Contextualization from the Bibliographic Structure
Journal article, Peer reviewed
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http://hdl.handle.net/11250/2423256Utgivelsesdato
2012Metadata
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Originalversjon
CEUR Workshop Proceedings 2012;1:9-13Sammendrag
Bibliographic or citation structure in a document contains a
wealth of useful but implicit information. This rich source
of information should be exploited not only to understand
what and where to nd the important documents, but also
as a contextual evidence surrounding the important and not
so important documents. This paper measures the e ects
of contextual evidences accumulated from the bibliographic
structure of documents on retrieval e ectiveness.
We propose a re-weighting model to contextualize bibliographic
evidences in a query-independent and query-dependent
fashion (based on Markovian random walks). The in-links
and out-links of a node in the citation graph could be used
as a context. Here we hypothesize that the document in a
good context (having strong contextual evidences) should be
a good candidate to be relevant to the posed query and vice
versa.
The proposed models are experimentally evaluated using
the iSearch Collection and assessed using standard evaluation
methodologies. We have tested several variants of contextualization,
and the results are signi cantly better than
the baseline (indri run).