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IR 670 Youtube Search Optimization

IR 670 Youtube Search Optimization. Spring 2010 - Prof. Caverlee Spencer Huang, Jue Yi, Chia -Chun Lin,. Youtube Search Problem.

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IR 670 Youtube Search Optimization

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  1. IR 670 Youtube Search Optimization Spring 2010 - Prof. Caverlee Spencer Huang, Jue Yi, Chia-Chun Lin,

  2. Youtube Search Problem • When performing a Youtube search, regardless login or not, does not take a Youtube user’s preference into consideration (apply to Google video search also). • Even if there is such a tool, no idea what’s in the box.

  3. Notations • UserEntity(u) - (t in u.fav) + (t in u.upload) + (t in u.subcrption u’) u’, where u’ are terms in u’.fav and u’.upload; u could have multiple u’(s) that u subscribes to. • VideoEntity(v) - (t in v.title) + (t in v.description) + (t in v.category) + (t in v.tag) • User would input Youtube Id and query (at least), which would enable the generation of above entities.

  4. Approach and Feature • Reorder via Vector-Space with stop words and with result retaining • Support features from original Youtube/Google video search. • Add New features such as by author and able/disable restrict content. Crawl UserEntity from Youtube Id and VideoEntity of query Stop words removal, construct tf-idf for U and V, cache U for re-use Cosine-Similarity and reorder Display optimized result

  5. Results • Interface • Ex: Say I have 2 favorite videos for Youtube Id….

  6. Results (cont.)

  7. Evaluation and Analysis

  8. Evaluation and Analysis (cont.)

  9. Problems encountered • Youtube caps quota for deployed GAE, too much requests to Youtube. Works for local GAE. • Needs stop words. • Optimization is directly related to the activities of a Youtube Id.

  10. Possible To do Features and QA • Support for Asian languages • Interface for feature descriptor: No need of Youtube account. • Try it out: http://irytso.appspot.com/ End

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