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Download E-Commerce and Web Technologies: 10th International by Edith Elkind (auth.), Tommaso Di Noia, Francesco Buccafurri PDF

By Edith Elkind (auth.), Tommaso Di Noia, Francesco Buccafurri (eds.)

This ebook constitutes the refereed complaints of the tenth foreign convention on digital trade and net applied sciences, EC-Web 2009, held in Linz, Austria, in September, 2009 at the side of Dexa 2009.

The 31 revised complete papers awarded including 2 invited papers have been conscientiously reviewed and chosen from 61submissions. The papers are geared up in 9 topical periods on e-payments and belief, area wisdom and metadata exploitation, layout and modelling of company and dispensed structures, digital trade and internet 3.0, collaboration-based methods, recommender structures modelling, popularity and fraud detection, recommender platforms and the social net, and recommender platforms in action.

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Additional resources for E-Commerce and Web Technologies: 10th International Conference, EC-Web 2009, Linz, Austria, September 1-4, 2009. Proceedings

Sample text

The questionnaire was filled in by 60 people and these data were used to create several groups with a different number of users. Unlike individual recommendations, when dealing with groups, the most important issue is that the recommendation is as satisfactory as possible for all the members in the group. Thus, through the experimental setup presented in this section, our intention is to analyse which of the three techniques described above obtains the best recommendations as for the whole group satisfaction.

The proposed functional framework, processes, models and rules for developing and delivering personalized location-based tour planning recommendation services are presented in section 3. A prototype system is illustrated and evaluated in section 4. Section 5 contains a concluding remark with future research issues. -C. Yu and H. Chang 2 Literature Review Among many research works regarding personalized and/or location-based mobile services, Chen et al. (2005) propose an architecture design of an m-service portal [7].

Gβ(0,n) = n i=1 Gβ(0,i) ; Gσ0 = Gσ(0,1) Gσ(0,2) . . Gσ(0,m) = m Gσ(0,j) j=1 In the previous formulas, indexes (0, i) and (0, j) represent the i-th and j-th conjunctive element in Gβ and Gσ at round 0. Due to the structure of D, S and O we have that: for each Gβ(0,i) there always exists a Ci in the normalized version of D such that Gβ(0,i) = Ci . The same relation holds between each Gσ(0,j) and Cj in the normalized form of S. Hence, some of Pk and Ph can be partially rewritten in terms of Gβ(0,i) and Gσ(0,j) respectively.

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