; Data from StatLib (ftp stat.cmu.edu/datasets)
;
; This is the pollution data so loved by writers of papers on ridge regression.
; Source: McDonald, G.C. and Schwing, R.C. (1973) 'Instabilities of regression
; estimates relating air pollution to mortality', Technometrics, vol.15, 463-
; 482.
; Variables in order:
; PREC   Average annual precipitation in inches
; JANT   Average January temperature in degrees F
; JULT   Same for July
; OVR65  ; of 1960 SMSA population aged 65 or older
; POPN   Average household size
; EDUC   Median school years completed by those over 22
; HOUS   ; of housing units which are sound & with all facilities
; DENS   Population per sq. mile in urbanized areas, 1960
; NONW   ; non-white population in urbanized areas, 1960
; WWDRK  ; employed in white collar occupations
; POOR   ; of families with income < $3000
; HC     Relative hydrocarbon pollution potential
; NOX    Same for nitric oxides
; SO@    Same for sulphur dioxide
; HUMID  Annual average ; relative humidity at 1pm
; MORT   Total age-adjusted mortality rate per 100,000

;relation pollution

;attribute PREC real
;attribute JANT real
;attribute JULT real
;attribute OVR65 real
;attribute POPN real
;attribute EDUC real
;attribute HOUS real
;attribute DENS real
;attribute NONW real
;attribute WWDRK real
;attribute POOR real
;attribute HC real
;attribute NOX real
;attribute SO; real
;attribute HUMID real
;attribute MORT real 
(defrelation pollution
(attribute x1 real)
(attribute x2 real)
(attribute x3 real)
(attribute x4 real)
(attribute x5 real)
(attribute x6 real)
(attribute x7 real)
(attribute x8 real)
(attribute x9 real)
(attribute x10 real)
(attribute x11 real)
(attribute x12 real)
(attribute x13 real)
(attribute x14 real)
(attribute x15 real)
(attribute x16 real)
(data 36.0 27.0 71.0 8.1 3.34 11.4 81.5 3243.0 8.8 42.6 11.7 21.0 15.0 59.0 59.0 921.870 )
(data 35.0 23.0 72.0 11.1 3.14 11.0 78.8 4281.0 3.5 50.7 14.4 8.0 10.0 39.0 57.0 997.875 )
(data 44.0 29.0 74.0 10.4 3.21 9.8 81.6 4260.0 0.8 39.4 12.4 6.0 6.0 33.0 54.0 962.354 )
(data 47.0 45.0 79.0 6.5 3.41 11.1 77.5 3125.0 27.1 50.2 20.6 18.0 8.0 24.0 56.0 982.291 )
(data 43.0 35.0 77.0 7.6 3.44 9.6 84.6 6441.0 24.4 43.7 14.3 43.0 38.0 206.0 55.0 1071.289 )
(data 53.0 45.0 80.0 7.7 3.45 10.2 66.8 3325.0 38.5 43.1 25.5 30.0 32.0 72.0 54.0 1030.380 )
(data 43.0 30.0 74.0 10.9 3.23 12.1 83.9 4679.0 3.5 49.2 11.3 21.0 32.0 62.0 56.0 934.700 )
(data 45.0 30.0 73.0 9.3 3.29 10.6 86.0 2140.0 5.3 40.4 10.5 6.0 4.0 4.0 56.0 899.529 )
(data 36.0 24.0 70.0 9.0 3.31 10.5 83.2 6582.0 8.1 42.5 12.6 18.0 12.0 37.0 61.0 1001.902 )
(data 36.0 27.0 72.0 9.5 3.36 10.7 79.3 4213.0 6.7 41.0 13.2 12.0 7.0 20.0 59.0 912.347 )
(data 52.0 42.0 79.0 7.7 3.39 9.6 69.2 2302.0 22.2 41.3 24.2 18.0 8.0 27.0 56.0 1017.613 )
(data 33.0 26.0 76.0 8.6 3.20 10.9 83.4 6122.0 16.3 44.9 10.7 88.0 63.0 278.0 58.0 1024.885 )
(data 40.0 34.0 77.0 9.2 3.21 10.2 77.0 4101.0 13.0 45.7 15.1 26.0 26.0 146.0 57.0 970.467 )
(data 35.0 28.0 71.0 8.8 3.29 11.1 86.3 3042.0 14.7 44.6 11.4 31.0 21.0 64.0 60.0 985.950 )
(data 37.0 31.0 75.0 8.0 3.26 11.9 78.4 4259.0 13.1 49.6 13.9 23.0 9.0 15.0 58.0 958.839 )
(data 35.0 46.0 85.0 7.1 3.22 11.8 79.9 1441.0 14.8 51.2 16.1 1.0 1.0 1.0 54.0 860.101 )
(data 36.0 30.0 75.0 7.5 3.35 11.4 81.9 4029.0 12.4 44.0 12.0 6.0 4.0 16.0 58.0 936.234 )
(data 15.0 30.0 73.0 8.2 3.15 12.2 84.2 4824.0 4.7 53.1 12.7 17.0 8.0 28.0 38.0 871.766 )
(data 31.0 27.0 74.0 7.2 3.44 10.8 87.0 4834.0 15.8 43.5 13.6 52.0 35.0 124.0 59.0 959.221 )
(data 30.0 24.0 72.0 6.5 3.53 10.8 79.5 3694.0 13.1 33.8 12.4 11.0 4.0 11.0 61.0 941.181 )
(data 31.0 45.0 85.0 7.3 3.22 11.4 80.7 1844.0 11.5 48.1 18.5 1.0 1.0 1.0 53.0 891.708 )
(data 31.0 24.0 72.0 9.0 3.37 10.9 82.8 3226.0 5.1 45.2 12.3 5.0 3.0 10.0 61.0 871.338 )
(data 42.0 40.0 77.0 6.1 3.45 10.4 71.8 2269.0 22.7 41.4 19.5 8.0 3.0 5.0 53.0 971.122 )
(data 43.0 27.0 72.0 9.0 3.25 11.5 87.1 2909.0 7.2 51.6  9.5 7.0 3.0 10.0 56.0 887.466 )
(data 46.0 55.0 84.0 5.6 3.35 11.4 79.7 2647.0 21.0 46.9 17.9 6.0 5.0 1.0 59.0 952.529 )
(data 39.0 29.0 75.0 8.7 3.23 11.4 78.6 4412.0 15.6 46.6 13.2 13.0 7.0 33.0 60.0 968.665 )
(data 35.0 31.0 81.0 9.2 3.10 12.0 78.3 3262.0 12.6 48.6 13.9 7.0 4.0 4.0 55.0 919.729 )
(data 43.0 32.0 74.0 10.1 3.38 9.5 79.2 3214.0 2.9 43.7 12.0 11.0 7.0 32.0 54.0 844.053 )
(data 11.0 53.0 68.0 9.2 2.99 12.1 90.6 4700.0 7.8 48.9 12.3 648.0 319.0 130.0 47.0 861.833 )
(data 30.0 35.0 71.0 8.3 3.37 9.9 77.4 4474.0 13.1 42.6 17.7 38.0 37.0 193.0 57.0 989.265 )
(data 50.0 42.0 82.0 7.3 3.49 10.4 72.5 3497.0 36.7 43.3 26.4 15.0 18.0 34.0 59.0 1006.490 )
(data 60.0 67.0 82.0 10.0 2.98 11.5 88.6 4657.0 13.5 47.3 22.4 3.0 1.0 1.0 60.0 861.439 )
(data 30.0 20.0 69.0 8.8 3.26 11.1 85.4 2934.0 5.8 44.0  9.4 33.0 23.0 125.0 64.0 929.150 )
(data 25.0 12.0 73.0 9.2 3.28 12.1 83.1 2095.0 2.0 51.9  9.8 20.0 11.0 26.0 58.0 857.622 )
(data 45.0 40.0 80.0 8.3 3.32 10.1 70.3 2682.0 21.0 46.1 24.1 17.0 14.0 78.0 56.0 961.009 )
(data 46.0 30.0 72.0 10.2 3.16 11.3 83.2 3327.0 8.8 45.3 12.2 4.0 3.0 8.0 58.0 923.234 )
(data 54.0 54.0 81.0 7.4 3.36 9.7 72.8 3172.0 31.4 45.5 24.2 20.0 17.0 1.0 62.0 1113.156 )
(data 42.0 33.0 77.0 9.7 3.03 10.7 83.5 7462.0 11.3 48.7 12.4 41.0 26.0 108.0 58.0 994.648 )
(data 42.0 32.0 76.0 9.1 3.32 10.5 87.5 6092.0 17.5 45.3 13.2 29.0 32.0 161.0 54.0 1015.023 )
(data 36.0 29.0 72.0 9.5 3.32 10.6 77.6 3437.0 8.1 45.5 13.8 45.0 59.0 263.0 56.0 991.290 )
(data 37.0 38.0 67.0 11.3 2.99 12.0 81.5 3387.0 3.6 50.3 13.5 56.0 21.0 44.0 73.0 893.991 )
(data 42.0 29.0 72.0 10.7 3.19 10.1 79.5 3508.0 2.2 38.8 15.7 6.0 4.0 18.0 56.0 938.500 )
(data 41.0 33.0 77.0 11.2 3.08 9.6 79.9 4843.0 2.7 38.6 14.1 11.0 11.0 89.0 54.0 946.185 )
(data 44.0 39.0 78.0 8.2 3.32 11.0 79.9 3768.0 28.6 49.5 17.5 12.0 9.0 48.0 53.0 1025.502 )
(data 32.0 25.0 72.0 10.9 3.21 11.1 82.5 4355.0 5.0 46.4 10.8 7.0 4.0 18.0 60.0 874.281 )
(data 34.0 32.0 79.0 9.3 3.23 9.7 76.8 5160.0 17.2 45.1 15.3 31.0 15.0 68.0 57.0 953.560 )
(data 10.0 55.0 70.0 7.3 3.11 12.1 88.9 3033.0 5.9 51.0 14.0 144.0 66.0 20.0 61.0 839.709 )
(data 18.0 48.0 63.0 9.2 2.92 12.2 87.7 4253.0 13.7 51.2 12.0 311.0 171.0 86.0 71.0 911.701 )
(data 13.0 49.0 68.0 7.0 3.36 12.2 90.7 2702.0 3.0 51.9  9.7 105.0 32.0 3.0 71.0 790.733 )
(data 35.0 40.0 64.0 9.6 3.02 12.2 82.5 3626.0 5.7 54.3 10.1 20.0 7.0 20.0 72.0 899.264 )
(data 45.0 28.0 74.0 10.6 3.21 11.1 82.6 1883.0 3.4 41.9 12.3 5.0 4.0 20.0 56.0 904.155 )
(data 38.0 24.0 72.0 9.8 3.34 11.4 78.0 4923.0 3.8 50.5 11.1 8.0 5.0 25.0 61.0 950.672 )
(data 31.0 26.0 73.0 9.3 3.22 10.7 81.3 3249.0 9.5 43.9 13.6 11.0 7.0 25.0 59.0 972.464 )
(data 40.0 23.0 71.0 11.3 3.28 10.3 73.8 1671.0 2.5 47.4 13.5 5.0 2.0 11.0 60.0 912.202 )
(data 41.0 37.0 78.0 6.2 3.25 12.3 89.5 5308.0 25.9 59.7 10.3 65.0 28.0 102.0 52.0 967.803 )
(data 28.0 32.0 81.0 7.0 3.27 12.1 81.0 3665.0 7.5 51.6 13.2 4.0 2.0 1.0 54.0 823.764 )
(data 45.0 33.0 76.0 7.7 3.39 11.3 82.2 3152.0 12.1 47.3 10.9 14.0 11.0 42.0 56.0 1003.502 )
(data 45.0 24.0 70.0 11.8 3.25 11.1 79.8 3678.0 1.0 44.8 14.0 7.0 3.0 8.0 56.0 895.696 )
(data 42.0 33.0 76.0 9.7 3.22 9.0 76.2 9699.0 4.8 42.2 14.5 8.0 8.0 49.0 54.0 911.817 )
(data 38.0 28.0 72.0 8.9 3.48 10.7 79.8 3451.0 11.7 37.5 13.0 14.0 13.0 39.0 58.0 954.442 )

)