3777 search results - page 377 / 756 » Estimating the Quality of Databases |
150
Voted
VLDB
1999
ACM
15 years 8 months ago
1999
ACM
An important issue for federated systems of diverse data sources is optimizing cross-source queries, without building knowledge of individual sources into the optimizer. This pape...
126
Voted
ICDE
1992
IEEE
15 years 8 months ago
1992
IEEE
This paper presents two algorithms for maintaining Btree index consistency in a DBMS which does not use write-ahead logging (WAL). One algorithm is similar to shadow paging, but i...
166
click to vote
DEXAW
2007
IEEE
15 years 8 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...
131
click to vote
VLDB
2000
ACM
15 years 7 months ago
2000
ACM
In this paper we study how to build an effective incremental crawler. The crawler selectively and incrementally updates its index and/or local collection of web pages, instead of ...
126
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PRL
2000
15 years 3 months ago
2000
: In this study, we introduce a set of one-dimensional features to represent two dimensional shape information for HMM (Hidden Markov Model) based handwritten optical character rec...