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ECIR
2006
Springer
15 years 1 months ago
Efficient Phrase Querying with Common Phrase Index
Abstract. In this paper, we propose a common phrase index as an efficient index structure to support phrase queries in a very large text database. Our structure is an extension of ...
Matthew Chang, Chung Keung Poon
DEXA
2006
Springer
118views Database» more  DEXA 2006»
15 years 3 months ago
Using an Oracle Repository to Accelerate XPath Queries
One of the problems associated with XML databases is the poor performance of XPath queries. Although this has attracted much attention by the research community, solutions are eith...
Colm Noonan, Cian Durrigan, Mark Roantree
JIS
2008
119views more  JIS 2008»
14 years 11 months ago
A three-year study on the freshness of web search engine databases
This paper deals with one aspect of the index quality of search engines: index freshness. The purpose is to analyse the update strategies of the major Web search engines Google, Y...
Dirk Lewandowski
BTW
2007
Springer
121views Database» more  BTW 2007»
15 years 6 months ago
Algorithms for merged indexes
B-tree and index into two layers of abstraction. In addition, this paper provides algorithms for (i) concurrency control and recovery including locking of individual keys and of co...
Goetz Graefe
DAWAK
1999
Springer
15 years 4 months ago
Implementation of Multidimensional Index Structures for Knowledge Discovery in Relational Databases
Efficient query processing is one of the basic needs for data mining algorithms. Clustering algorithms, association rule mining algorithms and OLAP tools all rely on efficient quer...
Stefan Berchtold, Christian Böhm, Hans-Peter ...