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Shotaro Akaho

 

Publications by Shotaro Akaho (bibliography)

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2010
 
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Kamishima, Toshihiro and Akaho, Shotaro (2010): Nantonac collaborative filtering: a model-based approach. In: Proceedings of the 2010 ACM Conference on Recommender Systems 2010. pp. 273-276. Available online

A recommender system has to collect users' preference data. To collect such data, rating or scoring methods that use rating scales, such as good-fair-poor or a five-point-scale, have been employed. We replaced such collection methods with a ranking method, in which objects are sorted according to the degree of a user's preference. We developed a technique to convert the rankings to scores based on order statistics theory. This technique successfully improved the accuracy of ranking recommended items. However, we targeted only memory-based recommendation algorithms. To test whether or not the use of ranking methods and our conversion technique are effective for wide variety of recommenders, we apply our conversion technique to model-based algorithms.

© All rights reserved Kamishima and Akaho and/or ACM Press

2007
 
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Gczy, Peter, Izumi, Noriaki, Akaho, Shotaro and Hasida, Kiti (2007): Complex User Behavioral Networks at Enterprise Information Systems. In: Cordeiro, Jos and Filipe, Joaquim (eds.) ICEIS 2008 - Proceedings of the Tenth International Conference on Enterprise Information Systems Volume HCI June 12-16, 2007, Barcelona, Spain. pp. 233-239.

 
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