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In this paper we show how case-based reasoning techniques can be used to extract and reuse solutions previously found by a heuristic (a genetic algorithm in our case) used to solve problems in a specific domain (MSI and SSI combinational circuit design). This reuse of partially built solutions allows us to improve convergence time of our heuristic since the(More)
In this paper, we propose a case-based reasoning scheme in which we extract domain knowledge (in the form of design patterns) from a genetic algorithm used to optimize combinational logic circuits at the gate level. Such information is used in two ways: first, we show how the selection pressure of the genetic algorithm is biased by Boolean simplification(More)
Desktop virtual environments offers the possibility to design a manageable space for safety training, in which trainees can experience situations in context, interact with the virtual environment and practice emergency procedures. This paper presents the design process of a desktop virtual reality prototype for safety training for people who works on(More)
The main purpose of this paper is to show the results obtained with the evaluation of 3D (three dimensional) scanners to obtain 3D models or objects which can be used to build virtual reality systems. Firstly, some basic concepts related to this emerging technology are briefly described. Furthermore an evaluation methodology based on MCDM (multi criteria(More)
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