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In Web-based CSCW (Computer-Supported Cooperative Work), remote members communicate their intentions in cyberspace. However, different from face-to-face communication, partners' situations including their interest, concentration, boredom, and tiredness cannot be easily transmitted. Oversight and mishearing of remote partners is often overlooked. Besides, it is further difficult to understand their...
Due to the geographical distribution, different cognitive capacity, and different domain competency of workers or learners, many misunderstandings can occur during distributed remote collaboration, leading to inefficient discussions and undesired results. To make remote collaboration more efficient and dependable, enriching cyberspace through adaptively utilizing is proposed and evaluated. This assesses...
In online business, it is important to construct sale web pages offering attractive services for popular products in order to improve page access and purchase rates. Moreover, online shop owners are required to hold various types of sales frequently throughout the year to keep customers coming back. However, along with these web pages, management of product DB (Data Base) is required to set up complicated...
As an approach to search /retrieve such objects as pictures, music, perfumes and apparels on the Internet, sensitivity-vectors or kansei-vectors are useful since textual keywords are not sufficient to find objects that users want. The sensitivity-vector is an array of values each indicates a degree of feeling or impression represented as sensitivity word or kansei word. However, due to the gap between...
Remote collaboration has many benefits; however, due to the geographical distribution of learners, many misunderstandings can occur during interaction. For example, learners may miss the context of the discussion or do not hear parts of it, leading to inefficient discussions. In this paper, we propose an ldquoEnriched Cyberspacerdquo approach for dependable web based computer supported collaborative...
Due to the development of sensing technologies, sensor stream processing systems have been getting great attention. Sensor stream processing systems enable us to recognize the state of objects. For example, attach an acceleration sensor to a man and the system beforehand stores sample sensor data for the manpsilas walking and standing states. By comparing the current data stream with the stored sample...
Search engines including Yahoo! and Google utilize a keyword auction for ranking the advertisements displayed around the search results. In existing keyword auctions called the GSP, the number of displayed advertisements (slots) is determined in advance. Therefore, we consider adjusting the number of advertisements dynamically based on bids in order to improve both social surplus and seller's revenue...
We develop strategy/false-name-proof multi-unit auction protocols for non-quasi-linear utilities. One almost universal assumption in auction theory literature is that each bidder has quasi-linear utility. However, in practice, a bidder might have some kind of financial condition including budget constraints. The Vickrey-Clarke-Groves (VCG) protocol is designed to be truthful under the quasi-linear...
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