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HEURISTIC SPACE [4 records]

Record 1 2006-01-26

English

Subject field(s)
  • Artificial Intelligence
DEF

In expert systems, this refers to the process whereby one or more branches of a decision tree are "cut off" or ignored. In effect, when an expert system consultation is underway, heuristic rules reduce the search space by determining that certain branches(or subsets of rules) can be ignored.

OBS

pruning, cut-off: terms standardized by ISO and CSA.

Key term(s)
  • cutoff
  • tree cut-off

French

Domaine(s)
  • Intelligence artificielle
DEF

Procédure d'optimisation en résolution de problèmes.

DEF

Élimination de sommets et de leurs successeurs selon des techniques telles alpha-bêta, minimaux et négamax, lorsqu'ils ne passent pas le test d'acceptabilité.

CONT

élagage alpha-bêta, élagage heuristique.

OBS

élagage : terme normalisé par l'ISO et la CSA.

Spanish

Save record 1

Record 2 1996-01-04

English

Subject field(s)
  • Artificial Intelligence
DEF

The set of alternative candidate concept descriptions that are consistent with the training data, knowledge, and assumptions of the concept learner. This set defines a partially learned concept and can be represented in terms of its maximally general and maximally specific members.

CONT

For each partially-learned heuristic, we refer to the set of all plausible descriptions of the heuristic as the version space of the partially-learned heuristic, relative to the observed instances and the language in which heuristics are described.

CONT

Any version space can be represented compactly by storing only its maximally-specific and maximally-general elements.

French

Domaine(s)
  • Intelligence artificielle
DEF

Ensemble des descriptions de concept compatibles avec les données, connaissances ou présuppositions disponibles.

CONT

On définit l'espace de versions pour un ensemble d'instances E comme étant l'ensemble de toutes les descriptions admissibles pour E. Chaque élément de cet ensemble représente une version du concept recherché.

CONT

Le contour inférieur d'un espace de versions bien formé V est l'ensemble de ses descriptions minimales; son contour supérieur est l'ensemble de ses descriptions maximales.

Spanish

Save record 2

Record 3 1992-10-01

English

Subject field(s)
  • Artificial Intelligence
DEF

A description ... (that) applies to all the known positive instances associated with the heuristic, but to none of the negative instances.

CONT

... for each partially-learned heuristic, we refer to the set of all plausible descriptions of the heuristic as the version space....

French

Domaine(s)
  • Intelligence artificielle
CONT

On définit l'espace de versions pour un ensemble d'instances E comme étant l'ensemble de toutes les descriptions admissibles pour E.

OBS

Une description acceptable est admissible pour E si et seulement si elle est à la fois caractéristique et discriminante pour E.

Spanish

Save record 3

Record 4 1986-10-31

English

Subject field(s)
  • Artificial Intelligence
CONT

Tasks are to be posed as heuristic spaces to be searched. This is also called the problem-space representation.

French

Domaine(s)
  • Intelligence artificielle

Spanish

Save record 4

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