Hybrid Approach for a Knowledge Recommender Service:  A Combination of Item-Based and Tag-Based Recommendation

Winyu NIRANATLAMPHONG; Worasit CHOOCHAIWATTANA

Authors

Winyu NIRANATLAMPHONG Department of Interactive Design and Game Development, College of Creative Design and Entertainment Technology, Dhurakij Pundit University, Bangkok 10210
Worasit CHOOCHAIWATTANA Department of Web Engineering and Mobile Application Development, College of Creative Design and Entertainment Technology, Dhurakij Pundit University, Bangkok 10210

Keywords:

Collaborative filtering, content-based filtering, item-based recommendation, tag-based recommendation, knowledge recommender service

Abstract

An exponentially increasing of knowledge in a knowledge management system is the main cause of the knowledge overload problem. A development of knowledge recommender service embedded in the knowledge management system becomes a challenging task. This paper proposed a hybrid approach by combining an item-based recommendation technique, also known as a collaborative filtering technique, with a tag-based recommendation technique, also known as a content-based filtering technique. To evaluate the performance of the proposed hybrid approach, a group of knowledge management system users were invited to be participants in this research study. As a criterion, the participants were asked to use the prototype of a knowledge management system embedded with the knowledge recommender service for 6 months. This would guarantee that each participant’s interaction with knowledge items could be recorded. A confusion matrix was then used to compute an accuracy of the proposed hybrid approach. The result of the experiment revealed that the proposed hybrid approach outperformed the item-based approach and the tag-based approach. Hence, the proposed hybrid approach was a promising technique for a knowledge recommender service in the knowledge management system.

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Author Biography

Winyu NIRANATLAMPHONG, Department of Interactive Design and Game Development, College of Creative Design and Entertainment Technology, Dhurakij Pundit University, Bangkok 10210

Department of Interactive Design and Game Development

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