Unifying learning to rank and domain adaptation: Enabling cross-task document scoring

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

For document scoring, although learning to rank and domain adaptation are treated as two different problems in previous works, we discover that they actually share the same challenge of adapting keyword contribution across different queries or domains. In this paper, we propose to study the cross-task document scoring problem, where a task refers to a query to rank or a domain to adapt to, as the first attempt to unify these two problems. Existing solutions for learning to rank and domain adaptation either leave the heavy burden of adapting keyword contribution to feature designers, or are difficult to be generalized. To resolve such limitations, we abstract the keyword scoring principle, pointing out that the contribution of a keyword essentially depends on, first, its importance to a task and, second, its importance to the document. For determining these two aspects of keyword importance, we further propose the concept of feature decoupling, suggesting using two types of easy-to-design features: meta-features and intra-features. Towards learning a scorer based on the decoupled features, we require that our framework fulfill inferred sparsity to eliminate the interference of noisy keywords, and employ distant supervision to tackle the lack of keyword labels. We propose the Tree-structured Boltzmann Machine (T-RBM), a novel two-stage Markov Network, as our solution. Experiments on three different applications confirm the effectiveness of T-RBM, which achieves significant improvement compared with four state-of-the-art baseline methods.

Original languageEnglish (US)
Title of host publicationKDD 2014 - Proceedings of the 20th ACM SIGKDD International Conference on Knowledge Discovery and Data Mining
PublisherAssociation for Computing Machinery
Pages781-790
Number of pages10
ISBN (Print)9781450329569
DOIs
StatePublished - Jan 1 2014
Event20th ACM SIGKDD International Conference on Knowledge Discovery and Data Mining, KDD 2014 - New York, NY, United States
Duration: Aug 24 2014Aug 27 2014

Publication series

NameProceedings of the ACM SIGKDD International Conference on Knowledge Discovery and Data Mining

Other

Other20th ACM SIGKDD International Conference on Knowledge Discovery and Data Mining, KDD 2014
CountryUnited States
CityNew York, NY
Period8/24/148/27/14

Keywords

  • domain adaptation
  • feature decoupling
  • learning to rank
  • tree-structured restricted boltzmann machine

ASJC Scopus subject areas

  • Software
  • Information Systems

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  • Cite this

    Zhou, M., & Chang, K. C-C. (2014). Unifying learning to rank and domain adaptation: Enabling cross-task document scoring. In KDD 2014 - Proceedings of the 20th ACM SIGKDD International Conference on Knowledge Discovery and Data Mining (pp. 781-790). (Proceedings of the ACM SIGKDD International Conference on Knowledge Discovery and Data Mining). Association for Computing Machinery. https://doi.org/10.1145/2623330.2623739