283 search results - page 49 / 57 » A study of the effect of term proximity on query expansion |
ICDE
1997
IEEE
14 years 9 months ago
1997
IEEE
We propose a data model and a few algebraic operations that provide semantic foundation to multidimensional databases. The distinguishing feature of the proposed model is the symm...
SIGMOD
2007
ACM
14 years 7 months ago
2007
ACM
A "sparse" data set typically has hundreds or even thousands of attributes, but most objects have non-null values for only a small number of these attributes. A popular ...
EEE
2004
IEEE
13 years 11 months ago
2004
IEEE
E-Services are becoming as promising technology for the effective automation of application integration across Web. They build upon XML, as data format for exchanging messages bet...
KDD
2006
ACM
14 years 8 months ago
2006
ACM
Privacy becomes a more and more serious concern in applications involving microdata. Recently, efficient anonymization has attracted much research work. Most of the previous metho...
ICDM
2008
IEEE
14 years 2 months ago
2008
IEEE
Since Jim Gray introduced the concept of ”data cube” in 1997, data cube, associated with online analytical processing (OLAP), has become a driving engine in data warehouse ind...