525 search results - page 93 / 105 » On Query Algebras for Probabilistic Databases |
PODS
2006
ACM
14 years 7 months ago
2006
ACM
We study the randomized version of a computation model (introduced in [9, 10]) that restricts random access to external memory and internal memory space. Essentially, this model c...
SSDBM
2008
IEEE
14 years 1 months ago
2008
IEEE
Random sampling is a popular technique for providing fast approximate query answers, especially in data warehouse environments. Compared to other types of synopses, random sampling...
INEX
2004
Springer
14 years 23 days ago
2004
Springer
This paper discusses our participation in INEX using the TIJAH XML-IR system. We have enriched the TIJAH system, which follows a standard layered database architecture, with severa...
VLDB
2007
ACM
14 years 1 months ago
2007
ACM
As the Web has evolved into a data-rich repository, with the standard “page view,” current search engines are becoming increasingly inadequate for a wide range of query tasks....
DL
1999
Springer
13 years 11 months ago
1999
Springer
Existing web search engines provide users with the ability to query an off-line database of indices in order to decide on an entry point for further manual navigation. Results are...