{ "data_id": "21", "name": "car", "exact_name": "car", "version": 1, "version_label": "1", "description": "**Author**: Marko Bohanec, Blaz Zupan \r\n**Source**: [UCI](https:\/\/archive.ics.uci.edu\/ml\/datasets\/car+evaluation) - 1997 \r\n**Please cite**: [UCI](http:\/\/archive.ics.uci.edu\/ml\/citation_policy.html) \r\n\r\n**Car Evaluation Database** \r\nThis 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.).\r\n\r\nThe model evaluates cars according to the following concept structure:\r\n \r\n CAR car acceptability\r\n . PRICE overall price\r\n . . buying buying price\r\n . . maint price of the maintenance\r\n . TECH technical characteristics\r\n . . COMFORT comfort\r\n . . . doors number of doors\r\n . . . persons capacity in terms of persons to carry\r\n . . . lug_boot the size of luggage boot\r\n . . safety estimated safety of the car\r\n \r\nInput 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\r\nthese examples sets see http:\/\/www-ai.ijs.si\/BlazZupan\/car.html).\r\n \r\nThe 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.\r\n\r\n### Relevant papers: \r\nM. 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. \r\n\r\nM. Bohanec, V. Rajkovic: Expert system for decision making. Sistemica 1(1), pp. 145-157, 1990. ", "format": "ARFF", "uploader": "Jan van Rijn", "uploader_id": 1, "visibility": "public", "creator": null, "contributor": null, "date": "2014-04-06 23:20:52", "update_comment": null, "last_update": "2014-04-06 23:20:52", "licence": "Public", "status": "deactivated", "error_message": null, "url": "https:\/\/www.openml.org\/data\/download\/21\/dataset_21_car.arff", "kaggle_url": null, "default_target_attribute": "class", "row_id_attribute": null, "ignore_attribute": null, "runs": 19161, "suggest": { "input": [ "car", "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 . . 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