online expansion of rare queries for sponsored search
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Online Expansion of Rare Queries for Sponsored Search. attack Chih -Hung Wu. Contributions. Fourfold: present an efficient online query expansion approach for tail queries describe a novel approach for directing indexing query expansions… Propose a formalism for expanding queries…

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Presentation Transcript
contributions
Contributions
  • Fourfold:
    • present an efficient online query expansion approach for tail queries
    • describe a novel approach for directing indexing query expansions…
    • Propose a formalism for expanding queries…
    • Describe a ranking and scoring method…
    • Umm…..so it’s twofold??
empirical evaluation
Empirical evaluation
  • Comparisons with other algorithms missing??
  • Set unigram, phrase, and class feature weights, to 1,1,and 0.1.
    • Because it was ‘found’ to produce good results…??
empirical evaluation1
Empirical evaluation
  • Ad relevance
    • Human editors
  • Hybrid
    • Offline for queries found in LUT, online for ones not found in LUT.
    • Where is the analysis on computational cost??
  • Table6.4??
overview
Overview
  • 7 people on the team
    • Wrote an incomplete paper
      • Small dataset
        • Google 61.60%
        • Yahoo 20.40%
      • Lack of explanations on certain points/decisions
        • control variables
      • Missing cost/timing analysis
      • What is the whole point of this paper?
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