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ICALP
2009
Springer
14 years 9 months ago
Node-Weighted Steiner Tree and Group Steiner Tree in Planar Graphs
We improve the approximation ratios for two optimization problems in planar graphs. For node-weighted Steiner tree, a classical network-optimization problem, the best achievable ap...
Erik D. Demaine, MohammadTaghi Hajiaghayi, Philip ...
SIGMOD
2005
ACM
197views Database» more  SIGMOD 2005»
14 years 9 months ago
Schema and ontology matching with COMA++
We demonstrate the schema and ontology matching tool COMA++. It extends our previous prototype COMA utilizing a composite approach to combine different match algorithms [3]. COMA+...
David Aumueller, Hong Hai Do, Sabine Massmann, Erh...
SIGMOD
2004
ACM
163views Database» more  SIGMOD 2004»
14 years 9 months ago
FleXPath: Flexible Structure and Full-Text Querying for XML
Querying XML data is a well-explored topic with powerful databasestyle query languages such as XPath and XQuery set to become W3C standards. An equally compelling paradigm for que...
Sihem Amer-Yahia, Laks V. S. Lakshmanan, Shashank ...
SIGMOD
2003
ACM
146views Database» more  SIGMOD 2003»
14 years 9 months ago
The Piazza peer data management project
A major problem in today's information-driven world is that sharing heterogeneous, semantically rich data is incredibly difficult. Piazza is a peer data management system tha...
Igor Tatarinov, Zachary G. Ives, Jayant Madhavan, ...
ICSE
2005
IEEE-ACM
14 years 9 months ago
Object naming analysis for reverse-engineered sequence diagrams
UML sequence diagrams are commonly used to represent object interactions in software systems. This work considers the problem of extracting UML sequence diagrams from existing cod...
Atanas Rountev, Beth Harkness Connell