2191 search results - page 335 / 439 » Query Processing in the ROL system |
WWW
2006
ACM
15 years 10 months ago
2006
ACM
It is well known that Web-page classification can be enhanced by using hyperlinks that provide linkages between Web pages. However, in the Web space, hyperlinks are usually sparse...
PODS
2008
ACM
15 years 10 months ago
2008
ACM
In the study of data exchange one usually assumes an openworld semantics, making it possible to extend instances of target schemas. An alternative closed-world semantics only move...
ICEIS
2009
IEEE
15 years 4 months ago
2009
IEEE
Abstract. In the Web environment, rich, diverse sources of heterogeneous and distributed data are ubiquitous. In fact, even the information characterizing a single entity - like, f...
DEXA
2000
Springer
15 years 2 months ago
2000
Springer
Abstract. Bitmap indices are popular multi-dimensional data structures for accessing read-mostly data such as data warehouse (DW) applications, decision support systems (DSS) and o...
DEXA
1998
Springer
15 years 1 months ago
1998
Springer
Abstract. To achieve acceptable query response times in data warehouse environments, the data have to be pre-aggregated according to the need of the applications and stored redunda...