Microsoft Research Asia at the Web Track of TREC 2009

Abstract

In TREC 2009, we participate in the Web track, and focus on the diversity task. We propose to diversify web search results by first mining subtopics, and then rank results based on mined subtopics. We propose a model to diversify search results by considering both relevance of documents and richness of mined subtopics. Our experimental results show that the model improves diversity of search results in terms of NDCG, and combining subtopics from multiple data sources helps further improve result diversity.

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Document Details

Document Type
Technical Report
Publication Date
Nov 01, 2009
Accession Number
ADA517765

Entities

People

  • Ji-Rong Wen
  • Kun Chen
  • Ruihua Song
  • Shuming Shi
  • Yunxiao Ma
  • Zhicheng Dou

Organizations

  • Microsoft Research Asia

Tags

DTIC Thesaurus Topics

  • Abstracts
  • Algorithms
  • Clustering
  • Dictionaries
  • Electronic Mail
  • Equations
  • Information Operations
  • Instructions
  • Judgment
  • Platforms
  • Standards
  • Statistics
  • Test And Evaluation
  • Websites

Fields of Study

  • Computer science

Readers

  • Astronomy/Astrophysics
  • Database Systems and Applications
  • Neural Network Machine Learning.