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KBSE
1995
IEEE
15 years 1 months ago
A Transformation System for Interactive Reformulation of Design Optimization Strategies
Numerical design optimization algorithms are highly sensitive to the particular formulation of the optimization problems they are given. The formulation of the search space, the o...
Thomas Ellman, John Keane, Takahiro Murata, Mark S...
SPATIALCOGNITION
2000
Springer
15 years 1 months ago
Inference and Visualization of Spatial Relations
We present an approach to spatial inference which is based on the procedural semantics of spatial relations. In contrast to qualitative reasoning, we do not use discrete symbolic m...
Sylvia Wiebrock, Lars Wittenburg, Ute Schmid, Frit...
VLDB
1994
ACM
115views Database» more  VLDB 1994»
15 years 2 months ago
Database Graph Views: A Practical Model to Manage Persistent Graphs
Advanced technical applications like routing systems or electrical network managementsystems introduce the need for complex manipulations of large size graphs. Efficiently support...
Alejandro Gutiérrez, Philippe Pucheral, Her...
MODELS
2007
Springer
15 years 4 months ago
Bidirectional Model Transformations in QVT: Semantic Issues and Open Questions
Abstract. We consider the OMG’s Queries, Views and Transformations (QVT) standard as applied to the specification of bidirectional transformations between models. We discuss wha...
Perdita Stevens
CDC
2009
IEEE
15 years 2 months ago
Transformability from discrete-time periodic non-homogeneous systems to time-invariant ones
Abstract-- This paper considers when a discrete-time periodic non-homogeneous system can be transformed to a time-invariant one by using regular linear mappings of state variables,...
Yoshikazu Hayakawa, Tomohiko Jimbo