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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Online Expansion of Rare Queries for Sponsored Search

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Presentation Transcript


Online Expansion of Rare Queries for Sponsored Search

attackChih-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…

    • Describe a ranking and scoring method…

    • Umm…..so it’s twofold??


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 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

  • 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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