A Quick Tutorial on Mahout’s Recommendation Engine (v 0.4)

A QUICK TUTORIAL ON MAHOUT’S RECOMMENDATION ENGINE (V 0.4) Jee Vang, Ph.D. [email_address] A Quick Tutorial on Mahout's Recommendation Engine is licensed under a Creative Commons Attribution 3.0 Unported License. Slide Version 3.1

What is recommendation? ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],A Quick Tutorial on Mahout's Recommendation Engine is licensed under a Creative Commons Attribution 3.0 Unported License.

What is Mahout? ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],A Quick Tutorial on Mahout's Recommendation Engine is licensed under a Creative Commons Attribution 3.0 Unported License.

How does Mahout’s Recommendation Engine Work? X = S U R ,[object Object],[object Object],[object Object],A Quick Tutorial on Mahout's Recommendation Engine is licensed under a Creative Commons Attribution 3.0 Unported License.

What is the similarity matrix, S? ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],S Item 1 Item 1 Item 2 Item 3 Item 4 Item 5 Item 6 Item 7 Item 2 Item 3 Item 4 Item 5 Item 6 Item 7 A Quick Tutorial on Mahout's Recommendation Engine is licensed under a Creative Commons Attribution 3.0 Unported License.

What is the user’s preferences, U? ,[object Object],[object Object],[object Object],[object Object],U Item 1 Item 2 Item 3 Item 4 Item 5 Item 6 Item 7 A Quick Tutorial on Mahout's Recommendation Engine is licensed under a Creative Commons Attribution 3.0 Unported License.

What is the recommendation, R? ,[object Object],[object Object],[object Object],[object Object],[object Object],R Item 1 Item 2 Item 3 Item 4 Item 5 Item 6 Item 7 A Quick Tutorial on Mahout's Recommendation Engine is licensed under a Creative Commons Attribution 3.0 Unported License.

What data format does Mahout’s recommendation engine expects? ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Format 1 123,345 123,456 123,789 … 789,458 Format 2 123,345,1.0 123,456,2.2 123,789,3.4 … 789,458,1.2 A Quick Tutorial on Mahout's Recommendation Engine is licensed under a Creative Commons Attribution 3.0 Unported License.

How do you run Mahout’s recommendation engine? ,[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],[object Object],[object Object],A Quick Tutorial on Mahout's Recommendation Engine is licensed under a Creative Commons Attribution 3.0 Unported License.

What are the mechanics of Mahout’s recommendation engine? ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],A Quick Tutorial on Mahout's Recommendation Engine is licensed under a Creative Commons Attribution 3.0 Unported License.

Mahout’s Recommender Engine: Phase 1, Generate List of ItemIDs ,[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],A Quick Tutorial on Mahout's Recommendation Engine is licensed under a Creative Commons Attribution 3.0 Unported License.

Mahout’s Recommender Engine: Phase 2, Create Preference Vector ,[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],A Quick Tutorial on Mahout's Recommendation Engine is licensed under a Creative Commons Attribution 3.0 Unported License.

Mahout’s Recommender Engine: Phase 3, Count Unique Users ,[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],A Quick Tutorial on Mahout's Recommendation Engine is licensed under a Creative Commons Attribution 3.0 Unported License.

Mahout’s Recommender Engine: Phase 4, Transpose Preferences Vectors ,[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],[object Object],[object Object],[object Object],A Quick Tutorial on Mahout's Recommendation Engine is licensed under a Creative Commons Attribution 3.0 Unported License.

Mahout’s Recommender Engine: Phase 5.1, RowSimilarityJob, Compute Weights ,[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],A Quick Tutorial on Mahout's Recommendation Engine is licensed under a Creative Commons Attribution 3.0 Unported License.

Mahout’s Recommender Engine: Phase 5.2, RowSimilarityJob, Compute Similarities ,[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],A Quick Tutorial on Mahout's Recommendation Engine is licensed under a Creative Commons Attribution 3.0 Unported License.

Mahout’s Recommender Engine: Phase 5.3, RowSimilarityJob, Similarity Matrix ,[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],[object Object],[object Object],A Quick Tutorial on Mahout's Recommendation Engine is licensed under a Creative Commons Attribution 3.0 Unported License.

Mahout’s Recommender Engine: Phase 6, Pre-partial multiply, Similarity Matrix ,[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],A Quick Tutorial on Mahout's Recommendation Engine is licensed under a Creative Commons Attribution 3.0 Unported License.

Mahout’s Recommender Engine: Phase 7, Pre-partial multiply, Preferences ,[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],A Quick Tutorial on Mahout's Recommendation Engine is licensed under a Creative Commons Attribution 3.0 Unported License.

Mahout’s Recommender Engine: Phase 8, Partial Multiply ,[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],A Quick Tutorial on Mahout's Recommendation Engine is licensed under a Creative Commons Attribution 3.0 Unported License.

Mahout’s Recommender Engine: Phase 9, Filters Items ,[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],A Quick Tutorial on Mahout's Recommendation Engine is licensed under a Creative Commons Attribution 3.0 Unported License.

Mahout’s Recommender Engine: Phase 10, Aggregate and Recommend ,[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],A Quick Tutorial on Mahout's Recommendation Engine is licensed under a Creative Commons Attribution 3.0 Unported License.

Summary and Conclusion ,[object Object],[object Object],[object Object],A Quick Tutorial on Mahout's Recommendation Engine is licensed under a Creative Commons Attribution 3.0 Unported License.

References ,[object Object],[object Object],[object Object],[object Object],A Quick Tutorial on Mahout's Recommendation Engine is licensed under a Creative Commons Attribution 3.0 Unported License.

A Quick Tutorial on Mahout’s Recommendation Engine (v 0.4)

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