documents
in the document store.
3. Every order shall be allocated a unique
identifier (ORDER_ID) which the user
shall be able to copy to the account’s
permanent storage area.
4
Requirements imprecision
• Problems arise when requirements are
not precisely stated
• Ambiguous requirements may be
interpreted in different ways by
developers and users
• Consider the term ‘appropriate viewers’
– User intention - special purpose viewer fo ...
artificial intelligence and data science contents.pptxGauravCar
What is artificial intelligence? Artificial intelligence is the ability of a computer or computer-controlled robot to perform tasks that are commonly associated with the intellectual processes characteristic of humans, such as the ability to reason.
› ...
Artificial intelligence (AI) | Definitio
This document discusses different views of requirements and problems that can occur with requirements. It covers user/customer requirements, which describe expected system services in natural language, versus system contract requirements, which provide more technical details to serve as a contract for implementation. Problems discussed include requirements not reflecting real customer needs, inconsistencies, misunderstandings between stakeholders, and issues with using natural language like lack of clarity.
This document provides an overview of software engineering and the software development life cycle (SDLC). It discusses the classical waterfall model and its phases: feasibility study, requirements analysis, design, coding/testing, integration/testing, and maintenance. It also covers other SDLC models like prototyping, evolutionary, iterative waterfall, and spiral models. The classical waterfall model is sequential but other iterative models allow for feedback between phases to refine requirements and address issues earlier.
The document provides an overview of requirements analysis and specification. It discusses the importance of thoroughly understanding requirements before building a system. Requirements analysis involves gathering requirements through techniques like interviews and analyzing them to resolve inconsistencies. The key outputs are the software requirements specification document, which describes the system functions, non-functional requirements, and constraints in a black-box manner. Complex logic is represented using decision trees and tables. The overall goals are to fully understand user needs and document them properly to form the basis for development.
This document provides an overview of requirements engineering concepts from lectures 7 and 8, including:
1. It defines software requirements according to IEEE standards and discusses the requirements engineering process.
2. It outlines the different types of requirements like functional, non-functional, user, and system requirements and provides examples.
3. It explains the importance of requirements for stakeholders like customers, project managers, engineers and testers and why comprehensive requirements are needed.
The document discusses requirements analysis and specifications. It provides examples of different types of requirements like functional, non-functional, user, and system requirements. It also describes various requirement elicitation techniques like interviews, brainstorming sessions, FAST, quality function deployment, and use case approach. Context and data flow diagrams are discussed as models for representing requirements. Data dictionaries are described as repositories for defining data items. Finally, entity-relationship modeling is introduced as a way to visually represent entities, attributes, and relationships in a database.
This document discusses different levels of software requirements including business requirements, user requirements, functional requirements, and non-functional requirements. It also describes the importance of involving stakeholders, and outlines characteristics of good requirement statements and specifications such as being complete, consistent, unambiguous, and traceable.
The document discusses software requirements engineering and analysis. It describes the various functions involved in requirements engineering including inception, elicitation, elaboration, negotiation, specification, validation and requirements management. It also discusses developing use cases and building an analysis model to bridge the gap between system description and design model. The analysis model involves problem recognition, evaluation and synthesis, modelling, and specification review.
Requirements engineering process in software engineeringPreeti Mishra
Requirement Engineering (RE) involves understanding what customers want through tasks like elicitation, negotiation, and specification. RE helps establish requirements that provide a solid foundation for design and construction. The key RE tasks are inception to understand the problem, elicitation by drawing out requirements, elaboration by creating analysis models, negotiation to agree on a realistic solution, specification to formally describe requirements, validation to check for errors or issues, and management of changing requirements. RE helps software engineers better understand problems to solve through participation with customers, managers, and end users.
The document discusses the key tasks in requirements engineering: inception to initially understand user needs, elicitation to gather requirements, elaboration to further analyze and model requirements, negotiation to reconcile conflicts, specification to formally document requirements, validation to verify requirements quality, and management to track requirements throughout the project. The tasks involve collaborative activities like interviews and workshops to capture ambiguous and changing user needs and transform them into clear, consistent requirements that form the basis for subsequent software design and development.
This document discusses software requirements engineering and provides examples of functional requirements. It defines functional requirements as statements that describe what the system will do without describing how. The document emphasizes that functional requirements form the basis for all software projects and capture the behavioral aspects and functions of the system. It provides examples of functional requirements and notes that incomplete or ambiguous requirements can lead to poor quality software.
This document provides an introduction to software requirements engineering. It defines what requirements are and explains that they form the basis for all software products. Requirements engineering is the process of systematically determining what the software system needs to do. There are different types of requirements, including functional requirements, which describe what functions or services the system should provide. Non-functional requirements, domain requirements, and other kinds of requirements are also discussed. Examples of functional requirements are provided to illustrate the level of detail and potential ambiguities. The importance of clear, unambiguous requirements for developing quality software is emphasized.
The document discusses software requirements engineering. It describes what requirements are, different types of requirements including functional and non-functional requirements. It explains the requirements engineering process which includes activities like elicitation, analysis, validation and management. It also discusses modeling techniques used for requirements like prototyping and functional modeling using data flow diagrams. The requirements specification document is the key output which defines what the system needs to do at a high level without describing how it will be implemented.
The document discusses key concepts in software requirements engineering including requirements, requirements engineering activities, and types of requirements. It defines a requirement as a statement that captures stakeholder needs and must be met for a system to solve a problem. Requirements engineering involves eliciting, analyzing, specifying, and managing requirements throughout the system development lifecycle. There are functional requirements that define what a system should do and non-functional requirements relating to qualities like performance, security, and usability. The document outlines common requirements engineering processes such as elicitation, analysis, specification, and management.
16_10_2018 non functional requirements vbeyokob767
Functional and non-functional requirements specifications define what a software system must do and how it should behave. There are several types of requirements at different levels, including business, user, and system requirements. Functional requirements describe the features and functions of a system, while non-functional requirements establish constraints like usability, security, and performance. Requirements can be documented through specifications, use cases, user stories, prototypes, and diagrams to facilitate development and ensure stakeholders agree on goals.
This document provides instructions for students to complete practical projects related to project management. It outlines 4 practical assignments:
1. Create a System Requirement Study (SRS) for a sample inventory management project using UML diagrams.
2. Use the waterfall model to prepare a flow chart and Gantt chart for a student project.
3. Estimate the cost of a project using Function Point Analysis (FPA), which involves counting types of system functions and weighing them based on complexity.
4. Estimate the cost of a project using the COCOMO model, which is a regression model that uses parameters from historical data and current project characteristics in a basic formula.
The document discusses key aspects of developing a software requirements specification (SRS) document. It notes that the SRS serves as a contract between developers and customers, detailing functional and non-functional requirements without specifying solutions. An effective SRS is unambiguous, complete, verifiable, consistent, modifiable, traceable and usable for subsequent development and maintenance phases. The document provides examples of both good and bad SRS qualities.
The document discusses software requirements engineering and defines functional requirements. It states that functional requirements describe what a system should do, including how it will react to inputs and behave in different situations. Functional requirements capture the functionality and sequencing of a system. They are important as customers and developers focus on functional requirements. Examples of functional requirements are provided such as solving equations, searching a database, and providing document viewers.
The document discusses various types of software requirements including functional requirements, non-functional requirements, interface requirements, and design and constraints requirements. It provides details on each type of requirement such as how functional requirements define the basic facilities the system should offer and how non-functional requirements relate to quality constraints. The document also covers requirement engineering processes like elicitation, analysis, specification, verification and validation, and management. Overall, the document provides an overview of different classifications of software requirements and the requirement engineering lifecycle.
1 Software Requirements Descriptions and specification.docxjeremylockett77
1
Software Requirements
Descriptions and specifications
of a system
What is a requirement?
• May range from
– a high-level abstract statement of a service
or
– a statement of a system constraint to a
detailed mathematical functional specification
• Requirements may be used for
– a bid for a contract
• must be open to interpretation
– the basis for the contract itself
• must be defined in detail
• Both the above statements may be called
requirements
Example Example
……
4.A.5 The database shall support the generation and control of
configuration objects; that is, objects which are themselves groupings
of other objects in the database. The configuration control facilities
shall allow access to the objects in a version group by the use of an
incomplete name.
……
2
Types of requirements
• Written for customers
– User requirements
• Statements in natural language plus diagrams of the
services the system provides and its operational
constraints.
• Written as a contract between client and
contractor
– System requirements
• A structured document setting out detailed
descriptions of the system services.
• Written for developers
– Software specification
• A detailed software description which can serve as a
basis for a design or implementation.
User requirements readers
• Client managers
• System end-users
• Client engineers
• Contractor managers
• System architects
System requirements readers
• System end-users
• Client engineers
• System architects
• Software developers
Software specification readers
• Client engineers (maybe)
• System architects
• Software developers
3
We will come back to user
and system requirements
Functional requirements
• Statements of services the system
should provide, how the system
should react to particular inputs
and how the system should behave
in particular situations.
Functional requirements
• Describe functionality or system services
• Depend on the type of software,
expected users and the type of system
where the software is used
• Functional user requirements may be
high-level statements of what the
system should do but functional system
requirements should describe the system
services in detail
Examples of functional
requirements
1. The user shall be able to search either
all of the initial set of databases or
select a subset from it.
2. The system shall provide appropriate
viewers for the user to read documents
in the document store.
3. Every order shall be allocated a unique
identifier (ORDER_ID) which the user
shall be able to copy to the account’s
permanent storage area.
4
Requirements imprecision
• Problems arise when requirements are
not precisely stated
• Ambiguous requirements may be
interpreted in different ways by
developers and users
• Consider the term ‘appropriate viewers’
– User intention - special purpose viewer fo ...
artificial intelligence and data science contents.pptxGauravCar
What is artificial intelligence? Artificial intelligence is the ability of a computer or computer-controlled robot to perform tasks that are commonly associated with the intellectual processes characteristic of humans, such as the ability to reason.
› ...
Artificial intelligence (AI) | Definitio
Software Engineering and Project Management - Introduction, Modeling Concepts...Prakhyath Rai
Introduction, Modeling Concepts and Class Modeling: What is Object orientation? What is OO development? OO Themes; Evidence for usefulness of OO development; OO modeling history. Modeling
as Design technique: Modeling, abstraction, The Three models. Class Modeling: Object and Class Concept, Link and associations concepts, Generalization and Inheritance, A sample class model, Navigation of class models, and UML diagrams
Building the Analysis Models: Requirement Analysis, Analysis Model Approaches, Data modeling Concepts, Object Oriented Analysis, Scenario-Based Modeling, Flow-Oriented Modeling, class Based Modeling, Creating a Behavioral Model.
Redefining brain tumor segmentation: a cutting-edge convolutional neural netw...IJECEIAES
Medical image analysis has witnessed significant advancements with deep learning techniques. In the domain of brain tumor segmentation, the ability to
precisely delineate tumor boundaries from magnetic resonance imaging (MRI)
scans holds profound implications for diagnosis. This study presents an ensemble convolutional neural network (CNN) with transfer learning, integrating
the state-of-the-art Deeplabv3+ architecture with the ResNet18 backbone. The
model is rigorously trained and evaluated, exhibiting remarkable performance
metrics, including an impressive global accuracy of 99.286%, a high-class accuracy of 82.191%, a mean intersection over union (IoU) of 79.900%, a weighted
IoU of 98.620%, and a Boundary F1 (BF) score of 83.303%. Notably, a detailed comparative analysis with existing methods showcases the superiority of
our proposed model. These findings underscore the model’s competence in precise brain tumor localization, underscoring its potential to revolutionize medical
image analysis and enhance healthcare outcomes. This research paves the way
for future exploration and optimization of advanced CNN models in medical
imaging, emphasizing addressing false positives and resource efficiency.
Optimizing Gradle Builds - Gradle DPE Tour Berlin 2024Sinan KOZAK
Sinan from the Delivery Hero mobile infrastructure engineering team shares a deep dive into performance acceleration with Gradle build cache optimizations. Sinan shares their journey into solving complex build-cache problems that affect Gradle builds. By understanding the challenges and solutions found in our journey, we aim to demonstrate the possibilities for faster builds. The case study reveals how overlapping outputs and cache misconfigurations led to significant increases in build times, especially as the project scaled up with numerous modules using Paparazzi tests. The journey from diagnosing to defeating cache issues offers invaluable lessons on maintaining cache integrity without sacrificing functionality.
CHINA’S GEO-ECONOMIC OUTREACH IN CENTRAL ASIAN COUNTRIES AND FUTURE PROSPECTjpsjournal1
The rivalry between prominent international actors for dominance over Central Asia's hydrocarbon
reserves and the ancient silk trade route, along with China's diplomatic endeavours in the area, has been
referred to as the "New Great Game." This research centres on the power struggle, considering
geopolitical, geostrategic, and geoeconomic variables. Topics including trade, political hegemony, oil
politics, and conventional and nontraditional security are all explored and explained by the researcher.
Using Mackinder's Heartland, Spykman Rimland, and Hegemonic Stability theories, examines China's role
in Central Asia. This study adheres to the empirical epistemological method and has taken care of
objectivity. This study analyze primary and secondary research documents critically to elaborate role of
china’s geo economic outreach in central Asian countries and its future prospect. China is thriving in trade,
pipeline politics, and winning states, according to this study, thanks to important instruments like the
Shanghai Cooperation Organisation and the Belt and Road Economic Initiative. According to this study,
China is seeing significant success in commerce, pipeline politics, and gaining influence on other
governments. This success may be attributed to the effective utilisation of key tools such as the Shanghai
Cooperation Organisation and the Belt and Road Economic Initiative.
Embedded machine learning-based road conditions and driving behavior monitoringIJECEIAES
Car accident rates have increased in recent years, resulting in losses in human lives, properties, and other financial costs. An embedded machine learning-based system is developed to address this critical issue. The system can monitor road conditions, detect driving patterns, and identify aggressive driving behaviors. The system is based on neural networks trained on a comprehensive dataset of driving events, driving styles, and road conditions. The system effectively detects potential risks and helps mitigate the frequency and impact of accidents. The primary goal is to ensure the safety of drivers and vehicles. Collecting data involved gathering information on three key road events: normal street and normal drive, speed bumps, circular yellow speed bumps, and three aggressive driving actions: sudden start, sudden stop, and sudden entry. The gathered data is processed and analyzed using a machine learning system designed for limited power and memory devices. The developed system resulted in 91.9% accuracy, 93.6% precision, and 92% recall. The achieved inference time on an Arduino Nano 33 BLE Sense with a 32-bit CPU running at 64 MHz is 34 ms and requires 2.6 kB peak RAM and 139.9 kB program flash memory, making it suitable for resource-constrained embedded systems.
Advanced control scheme of doubly fed induction generator for wind turbine us...IJECEIAES
This paper describes a speed control device for generating electrical energy on an electricity network based on the doubly fed induction generator (DFIG) used for wind power conversion systems. At first, a double-fed induction generator model was constructed. A control law is formulated to govern the flow of energy between the stator of a DFIG and the energy network using three types of controllers: proportional integral (PI), sliding mode controller (SMC) and second order sliding mode controller (SOSMC). Their different results in terms of power reference tracking, reaction to unexpected speed fluctuations, sensitivity to perturbations, and resilience against machine parameter alterations are compared. MATLAB/Simulink was used to conduct the simulations for the preceding study. Multiple simulations have shown very satisfying results, and the investigations demonstrate the efficacy and power-enhancing capabilities of the suggested control system.
Comparative analysis between traditional aquaponics and reconstructed aquapon...bijceesjournal
The aquaponic system of planting is a method that does not require soil usage. It is a method that only needs water, fish, lava rocks (a substitute for soil), and plants. Aquaponic systems are sustainable and environmentally friendly. Its use not only helps to plant in small spaces but also helps reduce artificial chemical use and minimizes excess water use, as aquaponics consumes 90% less water than soil-based gardening. The study applied a descriptive and experimental design to assess and compare conventional and reconstructed aquaponic methods for reproducing tomatoes. The researchers created an observation checklist to determine the significant factors of the study. The study aims to determine the significant difference between traditional aquaponics and reconstructed aquaponics systems propagating tomatoes in terms of height, weight, girth, and number of fruits. The reconstructed aquaponics system’s higher growth yield results in a much more nourished crop than the traditional aquaponics system. It is superior in its number of fruits, height, weight, and girth measurement. Moreover, the reconstructed aquaponics system is proven to eliminate all the hindrances present in the traditional aquaponics system, which are overcrowding of fish, algae growth, pest problems, contaminated water, and dead fish.
Use PyCharm for remote debugging of WSL on a Windo cf5c162d672e4e58b4dde5d797...shadow0702a
This document serves as a comprehensive step-by-step guide on how to effectively use PyCharm for remote debugging of the Windows Subsystem for Linux (WSL) on a local Windows machine. It meticulously outlines several critical steps in the process, starting with the crucial task of enabling permissions, followed by the installation and configuration of WSL.
The guide then proceeds to explain how to set up the SSH service within the WSL environment, an integral part of the process. Alongside this, it also provides detailed instructions on how to modify the inbound rules of the Windows firewall to facilitate the process, ensuring that there are no connectivity issues that could potentially hinder the debugging process.
The document further emphasizes on the importance of checking the connection between the Windows and WSL environments, providing instructions on how to ensure that the connection is optimal and ready for remote debugging.
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2. 2
Requirements Analysis and Specification
• Many projects fail: because
- developers start implementing the system
without determining what they are building
and what the customer really wants.
- Lack of user involvement
- Lack of resources
- Unrealistic expectations
- Lack of planning
3. 3
Requirements Analysis and Specification
• Goals of requirements analysis and specification phase:
– fully understand the user requirements
– Define the requirements in a manner that is clear to the
client. This may be a written specification, prototype system,
or other form of communication.
– Define the requirements in a manner that is clear to the
people who will design, implement, and maintain the
system.
– remove inconsistencies, anomalies, incompleteness from
requirements
– document requirements properly in an SRS document
4. 4
Requirements Analysis and Specification
• Consists of two distinct activities:
•Requirements Gathering and
Analysis
•Requirements Specification
5. Requirements Gathering
• It is also known as requirements elicitation.
• Requirements Gathering is very difficult task
especially
- as requirements are never available in form
of single document
- neither requirements are completely
obtainable from single customer.
- when there is no working model of the
problem.
6. 6
ROLE OF A SYSTEM ANALYST
• The person who undertakes requirements
analysis and specification:
– known as systems analyst:
– collects data pertaining to the product
– analyzes collected data:
• to understand what exactly needs to be done.
– writes the Software Requirements Specification
(SRS) document.
7. 7
Requirements Gathering (CONT.)
• Some desirable attributes of a
good system analyst:
–Good interaction skills,
–imagination and creativity,
–experience.
8. Requirements Gathering (CONT.)
• There are various ways to discover requirements
• Interviews
- Interviews are strong medium to collect requirements. Several types of
interviews such as:
- Structured (closed) interviews, Non-structured (open) interviews, Oral
interviews, Written interviews, One-to-one interviews, Group interviews
• Surveys
- Organization may conduct surveys among various customer by querying
about their expectation and requirements from the upcoming system.
• Questionnaires
- A document with pre-defined set of objective questions and respective
options is handed over to all customers to answer, which are collected and
compiled.
9. Requirements Gathering (CONT.)
• Domain Analysis
- The expert people in the domain can be a great help to analyze general
and specific requirements.
• Brainstorming
- An informal debate is held among various stakeholders and all their
inputs are recorded for further requirements analysis.
• Prototyping
- The prototype is shown to the client and the feedback is noted. The
client feedback serves as an input for requirement gathering.
• Observation
-Team of experts visit the client’s organization or workplace. They observe
the actual working of the existing installed systems.
10. 10
Requirements Analysis
• Requirements analysis involves:
–obtaining a clear, in-depth
understanding of the product to be
developed,
–to analyze the collected information
–remove all ambiguities, incompleteness
and inconsistencies by further
discussions with the end-users and the
customers.
11. 11
Requirements Analysis (CONT.)
• Several things about the project should be
clearly understood by the analyst:
– What is the problem?
– Why is it important to solve the problem?
– What are the possible solutions to the problem?
– What complexities might arise while solving the
problem?
– What exactly are the data inputs to the system and
what exactly are the data outputs by the system?
12. Requirements Analysis (CONT.)
• Three main types of problems in requirements
that analyst need to identify are:
- Ambiguity
- Inconsistency
- incompleteness
13. Ambiguity
• A requirements is anomalous when several
interpretations of that requirement is possible.
• Example: in office automation, the office clerk
mentioned that during the final grade
computation, if any student scores sufficiently
low grade in semester, then his parents should be
informed. But clerk can provide well defined
criteria what can be “sufficiently low grade”.
14. 14
Inconsistent requirement
• Some part of the requirement:
– contradicts with some other part.
• Example:
– One customer says turn off heater and open
water shower when temperature > 100 C
– Another customer says turn off heater and
turn ON cooler when temperature > 100 C
15. 15
Incomplete requirement
• Some requirements have been
overlooked.
• Example:
– In chemical plant automation software,
• One requirement is, if internal temperature exceeds
200 C, then alarm bell must be sounded.
• There is no provision for resetting the alarm bell in
any of the requirements.
16. 16
Software Requirements Specification
• Main aim of requirements
specification:
–systematically organize the
requirements arrived during
requirements analysis
–document requirements properly.
17. 17
Software Requirements Specification
• The SRS document is useful in various
contexts:
–statement of user needs
–contract document
–reference document
–definition for implementation
18. 18
Software Requirements Specification: A Contract Document
• Requirements document is a reference
document.
• SRS document is a contract between the
development team and the customer.
– Once the SRS document is approved by the
customer,
• any subsequent controversies are settled by referring
the SRS document.
19. 19
Software Requirements Specification: A Contract
Document
• Once customer agrees to the SRS document:
– development team starts to develop the product
according to the requirements recorded in the SRS
document.
• The final product will be acceptable to the
customer:
– as long as it satisfies all the requirements recorded
in the SRS document.
20. 20
SRS Document (CONT.)
• The SRS document is known as black-box
specification:
– the system is considered as a black box whose
internal details are not known.
– only its external (i.e. input/output) behaviour is
documented.
S
Input Data Output Data
21. 21
SRS Document (CONT.)
• SRS document concentrates on:
– what needs to be done
– carefully avoids the solution (“how to do”) aspects.
• The requirements at this stage:
–written using end-user terminology.
22. Categories of Users of SRS Document
(CONT.)
• Different categories of users of SRS documents are:
• Users, customers and marketing personnel
- To ensure that the system as described will meet
their needs.
• Software developers
- They are developing exactly what is required by the
customer.
• Test engineers
- The requirements are understandable from the
functionality point of view.
23. Categories of Users of SRS Document
(CONT.)
• User documentation writers
- They are able to write user manuals.
• Project managers
- They can estimate the cost of the project
easily.
• Maintenance engineers
- To determine what modifications to the
systems functionalities would be needed for a
specific purpose.
24. 24
Properties of a goodSRS document
• It should be concise
– and at the same time should not be ambiguous.
• It should specify what the system must do
– and not say how to do it.
• Easy to change.,
– i.e. it should be well-structured.
• It should be consistent.
• It should be complete.
25. 25
Properties of a goodSRS document
(cont...)
• It should be traceable
– To verify the result of the phase with previous
phase
– To analyze the impact of change.
• It should be verifiable
– To determine whether or not requirements have been met
in an implementation
– e.g. “system should be user friendly” is not verifiable
26. 26
Examples of Bad SRS Documents
• Unstructured Specifications:
– Narrative essay --- one of the worst types of
specification document:
• Difficult to change,
• difficult to be precise,
• difficult to be unambiguous,
• scope for contradictions, etc.
• Forward References:
– References to aspects of problem
• defined only later on in the text.
27. 27
Examples of Bad SRS Documents
• Overspecification:
– Addressing “how to” aspects
– For example, “Library member names should be
stored in a sorted descending order”
– Overspecification restricts the solution space for
the designer.
• Contradictions:
– Contradictions might arise
• if the same thing described at several places in different
ways.
28. Problems without a SRS document
The important problems are:
• Without developing the SRS document, the system would not be
implemented according to customer needs.
• Software developers would not know whether what they are
developing is what exactly required by the customer.
• Without SRS document, it will be very much difficult for the
maintenance engineers to understand the functionality of the
system.
• It will be very much difficult for user document writers to write the
users’ manuals properly without understanding the SRS document.
29. 29
SRS Document (CONT.)
• SRS document, normally contains
three important parts:
–functional requirements,
–Non functional requirements,
–Goal of implementation.
30. 30
SRS Document (CONT.)
• It is desirable to consider every system:
– performing a set of functions {fi}.
– Each function fi considered as:
– transforming a set of input data to
corresponding output data.
Input Data Output Data
fi
31. 31
Example: Functional Requirement
• F1: Search Book
– Input:
• an author’s name:
– Output:
• details of the author’s books and the locations of
these books in the library.
Author Name Book Details
f1
32. 32
Functional Requirements
• Functional requirements describe:
–A set of high-level functions
–A high-level function is one using
which the user can get some useful
piece of work done.
–Each high-level requirement:
• takes in some data from the user
• outputs some data to the user
33. 33
Functional Requirements
• For each high-level requirement:
–every function is described in terms of
• input data set
• output data set
• processing required to obtain the output
data set from the input data set
35. 35
Non-functional Requirements
• Non functional requirements include:
– reliability issues,
– performance issues,
– human-computer interface issues,
– Interface with other external systems,
36. Non-functional Requirements
• Example of Non-Functional requirements:
- The user interface of the software should be
useable by the factory shop floor workers who
may not have even high school degree.
37. Non-functional Requirements
• IEEE 870 standard lists four types of non-
functional requirements:
- External interface requirements
example: hardware, software, report
format, user interface
- Performance requirements
example: number of transactions completed
per unit time.
- Constraints
- Software system attributes
38. 38
Constraints
• Constraints describe things that the system
should or should not do.
– For example,
• standards compliance
• how fast the system can produce results
–so that it does not overload another
system to which it supplies data, etc.
39. 39
Examples of constraints
• Hardware to be used,
• Operating system
– or DBMS to be used
• Capabilities of I/O devices
• Standards compliance
• Data representations
– by the interfaced system
40. Goal of implementation
• It offers general suggestions regarding
development.
- Example: the developers may use these
suggestions while choosing among different
design solutions.
• A goal is not checked by the customer at the
time of acceptance testing.
41. Goal of implementation
• It document issues such as:
- Revisions to the system functionalities in the
future.
- New devices to be supported in the future.
- Reusability issues.
42. Organization of the SRS Document
42
1. Introduction to the Document
– 1.1 Purpose of the Product
– 1.2 Scope of the Product
– 1.3 Acronyms, Abbreviations, Definitions
– 1.4 References
– 1.5 Outline of the rest of the SRS
2. General Description of Product
– 2.1 Context of Product
– 2.2 Product Functions
– 2.3 User Characteristics
– 2.4 Constraints
– 2.5 Assumptions and Dependencies
43. Organization of the SRS
Document(contd)
• 3. Specific Requirements
– 3.1 External Interface Requirements
• 3.1.1 User Interfaces
• 3.1.2 Hardware Interfaces
• 3.1.3 Software Interfaces
• 3.1.4 Communications Interfaces
– 3.2 Functional Requirements
• 3.2.1 Class 1
• 3.2.2 Class 2
• …
– 3.3 Performance Requirements
– 3.4 Design Constraints
– 3.5 Quality Requirements
– 3.6 Other Requirements
• 4. Appendices
43
44. 44
Example Functional Requirements
• List all functional requirements
with proper numbering.
Search book availability in Library
• Req. 1: Search book
Once the user selects the “search” option,
• he is asked to enter the key words.
– The system should output details of all books
• whose title or author name matches any of the key
words entered.
• Details include: Title, Author Name, Publisher name,
Year of Publication, ISBN Number, Catalogue Number,
Location in the Library.
45. 45
Req. 1:
• R.1.1: Select search option
– Input: “search” option,
– Output: user prompted to enter the key words.
• R1.2: Search and display
– Input: key words
– Output: Details of all books whose title or author name
matches any of the key words.
• Details include: Title, Author Name, Publisher name, Year of
Publication, ISBN Number, Catalog Number, Location in the
Library.
– Processing: Search the book list for the keywords
46. 46
Example Functional Requirements
• Req. 2: Renew book
– When the “renew” option is selected,
• the user is asked to enter his membership number
and password.
– After password validation,
• the list of the books borrowed by him are displayed.
– The user can renew any of the books:
• by clicking in the corresponding renew box.
47. 47
Req. 2:
• R2.1: Select renew book
– Input: “renew” option selected,
– Output: user prompted to enter his
membership number and password.
• R2.2: Login
– Input: membership number and password
– Output:
• list of the books borrowed by user are displayed.
User prompted to enter books to be renewed or
• user informed about bad password
– Processing: Password validation, search books
issued to the user from borrower list and
display.
48. 48
Req. 2:
• R2.3: Renew selected books
– Input: user choice for renewal of the books issued
to him through mouse clicks in the corresponding
renew box.
– Output: Confirmation of the books renewed
– Processing: Renew the books selected by the in the
borrower list.