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» The Expression Problem Revisited
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ICDE
2011
IEEE
263views Database» more  ICDE 2011»
14 years 4 months ago
Adding regular expressions to graph reachability and pattern queries
—It is increasingly common to find graphs in which edges bear different types, indicating a variety of relationships. For such graphs we propose a class of reachability queries ...
Wenfei Fan, Jianzhong Li, Shuai Ma, Nan Tang, Ying...
CVPR
2003
IEEE
16 years 3 months ago
Simultaneous Feature Selection and Classifier Training via Linear Programming: A Case Study for Face Expression Recognition
A linear programming technique is introduced that jointly performs feature selection and classifier training so that a subset of features is optimally selected together with the c...
Guodong Guo, Charles R. Dyer
SIGMOD
2005
ACM
150views Database» more  SIGMOD 2005»
16 years 1 months ago
Incremental Maintenance of Path Expression Views
Caching data by maintaining materialized views typically requires updating the cache appropriately to reflect dynamic source updates. Extensive research has addressed the problem ...
Arsany Sawires, Jun'ichi Tatemura, Oliver Po, Divy...
CONCUR
2007
Springer
15 years 7 months ago
On the Expressive Power of Global and Local Priority in Process Calculi
Priority is a frequently used feature of many computational systems. In this paper we study the expressiveness of two process algebras enriched with different priority mechanisms...
Cristian Versari, Nadia Busi, Roberto Gorrieri
PODS
2010
ACM
213views Database» more  PODS 2010»
15 years 6 months ago
Expressive languages for path queries over graph-structured data
For many problems arising in the setting of graph querying (such as finding semantic associations in RDF graphs, exact and approximate pattern matching, sequence alignment, etc.)...
Pablo Barceló, Carlos A. Hurtado, Leonid Li...