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SIGMOD
2007
ACM
160views Database» more  SIGMOD 2007»
16 years 22 days ago
Supporting ranking and clustering as generalized order-by and group-by
The Boolean semantics of SQL queries cannot adequately capture the "fuzzy" preferences and "soft" criteria required in non-traditional data retrieval applicati...
Chengkai Li, Min Wang, Lipyeow Lim, Haixun Wang, K...
136
Voted
PODS
2007
ACM
203views Database» more  PODS 2007»
16 years 22 days ago
Decision trees for entity identification: approximation algorithms and hardness results
We consider the problem of constructing decision trees for entity identification from a given relational table. The input is a table containing information about a set of entities...
Venkatesan T. Chakaravarthy, Vinayaka Pandit, Samb...
PODS
2007
ACM
159views Database» more  PODS 2007»
16 years 22 days ago
Generalized hypertree decompositions: np-hardness and tractable variants
The generalized hypertree width GHW(H) of a hypergraph H is a measure of its cyclicity. Classes of conjunctive queries or constraint satisfaction problems whose associated hypergr...
Georg Gottlob, Thomas Schwentick, Zoltán Mi...
127
Voted
ICSE
2007
IEEE-ACM
16 years 20 days ago
A Robust Semantic Overlay Network for Microgrid Control Applications
Abstract. Control systems for electrical microgrids rely ever more on heterogeneous off-the-shelf technology for hardware, software and networking among the intelligent electronic ...
Geert Deconinck, Koen Vanthournout, Hakem Beitolla...
120
Voted
ICFP
2007
ACM
16 years 16 days ago
A type system for recursive modules
There has been much work in recent years on extending ML with recursive modules. One of the most difficult problems in the development of such an extension is the double vision pr...
Derek Dreyer
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