car
OpenML dataset with id 40975
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Full work available at URL: https://api.openml.org/data/v1/download/18116966/car.arff
Upload date: 30 November 2017
Dataset Characteristics
Number of classes: 4
Number of features: 7 (numeric: 0, symbolic: 7 and in total binary: 0 )
Number of instances: 1,728
Number of instances with missing values: 0
Number of missing values: 0
Author: Marko Bohanec, Blaz Zupan Source: UCI - 1997 Please cite: UCI
Car Evaluation Database This 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 http://www-ai.ijs.si/BlazZupan/car.html).
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.
Changes with respect to car (1)
The ordinal variables are stored as ordered factors in this version.
Relevant papers:
M. Bohanec and V. Rajkovic: Knowledge acquisition and explanation for multi-attribute decision making. In 8th Intl Workshop on Expert Systems and their Applications, Avignon, France. pages 59-78, 1988.
M. Bohanec, V. Rajkovic: Expert system for decision making. Sistemica 1(1), pp. 145-157, 1990.
This page was built for dataset: car
