By An Liu, Yoshiharu Ishikawa, Tieyun Qian, Sarana Nutanong, Muhammad Aamir Cheema
DASFAA is an annual overseas database convention, positioned within the Asia-Pacific region,which express circumstances cutting-edge R & D actions in databases-terms and their purposes. It offers a discussion board for technical shows and discussions between database researchers, builders and clients from academia, enterprise and undefined. DASFAA 2015 the 20 th within the sequence, was once held in the course of April 20-23, 2015 in Hanoi, Vietnam. during this yr, we conscientiously chosen workshops, each one targeting particular learn concerns that give a contribution to the most subject matters of the DASFAA convention. This quantity includes the ultimate types of papers permitted for the 2 workshops: moment overseas Workshop on Semantic Computing and Personalization (SeCoP 2015); moment overseas Workshop on large info administration and repair (BDMS 2015); and a Poster consultation.
[All the workshops have been chosen through a public call-for-proposals approach. The workshop organizers placed an incredible quantity of attempt into soliciting and - lecting papers with a stability of top of the range, new principles and new functions. We requested all workshops to keep on with a inflexible paper choice approach, together with the process to make sure that any application Committee individuals are excluded from the paper evaluate technique of any paper they're concerned with. a demand in regards to the total paper attractiveness cost of not more than 50% used to be additionally imposed on the entire workshops.]
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Extra info for Database Systems for Advanced Applications: DASFAA 2015 International Workshops, SeCoP, BDMS, and Posters, Hanoi, Vietnam, April 20-23, 2015, Revised Selected Papers
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852. It is because the views of opinion leaders have been taken into consideration, and help user done a good judge. However, as the parameter increase dramatically, MAE become more worsens. 97 when α is equal to 1. This process can be explained by user’s judge is not totally under the opinion leaders suggestion. We select the parameter such that the value of MAE is lower. 3. Eﬀect of the Type of Opinion Leaders and the Search Depth D. 4, the direct opinion leaders were pike up from the users who are direct trust by the active user, while the indirect opinion leaders were identiﬁed from the users who are indirect trust by the active user.
There are a set of users U, a set of items I, and a set of ratings R. We use the symbols u, v for the users and i, j for the items. Then ru,i represents a rating given by user u on item i. At the same time, user u will tagging item i use a set Tu of tags he likes, and item i have a set Ti of tags represent its properties as well. Otherwise, in a trust-aware recommender system, tu,v = 1 represents user u trusted user v. And, the active user u may have some trusted neighbors, and these neighbors have some neighbors as well.
Database Systems for Advanced Applications: DASFAA 2015 International Workshops, SeCoP, BDMS, and Posters, Hanoi, Vietnam, April 20-23, 2015, Revised Selected Papers by An Liu, Yoshiharu Ishikawa, Tieyun Qian, Sarana Nutanong, Muhammad Aamir Cheema