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IJCAI
2003
13 years 9 months ago
A Tractability Result for Reasoning with Incomplete First-Order Knowledge Bases
In previous work, Levesque proposed an extension to classical databases that would allow for a certain form of incomplete first-order knowledge. Since this extension was suffici...
Yongmei Liu, Hector J. Levesque
GISCIENCE
2008
Springer
130views GIS» more  GISCIENCE 2008»
13 years 8 months ago
Road Networks and Their Incomplete Representation by Network Data Models
Road networks, roads, and junctions are examples of natural language terms whose semantics can be described by affordances of their physical referents. In order to define affordanc...
Simon Scheider, Werner Kuhn
SIGMOD
2005
ACM
117views Database» more  SIGMOD 2005»
14 years 7 months ago
The INFOMIX system for advanced integration of incomplete and inconsistent data
Nicola Leone, Gianluigi Greco, Giovambattista Iann...
VLDB
2008
ACM
164views Database» more  VLDB 2008»
14 years 7 months ago
Structural optimization of a full-text n -gram index using relational normalization
Min-Soo Kim 0002, Kyu-Young Whang, Jae-Gil Lee, Mi...
ICDT
2012
ACM
247views Database» more  ICDT 2012»
11 years 10 months ago
A normal form for preventing redundant tuples in relational databases
We introduce a new normal form, called essential tuple normal form (ETNF), for relations in a relational database where the constraints are given by functional dependencies and jo...
Hugh Darwen, C. J. Date, Ronald Fagin