Car Evaluation

Donated on 6/1/1997

Derived from simple hierarchical decision model, this database may be useful for testing constructive induction and structure discovery methods.

Dataset Characteristics


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Additional Information

Car Evaluation Database was derived from a simple hierarchical decision model originally developed for the demonstration of DEX, M. Bohanec, V. Rajkovic: Expert system for decision making. Sistemica 1(1), pp. 145-157, 1990.). The model evaluates cars according to the following concept structure: CAR car acceptability . PRICE overall price . . buying buying price . . maint price of the maintenance . TECH technical characteristics . . COMFORT comfort . . . doors number of doors . . . persons capacity in terms of persons to carry . . . lug_boot the size of luggage boot . . safety estimated safety of the car Input attributes are printed in lowercase. Besides the target concept (CAR), the model includes three intermediate concepts: PRICE, TECH, COMFORT. Every concept is in the original model related to its lower level descendants by a set of examples (for these examples sets see The Car Evaluation Database contains examples with the structural information removed, i.e., directly relates CAR to the six input attributes: buying, maint, doors, persons, lug_boot, safety. Because of known underlying concept structure, this database may be particularly useful for testing constructive induction and structure discovery methods.

Has Missing Values

Symbol: 0


Attribute NameRoleTypeDescriptionUnitsMissing Values
buyingFeatureCategoricalbuying pricefalse
maintFeatureCategoricalprice of the maintenancefalse
doorsFeatureCategoricalnumber of doorsfalse
personsFeatureCategoricalcapacity in terms of persons to carryfalse
lug_bootFeatureCategoricalthe size of luggage bootfalse
safetyFeatureCategoricalestimated safety of the carfalse

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Baseline Model Performance

33 citations


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