/*
  Data from StatLib (ftp stat.cmu.edu/datasets)

  The infamous Longley data, "An appraisal of least-squares programs from
  the point of view of the user", JASA, 62(1967) p819-841.

  Variables are: Number of people employed   (usually the y variable)
                 GNP implicit price deflator
                 GNP
                 Unemployed
                 Armed forces
                 Non-institutionalized population >=14 years of age
                 Year

  Employment is being treated as the class
  attribute.
  
  From ARFF file longley.arff (statlib/numeric)
  
  Cf longley.conf

*/
import util.
data(puzzle2,Data,Vars,Unknown,Ops,Constants,MaxSize,Params) :-
  Data = [ [[A,B,C,D,E,F], G] : [A,B,C,D,E,F,G] in  chunks_of([
83,234289,2356,1590,107608,1947,60323,
88.5,259426,2325,1456,108632,1948,61122,
88.2,258054,3682,1616,109773,1949,60171,
89.5,284599,3351,1650,110929,1950,61187,
96.2,328975,2099,3099,112075,1951,63221,
98.1,346999,1932,3594,113270,1952,63639,
99,365385,1870,3547,115094,1953,64989,
100,363112,3578,3350,116219,1954,63761,
101.2,397469,2904,3048,117388,1955,66019,
104.6,419180,2822,2857,118734,1956,67857,
108.4,442769,2936,2798,120445,1957,68169,
110.8,444546,4681,2637,121950,1958,66513,
112.6,482704,3813,2552,123366,1959,68655,
114.2,502601,3931,2514,125368,1960,69564,
115.7,518173,4806,2572,127852,1961,69331,
116.9,554894,4007,2827,130081,1962,70551
  ],7)],
  Ops = [+,/,*,-,exp,log,sqrt,pow_mod2],   
  Constants = [frand(-10000,10000) : _ in 1..10],
  Unknown = [100,363112,3578,3350,116219,1954],
  Vars = ['deflator','GNP','unemployed','armed_forces','population','year'],
  MaxSize = 21,
  Params = new_map([
                    approx=10,
                    init_size=1000
                    ]).