Modified Conditional Restricted Boltzmann Machines for Query Recommendation in Digital Archives

Author:

Wang Jiayun1ORCID,Batjargal Biligsaikhan2ORCID,Maeda Akira3ORCID,Kawagoe Kyoji3ORCID,Akama Ryo4

Affiliation:

1. Graduate School of Information Science and Engineering, Ritsumeikan University, Shiga 525-8577, Japan

2. Research Organization of Science and Technology, Ritsumeikan University, Shiga 525-8577, Japan

3. College of Information Science and Engineering, Ritsumeikan University, Shiga 525-8577, Japan

4. College of Letters, Ritsumeikan University, Kyoto 603-8577, Japan

Abstract

Digital archives (DAs) usually store diverse expert-level materials. Nowadays, access to DAs is increasing for non-expert users, However, they might have difficulties formulating appropriate search queries to find the necessary information. In response to this problem, we propose a query log-based query recommendation algorithm that provides expert knowledge to non-expert users, thus supporting their information seeking in DAs. The use case considered is one where after users enter some general queries, they will be recommended semantically similar expert-level queries in the query logs. The proposed modified conditional restricted Boltzmann machines (M-CRBMs) are capable of utilizing the rich metadata in DAs, thereby alleviating the sparsity problem that conventional restricted Boltzmann machines (RBMs) will face. Additionally, compared with other CRBM models, we drop a large number of model weights. In the experiments, the M-CRBMs outperform the conventional RBMs when using appropriate metadata, and we find that the recommendation results are relevant to the metadata fields that are used in M-CRBMs. Through experiments on the Europeana dataset, we also demonstrate the versatility and scalability of our proposed model.

Funder

JSPS KAKENHI

Publisher

MDPI AG

Subject

Fluid Flow and Transfer Processes,Computer Science Applications,Process Chemistry and Technology,General Engineering,Instrumentation,General Materials Science

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