% 1. Title: 1985 Auto Imports Database% % 2. Source Information:%    -- Creator/Donor: Jeffrey C. Schlimmer (Jeffrey.Schlimmer@a.gp.cs.cmu.edu)%    -- Date: 19 May 1987%    -- Sources:%      1) 1985 Model Import Car and Truck Specifications, 1985 Ward's%         Automotive Yearbook.%      2) Personal Auto Manuals, Insurance Services Office, 160 Water%         Street, New York, NY 10038 %      3) Insurance Collision Report, Insurance Institute for Highway%         Safety, Watergate 600, Washington, DC 20037% % 3. Past Usage:%    -- Kibler,~D., Aha,~D.~W., \& Albert,~M. (1989).  Instance-based prediction%       of real-valued attributes.  {\it Computational Intelligence}, {\it 5},%       51--57.% 	 -- Predicted price of car using all numeric and Boolean attributes% 	 -- Method: an instance-based learning (IBL) algorithm derived from a% 	    localized k-nearest neighbor algorithm.  Compared with a% 	    linear regression prediction...so all instances% 	    with missing attribute values were discarded.  This resulted with% 	    a training set of 159 instances, which was also used as a test% 	    set (minus the actual instance during testing).% 	 -- Results: Percent Average Deviation Error of Prediction from Actual% 	    -- 11.84% for the IBL algorithm% 	    -- 14.12% for the resulting linear regression equation% % 4. Relevant Information:%    -- Description%       This data set consists of three types of entities: (a) the%       specification of an auto in terms of various characteristics, (b)%       its assigned insurance risk rating, (c) its normalized losses in use%       as compared to other cars.  The second rating corresponds to the%       degree to which the auto is more risky than its price indicates.%       Cars are initially assigned a risk factor symbol associated with its%       price.   Then, if it is more risky (or less), this symbol is%       adjusted by moving it up (or down) the scale.  Actuarians call this%       process "symboling".  A value of +3 indicates that the auto is%       risky, -3 that it is probably pretty safe.% %       The third factor is the relative average loss payment per insured%       vehicle year.  This value is normalized for all autos within a%       particular size classification (two-door small, station wagons,%       sports/speciality, etc...), and represents the average loss per car%       per year.% %    -- Note: Several of the attributes in the database could be used as a%             "class" attribute.% % 5. Number of Instances: 205% % 6. Number of Attributes: 26 total%    -- 15 continuous%    -- 1 integer%    -- 10 nominal% % 7. Attribute Information:     %      Attribute:                Attribute Range:%      ------------------        -----------------------------------------------%   1. symboling:                -3, -2, -1, 0, 1, 2, 3.%   2. normalized-losses:        continuous from 65 to 256.%   3. make:                     alfa-romero, audi, bmw, chevrolet, dodge, honda,%                                isuzu, jaguar, mazda, mercedes-benz, mercury,%                                mitsubishi, nissan, peugot, plymouth, porsche,%                                renault, saab, subaru, toyota, volkswagen, volvo%   4. fuel-type:                diesel, gas.%   5. aspiration:               std, turbo.%   6. num-of-doors:             four, two.%   7. body-style:               hardtop, wagon, sedan, hatchback, convertible.%   8. drive-wheels:             4wd, fwd, rwd.%   9. engine-location:          front, rear.%  10. wheel-base:               continuous from 86.6 120.9.%  11. length:                   continuous from 141.1 to 208.1.%  12. width:                    continuous from 60.3 to 72.3.%  13. height:                   continuous from 47.8 to 59.8.%  14. curb-weight:              continuous from 1488 to 4066.%  15. engine-type:              dohc, dohcv, l, ohc, ohcf, ohcv, rotor.%  16. num-of-cylinders:         eight, five, four, six, three, twelve, two.%  17. engine-size:              continuous from 61 to 326.%  18. fuel-system:              1bbl, 2bbl, 4bbl, idi, mfi, mpfi, spdi, spfi.%  19. bore:                     continuous from 2.54 to 3.94.%  20. stroke:                   continuous from 2.07 to 4.17.%  21. compression-ratio:        continuous from 7 to 23.%  22. horsepower:               continuous from 48 to 288.%  23. peak-rpm:                 continuous from 4150 to 6600.%  24. city-mpg:                 continuous from 13 to 49.%  25. highway-mpg:              continuous from 16 to 54.%  26. price:                    continuous from 5118 to 45400.% % 8. Missing Attribute Values: (denoted by "?")%    Attribute #:   Number of instances missing a value:%    2.             41%    6.             2%    19.            4%    20.            4%    22.            2%    23.            2%    26.            4% @relation autos@attribute normalized-losses real@attribute make { alfa-romero, audi, bmw, chevrolet, dodge, honda, isuzu, jaguar, mazda, mercedes-benz, mercury, mitsubishi, nissan, peugot, plymouth, porsche, renault, saab, subaru, toyota, volkswagen, volvo}@attribute fuel-type { diesel, gas}@attribute aspiration { std, turbo}@attribute num-of-doors { four, two}@attribute body-style { hardtop, wagon, sedan, hatchback, convertible}@attribute drive-wheels { 4wd, fwd, rwd}@attribute engine-location { front, rear}@attribute wheel-base real@attribute length real@attribute width real@attribute height real@attribute curb-weight real@attribute engine-type { dohc, dohcv, l, ohc, ohcf, ohcv, rotor}@attribute num-of-cylinders { eight, five, four, six, three, twelve, two}@attribute engine-size real@attribute fuel-system { 1bbl, 2bbl, 4bbl, idi, mfi, mpfi, spdi, spfi}@attribute bore real@attribute stroke real@attribute compression-ratio real@attribute horsepower real@attribute peak-rpm real@attribute city-mpg real@attribute highway-mpg real@attribute price real@attribute symboling { -3, -2, -1, 0, 1, 2, 3}@data?,alfa-romero,gas,std,two,convertible,rwd,front,88.6,168.8,64.1,48.8,2548,dohc,four,130,mpfi,3.47,2.68,9,111,5000,21,27,13495,3?,alfa-romero,gas,std,two,convertible,rwd,front,88.6,168.8,64.1,48.8,2548,dohc,four,130,mpfi,3.47,2.68,9,111,5000,21,27,16500,3?,alfa-romero,gas,std,two,hatchback,rwd,front,94.5,171.2,65.5,52.4,2823,ohcv,six,152,mpfi,2.68,3.47,9,154,5000,19,26,16500,1164,audi,gas,std,four,sedan,fwd,front,99.8,176.6,66.2,54.3,2337,ohc,four,109,mpfi,3.19,3.4,10,102,5500,24,30,13950,2164,audi,gas,std,four,sedan,4wd,front,99.4,176.6,66.4,54.3,2824,ohc,five,136,mpfi,3.19,3.4,8,115,5500,18,22,17450,2?,audi,gas,std,two,sedan,fwd,front,99.8,177.3,66.3,53.1,2507,ohc,five,136,mpfi,3.19,3.4,8.5,110,5500,19,25,15250,2158,audi,gas,std,four,sedan,fwd,front,105.8,192.7,71.4,55.7,2844,ohc,five,136,mpfi,3.19,3.4,8.5,110,5500,19,25,17710,1?,audi,gas,std,four,wagon,fwd,front,105.8,192.7,71.4,55.7,2954,ohc,five,136,mpfi,3.19,3.4,8.5,110,5500,19,25,18920,1158,audi,gas,turbo,four,sedan,fwd,front,105.8,192.7,71.4,55.9,3086,ohc,five,131,mpfi,3.13,3.4,8.3,140,5500,17,20,23875,1?,audi,gas,turbo,two,hatchback,4wd,front,99.5,178.2,67.9,52,3053,ohc,five,131,mpfi,3.13,3.4,7,160,5500,16,22,?,0192,bmw,gas,std,two,sedan,rwd,front,101.2,176.8,64.8,54.3,2395,ohc,four,108,mpfi,3.5,2.8,8.8,101,5800,23,29,16430,2192,bmw,gas,std,four,sedan,rwd,front,101.2,176.8,64.8,54.3,2395,ohc,four,108,mpfi,3.5,2.8,8.8,101,5800,23,29,16925,0188,bmw,gas,std,two,sedan,rwd,front,101.2,176.8,64.8,54.3,2710,ohc,six,164,mpfi,3.31,3.19,9,121,4250,21,28,20970,0188,bmw,gas,std,four,sedan,rwd,front,101.2,176.8,64.8,54.3,2765,ohc,six,164,mpfi,3.31,3.19,9,121,4250,21,28,21105,0?,bmw,gas,std,four,sedan,rwd,front,103.5,189,66.9,55.7,3055,ohc,six,164,mpfi,3.31,3.19,9,121,4250,20,25,24565,1?,bmw,gas,std,four,sedan,rwd,front,103.5,189,66.9,55.7,3230,ohc,six,209,mpfi,3.62,3.39,8,182,5400,16,22,30760,0?,bmw,gas,std,two,sedan,rwd,front,103.5,193.8,67.9,53.7,3380,ohc,six,209,mpfi,3.62,3.39,8,182,5400,16,22,41315,0?,bmw,gas,std,four,sedan,rwd,front,110,197,70.9,56.3,3505,ohc,six,209,mpfi,3.62,3.39,8,182,5400,15,20,36880,0121,chevrolet,gas,std,two,hatchback,fwd,front,88.4,141.1,60.3,53.2,1488,l,three,61,2bbl,2.91,3.03,9.5,48,5100,47,53,5151,298,chevrolet,gas,std,two,hatchback,fwd,front,94.5,155.9,63.6,52,1874,ohc,four,90,2bbl,3.03,3.11,9.6,70,5400,38,43,6295,181,chevrolet,gas,std,four,sedan,fwd,front,94.5,158.8,63.6,52,1909,ohc,four,90,2bbl,3.03,3.11,9.6,70,5400,38,43,6575,0118,dodge,gas,std,two,hatchback,fwd,front,93.7,157.3,63.8,50.8,1876,ohc,four,90,2bbl,2.97,3.23,9.41,68,5500,37,41,5572,1118,dodge,gas,std,two,hatchback,fwd,front,93.7,157.3,63.8,50.8,1876,ohc,four,90,2bbl,2.97,3.23,9.4,68,5500,31,38,6377,1118,dodge,gas,turbo,two,hatchback,fwd,front,93.7,157.3,63.8,50.8,2128,ohc,four,98,mpfi,3.03,3.39,7.6,102,5500,24,30,7957,1148,dodge,gas,std,four,hatchback,fwd,front,93.7,157.3,63.8,50.6,1967,ohc,four,90,2bbl,2.97,3.23,9.4,68,5500,31,38,6229,1148,dodge,gas,std,four,sedan,fwd,front,93.7,157.3,63.8,50.6,1989,ohc,four,90,2bbl,2.97,3.23,9.4,68,5500,31,38,6692,1148,dodge,gas,std,four,sedan,fwd,front,93.7,157.3,63.8,50.6,1989,ohc,four,90,2bbl,2.97,3.23,9.4,68,5500,31,38,7609,1148,dodge,gas,turbo,?,sedan,fwd,front,93.7,157.3,63.8,50.6,2191,ohc,four,98,mpfi,3.03,3.39,7.6,102,5500,24,30,8558,1110,dodge,gas,std,four,wagon,fwd,front,103.3,174.6,64.6,59.8,2535,ohc,four,122,2bbl,3.34,3.46,8.5,88,5000,24,30,8921,-1145,dodge,gas,turbo,two,hatchback,fwd,front,95.9,173.2,66.3,50.2,2811,ohc,four,156,mfi,3.6,3.9,7,145,5000,19,24,12964,3137,honda,gas,std,two,hatchback,fwd,front,86.6,144.6,63.9,50.8,1713,ohc,four,92,1bbl,2.91,3.41,9.6,58,4800,49,54,6479,2137,honda,gas,std,two,hatchback,fwd,front,86.6,144.6,63.9,50.8,1819,ohc,four,92,1bbl,2.91,3.41,9.2,76,6000,31,38,6855,2101,honda,gas,std,two,hatchback,fwd,front,93.7,150,64,52.6,1837,ohc,four,79,1bbl,2.91,3.07,10.1,60,5500,38,42,5399,1101,honda,gas,std,two,hatchback,fwd,front,93.7,150,64,52.6,1940,ohc,four,92,1bbl,2.91,3.41,9.2,76,6000,30,34,6529,1101,honda,gas,std,two,hatchback,fwd,front,93.7,150,64,52.6,1956,ohc,four,92,1bbl,2.91,3.41,9.2,76,6000,30,34,7129,1110,honda,gas,std,four,sedan,fwd,front,96.5,163.4,64,54.5,2010,ohc,four,92,1bbl,2.91,3.41,9.2,76,6000,30,34,7295,078,honda,gas,std,four,wagon,fwd,front,96.5,157.1,63.9,58.3,2024,ohc,four,92,1bbl,2.92,3.41,9.2,76,6000,30,34,7295,0106,honda,gas,std,two,hatchback,fwd,front,96.5,167.5,65.2,53.3,2236,ohc,four,110,1bbl,3.15,3.58,9,86,5800,27,33,7895,0106,honda,gas,std,two,hatchback,fwd,front,96.5,167.5,65.2,53.3,2289,ohc,four,110,1bbl,3.15,3.58,9,86,5800,27,33,9095,085,honda,gas,std,four,sedan,fwd,front,96.5,175.4,65.2,54.1,2304,ohc,four,110,1bbl,3.15,3.58,9,86,5800,27,33,8845,085,honda,gas,std,four,sedan,fwd,front,96.5,175.4,62.5,54.1,2372,ohc,four,110,1bbl,3.15,3.58,9,86,5800,27,33,10295,0