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Teaching Machines to Fish -- How eBay Improves Itself

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Randy Shoup
Randy Shoup

eBay Distinguished Architect Randy Shoup describes eBay's use of machine learning and classification techniques to continually improve the quality of its search results and its overall site experience

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Teaching Machines to Fish How eBay Improves Itself Randy Shoup eBay Distinguished Architect QCon San Francisco November 21, 2008
About the Presenter ,[object Object]
Teaching Our Machines to Fish … ,[object Object],[object Object],[object Object]
… in eBay’s Internet-Scale Ocean ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Typical Problems ,[object Object],[object Object],[object Object],[object Object],[object Object]
Agenda ,[object Object],[object Object],[object Object],[object Object]
Agenda ,[object Object],[object Object],[object Object],[object Object]
Why Machine Learning? ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Machine Learning in Practice ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Machine Learning in Practice ,[object Object],[object Object],[object Object],[object Object],[object Object]
Machine Learning and Feedback Loops ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Agenda ,[object Object],[object Object],[object Object],[object Object]
eBay Feedback Loop: Data Collection ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
eBay Feedback Loop: Analysis ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
eBay Feedback Loop: Deployment ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Agenda ,[object Object],[object Object],[object Object],[object Object]
Search Challenges at eBay ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
eBay’s Search Infrastructure ,[object Object],[object Object],[object Object],[object Object],[object Object]
Search Grid ,[object Object],[object Object],[object Object],[object Object]
Feeder Pipeline ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Feeder Pipeline: Feedback Loops ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Query Augmentation and Recommendation ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Query Augmentation: Feedback Loops ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Inventory Selection ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Score = ω i1..in {Query Factors} + ω j1..jn {Item Factors} + ω k1…kn {Seller Factors} Query Factors reward relevance and item attributes positively correlated with buying activity Item factors can include price, shipping cost, terms of sale, format, etc. Seller factors can include buyer satisfaction metrics, trust, etc.
Inventory Selection: Feedback Loops ,[object Object],[object Object],[object Object],[object Object],Score = ω i1..in {Query Factors} + ω j1..jn {Item Factors} + ω k1…kn {Seller Factors} Query Factors reward relevance and item attributes positively correlated with buying activity Item factors can include price, shipping cost, terms of sale, format, etc. Seller factors can include buyer satisfaction metrics, trust, etc.
Adaptive Finding Experience ,[object Object],[object Object],[object Object]
Adaptive Finding Experience ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Agenda ,[object Object],[object Object],[object Object],[object Object]
Machine Learning Can Empower the Community ,[object Object],[object Object]
Questions? ,[object Object],[object Object]

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Teaching Machines to Fish -- How eBay Improves Itself

  • 1. Teaching Machines to Fish How eBay Improves Itself Randy Shoup eBay Distinguished Architect QCon San Francisco November 21, 2008
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