Main Page Sitemap

Most viewed

I was a small, timid, wimpy kid in the middle school; when most of other boys had hit puberty, I was the runt of the litter...
Read more
Pure Math., 21, Tokyo: Kinokuniya,. . Chorley, Lancashire, Tate was the son. Sir Henry Tate, 1st Baronet ( 5 December 1899) was. The Making of a..
Read more

Chengxiang zhai thesis


chengxiang zhai thesis

relevant 1 k k1 Maximal Diverse Relevance (MDR) Aspect Coverage Distrib. 6 6 More Than Relevance Relevance Ranking Desired Ranking Redundancy Readability 7 7 Meeting the Challenges Bayesian Decision Theory Statistical Language Models Risk Minimization Framework Utility-based Retrieval Parameter Estimation 8 8 Map of Thesis Risk Minimization Framework Two-stage Language Model Automatic parameter setting KL-divergence Retrieval. John Lafferty at, lTI, SCS, Carnegie Mellon University. (D) - How should these docs be presented to the user? 20 20 Estimating using Mixture Model query. Evaluation Measures Aspect Coverage (AC measures per-doc coverage #distinct-aspects docs Equivalent to the set cover problem, NP-hard Aspect Uniqueness(AU measures redundancy #distinct-aspects aspects Equivalent to the volume cover problem, NP-hard Examples. D1d1 d3d3 d2d2 #doc 1 2 3 #asp 2 5 8 #uniq-asp 2 4 5 AC: 2/12.0 4/22.0 5/31.67 AU: 2/21.0 4/50.8 5/80.625 Accumulated counts 33 33 Loss Function L( k1 1 k ) d1d1 dkdk?

chengxiang zhai thesis

I am now with the, university of Illinois at Urbana-Champaign. Example Aspects: A 1 : spot-welding robotics A 2 : controlling inventory A 3 : pipe-laying robots A 4 : talking robot A 5 : robots for loading unloading memory tapes A 6 : robot telephone operators A 7 : robot cranes Aspect judgments. I graduated in July 2002. ( ) Choose: (D, ) Query Ranked list? A k d. Simple LM 30 30 Where Are We? Presentation on theme: "1 Risk Minimization and Language Modeling in Text Retrieval ChengXiang Zhai Thesis Committee: John Lafferty (Chair Jamie Callan Jaime Carbonell David." Presentation transcript: 1 1 Risk Minimization and Language Modeling in Text Retrieval ChengXiang Zhai Thesis Committee: John Lafferty (Chair Jamie Callan. Download ppt "1 Risk Minimization and Language Modeling in Text Retrieval ChengXiang Zhai Thesis Committee: John Lafferty (Chair Jamie Callan Jaime Carbonell David."). D k 1 0.


Sitemap