376 search results - page 43 / 76 » Semantics and Evaluation of Top-k Queries in Probabilistic D... |
ICDE
2009
IEEE
14 years 9 months ago
2009
IEEE
In uncertain and probabilistic databases, confidence values (or probabilities) are associated with each data item. Confidence values are assigned to query results based on combinin...
DEXAW
2007
IEEE
13 years 11 months ago
2007
IEEE
The problem of efficiently evaluating XPath and XQuery queries has become increasingly significant since more and more XML data is stored in its native form. We propose a novel op...
DEXAW
2010
IEEE
13 years 9 months ago
2010
IEEE
Abstract--Statistical approaches to document content modeling typically focus either on broad topics or on discourselevel subtopics of a text. We present an analysis of the perform...
ERSHOV
2006
Springer
13 years 11 months ago
2006
Springer
In this work, we present a semantic query optimization technique to improve the efficiency of the evaluation of a subset of SQL:1999 recursive queries. Using datalog notation, we c...
SIGMOD
2009
ACM
14 years 14 days ago
2009
ACM
It has recently been asserted that the usability of a database is as important as its capability. Understanding the database schema, the hidden relationships among attributes in t...