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Online Expansion of Rare Queries for Sponsored Search

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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  1. Online Expansion of Rare Queries for Sponsored Search attackChih-Hung Wu

  2. 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??

  3. 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…??

  4. 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??

  5. 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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