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Listwise Learning to Rank from Crowds
Wu, Ou1; You, Qiang1; Xia, Fen2; Ma, Lei1; Hu, Weiming3,4
Abstract11; Learning to rank has received great attention in recent years as it plays a crucial role in many applications such as information retrieval and data mining. The existing concept of learning to rank assumes that each training instance is associated with a reliable label. However, in practice, this assumption does not necessarily hold true as it may be infeasible or remarkably expensive to obtain reliable labels for many learning to rank applications. Therefore, a feasible approach is to collect labels from crowds and then learn a ranking function from crowdsourcing labels. This study explores the listwise learning to rank with crowdsourcing labels obtained from multiple annotators, who may be unreliable. A new probabilistic ranking model is first proposed by combining two existing models. Subsequently, a ranking function is trained by proposing a maximum likelihood learning approach, which estimates ground-truth labels and annotator expertise, and trains the ranking function iteratively. In practical crowdsourcing machine learning, valuable side information (e.g., professional grades) about involved annotators is normally attainable. Therefore, this study also investigates learning to rank from crowd labels when side information on the expertise of involved annotators is available. In particular, three basic types of side information are investigated, and corresponding learning algorithms are consequently introduced. Further, the top-k learning to rank from crowdsourcing labels are explored to deal with long training ranking lists. The proposed algorithms are tested on both synthetic and real-world data. Results reveal that the maximum likelihood estimation approach significantly outperforms the average approach and existing crowdsourcing regression methods. The performances of the proposed algorithms are comparable to those of the learning model in consideration reliable labels. The results of the investigation further indicate that side information is helpful in inferring both ranking functions and expertise degrees of annotators.
KeywordListwise Learning To Rank Crowdsourcing Multiple Annotators Probabilistic Ranking Model Side Information
WOS HeadingsScience & Technology ; Technology
Indexed BySCI
Funding OrganizationNational Science Foundation of China (NSFC)(61379098)
WOS Research AreaComputer Science
WOS SubjectComputer Science, Information Systems ; Computer Science, Software Engineering
WOS IDWOS:000382878300004
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Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Corresponding AuthorWu, Ou
Affiliation1.Chinese Acad Sci, Natl Lab Pattern Recognit, Inst Automat, 95 Zhongguancun East, Beijing, Peoples R China
2.Baidu Inc, Big Data Lab, 10 Shangdi 10th St, Beijing, Peoples R China
3.CAS Ctr Excellence Brain Sci & Intelligence Techn, 95 Zhongguancun East, Beijing, Peoples R China
4.Chinese Acad Sci, Inst Automat, NLPR, 95 Zhongguancun East, Beijing, Peoples R China
Recommended Citation
GB/T 7714
Wu, Ou,You, Qiang,Xia, Fen,et al. Listwise Learning to Rank from Crowds[J]. ACM TRANSACTIONS ON KNOWLEDGE DISCOVERY FROM DATA,2016,11(1):1-39.
APA Wu, Ou,You, Qiang,Xia, Fen,Ma, Lei,&Hu, Weiming.(2016).Listwise Learning to Rank from Crowds.ACM TRANSACTIONS ON KNOWLEDGE DISCOVERY FROM DATA,11(1),1-39.
MLA Wu, Ou,et al."Listwise Learning to Rank from Crowds".ACM TRANSACTIONS ON KNOWLEDGE DISCOVERY FROM DATA 11.1(2016):1-39.
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