Download Advances in Data and Web Management: Joint 9th Asia-Pacific by Christos Faloutsos (auth.), Guozhu Dong, Xuemin Lin, Wei PDF

By Christos Faloutsos (auth.), Guozhu Dong, Xuemin Lin, Wei Wang, Yun Yang, Jeffrey Xu Yu (eds.)

The fast occurrence of internet purposes calls for new applied sciences for the - signal, implementation and administration of Web-based details structures, and for the administration and research of knowledge on the internet. The joint AP- Web/WAIM 2007 convention, combining the traditions of APWeb and WAIM conferences,wasaninternationalforumforresearchers,practitioners,developers and clients to percentage and alternate state-of-the-art principles, effects, event, te- niques and instruments in reference to all features of internet info administration. The convention drew jointly unique learn and commercial papers at the thought, layout and implementation of Web-based details structures and at the m- agement and research of knowledge on the net. The convention used to be held within the appealing mountain region of Huang Shan (Yellow Mountains) — the one twin international historical past indexed quarter in China for its awesome typical attractiveness and richandwell-preservedculture. Theseproceedingscollectedthe technicalpapers chosen for presentation on the convention, held at Huang Shan, June 16–18, 2007. according to the decision for papers, this system Committee acquired 554 full-paper submissions from North the United States, South the US, Europe, Asia, and Oceania. every one submitted paper underwent a rigorous evaluate by means of 3 in- pendent referees, with distinct overview reviews. eventually, forty seven complete learn papers and 36 brief examine papers have been authorized, from Austria, Australia, Canada, China,Cyprus,Greece,HongKong,Japan,Korea,Singapore,Taiwan,andUSA, representing a aggressive reputation fee of 15%.

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Additional resources for Advances in Data and Web Management: Joint 9th Asia-Pacific Web Conference, APWeb 2007, and 8th International Conference, on Web-Age Information Management, WAIM 2007, Huang Shan, China, June 16-18, 2007. Proceedings

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Therefore, locating desired services might be difficult. Keywords 1 1 SVD(LSA) 2 2 3 4 Ontology PLSA 3 WebServices 4 Fig. 1. The approaches of discovering and matching web services A commonly used approach on discovering and matching web services is to directly associate a user’s requirements to the advertisements of web services (solid line 1 shown in Fig. ). For example, a user types keywords in a web service search engine [24] to look for the desired web services. If the typed words are included in or identical to the descriptions of some services, the return services might be relevant to his need.

The weights on nodes and edges are predetermined [9, 10]. Given a l keyword query, p1 , p2 , · · · , pl , against a relational database or equivalently the corresponding graph G(V, E). Let Vi ⊆ V be a set of nodes that contain the keyword pi . An answer to such a query is a weighted and connected tree containing at least one node from each Vi . The problem we are targeting is how to find top-k minimum cost tuple connection trees. A dynamic programming approach was proposed to find the optimal top-1 with the time complexity of O(3L · N + 2L ((L + log N ) · N + M )), where N and M are the numbers of nodes and edges in the graph G respectively.

Wang et al. However, Fang Liu et al. also pointed out that the link structures (primary key to foreign key relationships as well as some hidden join conditions), and some non-text columns can be further utilized to improve the effectiveness of KSORD [14]. The result presentation also affects the effectiveness of KSORD to a great extent [1, 11]. Firstly, the results need to be semantically meaningful to users. However, a result which is a tuple or a tuple connection tree is not so easy to understand for end users.

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