Towards Sustainable Society on Ubiquitous Networks

Towards Sustainable Society on Ubiquitous Networks

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The massive growth of the Internet has made an enormous amount of infor- tion available to us. However, it is becoming very difficult for users to acquire an - plicable one. Therefore, some techniques such as information filtering have been - troduced to address this issue. Recommender systems filter information that is useful to a user from a large amount of information. Many e-commerce sites use rec- mender systems to filter specific information that users want out of an overload of - formation [2]. For example, Amazon. com is a good example of the success of - commender systems [1]. Over the past several years, a considerable amount of research has been conducted on recommendation systems. In general, the usefulness of the recommendation is measured based on its accuracy [3]. Although a high - commendation accuracy can indicate a user's favorite items, there is a fault in that - ly similar items will be recommended. Several studies have reported that users might not be satisfied with a recommendation even though it exhibits high recommendation accuracy [4]. For this reason, we consider that a recommendation having only accuracy is - satisfactory. The serendipity of a recommendation is an important element when c- sidering a user's long-term profits. A recommendation that brings serendipity to users would solve the problem of a€œuser wearinessa€ and would lead to exploitation of users' tastes. The viewpoint of the diversity of the recommendation as well as its accuracy should be required for future recommender systems.Temporary ID is the unique identification of user used in the communication between authentication center, regional portal site and service providers. ... When user A wants to get services provided by site A and B, the user accesses to regional portal site and put in log-in ID (123) and ... The temporary ID of site A ( aaa) is sent to site A, and authentication interaction function of site A connects the temporaryanbsp;...


Title:Towards Sustainable Society on Ubiquitous Networks
Author: Makoto Oya, Ryuya Uda, Chizuko Yasunobu
Publisher:Springer - 2008-08-15
ISBN-13:

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