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A deep learning approach for predicting the quality of online health expert question-answering services.

Abstract：

:Recently, online health expert question-answering (HQA) services (systems) have attracted more and more health consumers to ask health-related questions everywhere at any time due to the convenience and effectiveness. However, the quality of answers in existing HQA systems varies in different situations. It is significant to provide effective tools to automatically determine the quality of the answers. Two main characteristics in HQA systems raise the difficulties of classification: (1) physicians' answers in an HQA system are usually written in short text, which yields the data sparsity issue; (2) HQA systems apply the quality control mechanism, which refrains the wisdom of crowd. The important information, such as the best answer and the number of users' votes, is missing. To tackle these issues, we prepare the first HQA research data set labeled by three medical experts in 90days and formulate the problem of predicting the quality of answers in the system as a classification task. We not only incorporate the standard textual feature of answers, but also introduce a set of unique non-textual features, i.e., the popular used surface linguistic features and the novel social features, from other modalities. A multimodal deep belief network (DBN)-based learning framework is then proposed to learn the high-level hidden semantic representations of answers from both textual features and non-textual features while the learned joint representation is fed into popular classifiers to determine the quality of answers. Finally, we conduct extensive experiments to demonstrate the effectiveness of including the non-textual features and the proposed multimodal deep learning framework.

journal_name

J Biomed Inform

journal_title

Journal of biomedical informatics

authors

Hu Z,Zhang Z,Yang H,Chen Q,Zuo D

doi

10.1016/j.jbi.2017.06.012

subject

Has Abstract

pub_date

2017-07-01 00:00:00

pages

241-253

eissn

1532-0464

issn

1532-0480

pii

S1532-0464(17)30135-1

journal_volume

71

pub_type

杂志文章

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