4137 search results - page 514 / 828 » Managing Expressions as Data in Relational Database Systems |
276
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SIGMOD
2008
ACM
16 years 6 months ago
2008
ACM
Pattern matching over event streams is increasingly being employed in many areas including financial services, RFIDbased inventory management, click stream analysis, and electroni...
169
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CIKM
2004
Springer
16 years 4 days ago
2004
Springer
An important class of queries is the LIKE predicate in SQL. In the absence of an index, LIKE queries are subject to performance degradation. The notion of indexing on substrings (...
192
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KES
2006
Springer
15 years 6 months ago
2006
Springer
Named entities (e.g., "Kofi Annan", "Coca-Cola", "Second World War") are ubiquitous in web pages and other types of document and often provide a simpl...
172
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VLDB
2010
ACM
15 years 5 months ago
2010
ACM
The frequent items problem is to process a stream of items and find all items occurring more than a given fraction of the time. It is one of the most heavily studied problems in d...
172
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SIGMOD
2011
ACM
14 years 9 months ago
2011
ACM
We study the problem of context-sensitive ranking for document retrieval, where a context is defined as a sub-collection of documents, and is specified by queries provided by do...