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PODS
2010
ACM
197views Database» more  PODS 2010»
15 years 7 months ago
When data dependencies over SQL tables meet the logics of paradox and S-3
We study functional and multivalued dependencies over SQL tables with NOT NULL constraints. Under a no-information interpretation of null values we develop tools for reasoning. We...
Sven Hartmann, Sebastian Link
EMNLP
2009
15 years 4 months ago
Hypernym Discovery Based on Distributional Similarity and Hierarchical Structures
This paper presents a new method of developing a large-scale hyponymy relation database by combining Wikipedia and other Web documents. We attach new words to the hyponymy databas...
Ichiro Yamada, Kentaro Torisawa, Jun'ichi Kazama, ...
ICDT
2012
ACM
226views Database» more  ICDT 2012»
13 years 9 months ago
Factorised representations of query results: size bounds and readability
We introduce a representation system for relational data based on algebraic factorisation using distributivity of product over union and commutativity of product and union. We giv...
Dan Olteanu, Jakub Zavodny
ICDE
2007
IEEE
157views Database» more  ICDE 2007»
16 years 8 months ago
Object Distinction: Distinguishing Objects with Identical Names
Different people or objects may share identical names in the real world, which causes confusion in many applications. It is a nontrivial task to distinguish those objects, especia...
Xiaoxin Yin, Jiawei Han, Philip S. Yu
ICDE
2003
IEEE
135views Database» more  ICDE 2003»
16 years 8 months ago
Discovery of High-Dimensional
Determining relationships such as functional or inclusion dependencies within and across databases is important for many applications in information integration. When such informa...
Andreas Koeller, Elke A. Rundensteiner