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» On Representations of Some Thickness-Two Graphs
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DKE
2006
79views more  DKE 2006»
14 years 11 months ago
Schema versioning in data warehouses: Enabling cross-version querying via schema augmentation
As several mature implementations of data warehousing systems are fully operational, a crucial role in preserving their up-to-dateness is played by the ability to manage the chang...
Matteo Golfarelli, Jens Lechtenbörger, Stefan...
94
Voted
HT
2005
ACM
15 years 5 months ago
Mind the semantic gap
Hypertext can be seen as a logic representation, where semantics are encoded in both the textual nodes and the graph of links. Systems that have a very formal representation of th...
David E. Millard, Nicholas Gibbins, Danius T. Mich...
97
Voted
ISPD
1999
ACM
112views Hardware» more  ISPD 1999»
15 years 4 months ago
Arbitrary convex and concave rectilinear block packing using sequence-pair
The sequence-pair was proposed in 1994 as a representation of the packing of rectangles of general structure. Since then, there have been e orts to expand its applicability over s...
Kunihiro Fujiyoshi, Hiroshi Murata
104
Voted
ECAI
1994
Springer
15 years 3 months ago
Concept Language with Number Restrictions and Fixpoints, and its Relationship with Mu-calculus
Abstract. Many recent works point out that there are several possibilities of assigning a meaning to a concept definition containing some sort of recursion. In this paper, we argue...
Giuseppe De Giacomo, Maurizio Lenzerini
JAIR
2006
179views more  JAIR 2006»
14 years 11 months ago
The Fast Downward Planning System
Fast Downward is a classical planning system based on heuristic search. It can deal with general deterministic planning problems encoded in the propositional fragment of PDDL2.2, ...
Malte Helmert