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2008

Keyword search on external memory data graphs

8 years 6 months ago
Keyword search on external memory data graphs
Keyword search on graph structured data has attracted a lot of attention in recent years. Graphs are a natural "lowest common denominator" representation which can combine relational, XML and HTML data. Responses to keyword queries are usually modeled as trees that connect nodes matching the keywords. In this paper we address the problem of keyword search on graphs that may be significantly larger than memory. We propose a graph representation technique that combines a condensed version of the graph (the "supernode graph") which is always memory resident, along with whatever parts of the detailed graph are in a cache, to form a multi-granular graph representation. We propose two alternative approaches which extend existing search algorithms to exploit multigranular graphs; both approaches attempt to minimize IO by directing search towards areas of the graph that are likely to give good results. We compare our algorithms with a virtual memory approach on several rea...
Bhavana Bharat Dalvi, Meghana Kshirsagar, S. Sudar
Added 28 Jan 2011
Updated 28 Jan 2011
Type Journal
Year 2008
Where PVLDB
Authors Bhavana Bharat Dalvi, Meghana Kshirsagar, S. Sudarshan
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