Zitationsschlüssel:
Dreger/etal:98b
Titel:
Provider Selection--Design and Implementation of the Medoc Broker
Autor(en):
M. Dreger
N. Fuhr
K. Großjohann
S. Lohrum
In:
Zitationsschlüssel:
Barth/etal:98
Titel:
Digital Libraries in Computer Science: The MeDoc Approach
Autor(en):
A. Barth
M. Breu
A. Endres
A. de Kemp
Verlag:
Springer
In:
Digital Libraries in Computer Science: The MeDoc Approach
Jahr:
1998

Klassifikation(en):
J.1, H.2.6, I.7, C.2, I.4.1, E.4.5

BibTeX-Eintrag

Kapitel:
II: Design Considerations of the MeDoc System
Seite(n):
67--78
Jahr:
1998

Zusammenfassung:
One of the objectives of the Medoc system is transparent searching in heterogeneous distributed bibliographic and full text databases (information providers). For a sufficiently large number of information providers and automatic method for provider selection becomes necessary. We take a decision-theoretic approach: we estimate the cost for retrieving n relevant documents from each provider, then choose the combination which minimizes total costs. The main cost factor is the total number of relevant documents in each database; additional factors are the retrieval quality of the database, the costs for retrieving a document from the database, and the user-specific costs for retrieving a non-relevant or a relevant document, respectively. In this paper, we also describe a first implementation of this approach where each factor is made explicit so that the implementation can easily be adapted for specific situations.

BibTeX-Eintrag