Query Answering in Peer-to-Peer Data Exchange Systems
نویسندگان
چکیده
The problem of answering queries posed to a peer who is a member of a peer-to-peer data exchange system is studied. The answers have to be consistent wrt to both the local semantic constraints and the data exchange constraints with other peers; and must also respect certain trust relationships between peers. A semantics for peer consistent answers under exchange constraints and trust relationships is introduced and some techniques for obtaining those answers are presented.
منابع مشابه
ar X iv : c s . D B / 0 40 10 15 v 1 2 0 Ja n 20 04 Query Answering in Peer - to - Peer Data Exchange Systems
The problem of answering queries posed to a peer who is a member of a peer-to-peer data exchange system is studied. The answers have to be consistent wrt to both the local semantic constraints and the data exchange constraints with other peers; and must also respect certain trust relationships between peers. A semantics for peer consistent answers under exchange constraints and trust relationsh...
متن کاملOn the Discovery of the Semantic Context of Queries by Game-Playing
In: Proceedings of the Sixth International Conference On Flexible Query Answering Systems (FQAS-04), Springer-Verlag LNAI 3055, pp. 203-216. c © 2004 by Springer-Verlag. To model query answering, a question arises out of how the meaning of an user’s query is functional to get a valuable answer. In this paper, (1) we investigate the question within an existing peer-to-peer architecture for knowl...
متن کاملPeer Data Management
Peer Data Management (PDM) deals with the management of structured data in unstructured peer-to-peer (P2P) networks. Each peer can store data locally and define relationships between its data and the data provided by other peers. Queries posed to any of the peers are then answered by also considering the information implied by those mappings. The overall goal of PDM is to provide semantically w...
متن کاملSystem P: Completeness-driven Query Answering in Peer Data Management Systems
Peer data management systems (PDMS) are a highly dynamic, decentralized infrastructure for large-scale data integration. They consist of a dynamic set of autonomous peers inter-connected with a network of schema mappings. Queries submitted at a peer are answered with local data and by data that is reached along paths of mappings. Due to redundancies in the mapping network, query answering in PD...
متن کاملDistributed Query Answering in Peer-to-peer Reasoning Systems Technical Report
Interest in distributed reasoning is gaining momentum due to the emergence of the Semantic Web. In this work, we address the problem of meaningfully answering queries to distributed propositional reasoners which may be mutually inconsistent. We define a peer-to-peer query answering framework in which peers may be prioritized. Our formal framework includes distributed entailment relations for bo...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2004