1 Raghu Ramakrishnan Research Fellow Chief Scientist, Audience and Cloud Computing Yahoo! Purple Clouds:

2 Research Projects ( in Audience Science and Y! Research) Content optimization (AS, Y!R) Cloud Computing (Y!R) –Hadoop, Pig, Sherpa Information extraction (Y!R) Mail spam (AS, Y!R)) Search & Advertising (Y!R) Today’s talks Lots more going on!

3 Yahoo! Home Page Featured Box It has four tabs: Featured, Entertainment, Sports, and Video Online Models for Content Optimization (NIPS 2008) D. Agarwal, B. Chen, P. Elango, N. Motgi, S. Park, R. Ramakrishnan, S. Roy, J. Zachariah

4 Novel Aspects Classical: Arms assumed fixed over time –We gain and lose arms over time Some theoretical work by Whittle in 80’s; operations research Classical: Serving rule updated after each pull –We compute optimal design in batch mode Classical: Generally. CTR assumed stationary –We have highly dynamic, non-stationary CTRs

5 Comparing buckets

6 Audience—Research Collaboration Yahoo! Research Deepak Agarwal Bee-Chung Chen Wei Chu Pradheep Elango Raghu Ramakrishnan Seung-Taek Park Audience Engineering Todd Beaupre Kenneth Fox Nitin Motgi Scott Roy Joe Zachariah

7 babycenter epicurious Search Results of the Future yelp.com answers.com LinkedIn webmd Gawker New York Times

8 DBLife  Integrated information about a (focused) real- world community  Collaboratively built and maintained by the community  CIMple software package

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10 Opening Up Yahoo! Search Phase 1 Phase 2 Giving site owners and developers control over the appearance of Yahoo! Search results. BOSS takes Yahoo!’s open strategy to the next level by providing Yahoo! Search infrastructure and technology to developers and companies to help them build their own search experiences.

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