297 search results - page 39 / 60 » Polynomial heuristics for query optimization |
VL
1995
IEEE
13 years 11 months ago
1995
IEEE
Buffering of intermediate results in dataflow diagrams can significantly reduce latency when a user browses these results or re-executes a diagram with slightly different inputs. ...
JAR
2007
13 years 7 months ago
2007
As applications of description logics proliferate, efficient reasoning with knowledge bases containing many assertions becomes ever more important. For such cases, we developed a n...
COMGEO
2012
ACM
12 years 3 months ago
2012
ACM
We study a class of multi-commodity flow problems in geometric domains: For a given planar domain P populated with obstacles (holes) of K ≥ 2 types, compute a set of thick path...
SIGMOD
2004
ACM
14 years 8 months ago
2004
ACM
The rich dependency structure found in the columns of real-world relational databases can be exploited to great advantage, but can also cause query optimizers--which usually assum...
ICALP
2005
Springer
14 years 1 months ago
2005
Springer
We consider the problem of efficiently designing sets (codes) of equal-length DNA strings (words) that satisfy certain combinatorial constraints. This problem has numerous motivati...