Auflistung P051 - INFORMATIK 2004 - Informatik verbindet - Band 2 nach Autor:in "Agarwal, Sudhir"
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- KonferenzbeitragOntology based specification of web service policies(Informatik 2004, Informatik verbindet, Band 2, Beiträge der 34. Jahrestagung der Gesellschaft für Informatik e.V. (GI), 2004) Grimm, Stephan; Lamparter, Steffen; Abecker, Andreas; Agarwal, Sudhir; Eberhart, AndreasAn ever-growing number of XML-based languages are used to describe Web Service related issues such as security (WS-Security Policy), access control (XAC-ML), or privacy (P3P-WS). While it is desirable to specify policies in a declarative way, these languages expose great diversity in both syntax and semantics making it hard to realize a unified system. Our contribution to this problem is twofold. First, we present an expressive formal notation for policies. Second, we show how requester-, provider-, and third-party policies can be used for choosing a suitable service while making sure that all relevant policies are obeyed.
- KonferenzbeitragProcess-based integration of heterogeneous information sources(Informatik 2004, Informatik verbindet, Band 2, Beiträge der 34. Jahrestagung der Gesellschaft für Informatik e.V. (GI), 2004) Agarwal, Sudhir; Haase, PeterThe number of information sources in the Web is growing day by day with a tremendous speed. At the same time, users tend to manage more and more tasks electronically, thereby using publicly available information sources. Since the Web is an open, distributed and dynamic environment, in which information sources are offered and controlled autonomously and independently, the interoperability of available information is still a big challenge. In this paper, we present a process-based approach for integrating various information sources and illustrate our approach by an example. Our approach also allows dynamic and flexible integration of information sources provided by the users.