Document (#38668)

Author

Lai, C,-H.

Title

Applying knowledge flow mining to group recommendation methods for task-based groups

Source

Journal of the Association for Information Science and Technology. 66(2015) no.3, S.545-563

Year

2015

Abstract

In a knowledge-intensive environment, a task in an organization is typically performed by a group of people who have task-related knowledge and expertise. Each group may require task-related knowledge of different topic domains and documents to accomplish its tasks. Document recommendation methods are very useful to resolve the information overload problem and proactively support knowledge workers in the performance of tasks by recommending appropriate documents to meet their information needs. A worker's document referencing behavior can be modeled as a knowledge flow (KF) to represent the evolution of his information needs over time. However, the information needs of workers and groups may change over time, so that modeling the knowledge referencing behavior of a group of workers is difficult. Additionally, most traditional recommendation methods which provide personalized recommendations do not consider workers' KFs, or the information needs of the majority of workers in a group to recommend task knowledge. In this work, I integrate the KF mining method and propose group-based recommendation methods, including group-based collaborative filtering (GCF) and group content-based filtering (GCBF), to actively provide task-related documents for groups. Experimental results show that the proposed methods have better performance than the personalized recommendation methods in recommending the needed documents for groups. Thus, the recommended documents can fulfill the groups' task needs and facilitate knowledge sharing among groups.

Content

Vgl.: http://onlinelibrary.wiley.com/doi/10.1002/asi.23185/abstract.

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1. Liu, D.-R.; Lai, C.-H.; Chen, Y.-T.: Document recommendations based on knowledge flows : a hybrid of personalized and group-based approaches (2012) 2.01

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4. Sappelli, M.; Verberne, S.; Kraaij, W.: Evaluation of context-aware recommendation systems for information re-finding (2017) 0.29

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5. Zhang, Y.; Broussard, R.; Ke, W.; Gong, X.: Evaluation of a scatter/gather interface for supporting distinct health information search tasks (2014) 0.27

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