Trinity Model provides a holistic view for internet business.

1. Trinity Model Jinsoo Kim Representative Director of Yahoo! Korea Ph.D. in Human-Computer Interaction M.D./ B.A. in Education B.S. in Electrical Engineering

2. Human-Computer Interaction Reference: Human-Computer Interaction by Alan Dix, et al C H O I output input articulation observation performance presentation interface GOAL

3. How to satisfy massive users Personalization Common characteristic of Human (Information processing mechanism) Behavior, preference (segmentation) Goal (Persona)

6. Microscopic View (EE Model) The manner in which humans interact with systems by Don Norman

7. Human-Computer Interaction GOAL C H O I output input execution evaluation performance presentation world

8. Trinity Model (TM) B Computer Mediated Interactive Product By Jinsoo Kim Business Interface Human Needs Behavior Acceptance Traffic Concept Cont/ID/VD/Eng Project Management Biz Model P & L Efficiency NPV Product

10. Relation (H, B, P) By Jinsoo Kim Make Money Profit Loss Cost Benefit Achieve Goal Medium Value Resource Business Human Interface Product

11. Strategy (H, B, P) Profitable More Benefit Unique Differentiated By Jinsoo Kim Interface Business Human Product

12. Objective setting Viability checking Resource Managing Concept forming Scope outlining Project Managing Needs capturing Requirements gathering Acceptance testing Process (H,B,P) Interface Product Human Business 1. Ideation 2. Market Exploration 3. Execution By Jinsoo Kim

13. Quality (H,B,P) Interface Product Human Business What to focus Return on investment Compare with other competitors Resource Allocation Useful Usable Desirable Stable Decision Making User Experience Content Interaction Design Visual Design FE/BE coding Product Quality By Jinsoo Kim

15. Research framework Quality of visual design How visual design reflects product concept Visual design Coverage of content System response time Front and Back end code Broken link or error Readability User interface Consistency Learnability Negative items to product quality such as pop-up ads Freshness of content Relevance of content (information and function) Content attributes Factors

17. <Y! KR Research data > Dam model: Law of minimum

18. TM including Marketing Interface Product Human Business Marketing External trigger point to prompt the interaction

19. Thank You!