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» Querying Partially Sound and Complete Data Sources
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CIKM
2007
Springer
14 years 1 months ago
Towards practically feasible answering of regular path queries in lav data integration
Regular path queries (RPQ’s) are given by means of regular expressions and ask for matching patterns on labeled graphs. RPQ’s have received great attention in the context of s...
Manuel Tamashiro, Alex Thomo, Srinivasan Venkatesh
AAAI
2010
13 years 9 months ago
How Incomplete Is Your Semantic Web Reasoner?
Conjunctive query answering is a key reasoning service for many ontology-based applications. In order to improve scalability, many Semantic Web query answering systems give up com...
Giorgos Stoilos, Bernardo Cuenca Grau, Ian Horrock...
IS
2012
12 years 3 months ago
View determinacy for preserving selected information in data transformations
When transforming data one often wants certain information in the data source to be preserved, i.e., we identify parts of the source data and require these parts to be transformed...
Wenfei Fan, Floris Geerts, Lixiao Zheng
WEBDB
2005
Springer
100views Database» more  WEBDB 2005»
14 years 1 months ago
Malleable Schemas: A Preliminary Report
Large-scale information integration, and in particular, search on the World Wide Web, is pushing the limits on the combination of structured data and unstructured data. By its ver...
Xin Dong, Alon Y. Halevy
PODS
2010
ACM
228views Database» more  PODS 2010»
13 years 9 months ago
Capturing missing tuples and missing values
Databases in real life are often neither entirely closed-world nor entirely open-world. Indeed, databases in an enterprise are typically partially closed, in which a part of the d...
Wenfei Fan, Floris Geerts