From 076d48d459ecbf366b0a59ab6afe68af99bdcff2 Mon Sep 17 00:00:00 2001 From: Chris Dyer Date: Sun, 13 May 2012 22:20:06 -0700 Subject: eval stuff for creg, test data from ark regression --- creg/README | 18 ++- creg/creg.cc | 60 +++++++- creg/json_feature_map_lexer.ll | 2 +- creg/test_data/auto-mpg.testfeat | 93 ++++++++++++ creg/test_data/auto-mpg.testresp | 93 ++++++++++++ creg/test_data/auto-mpg.trainfeat | 300 ++++++++++++++++++++++++++++++++++++++ creg/test_data/auto-mpg.trainresp | 300 ++++++++++++++++++++++++++++++++++++++ 7 files changed, 856 insertions(+), 10 deletions(-) create mode 100644 creg/test_data/auto-mpg.testfeat create mode 100644 creg/test_data/auto-mpg.testresp create mode 100644 creg/test_data/auto-mpg.trainfeat create mode 100644 creg/test_data/auto-mpg.trainresp (limited to 'creg') diff --git a/creg/README b/creg/README index 2c04c83b..28a71d11 100644 --- a/creg/README +++ b/creg/README @@ -1,7 +1,17 @@ creg is a fast tool for training linear and logistic regression models with -l_1 and l_2 regularization. Its data (feature and response) format is compatible -with ARKRegression. +l_1 and l_2 regularization. Its data (feature and response) format is +compatible with ARKRegression. -Example invokation: -$ ./creg -x test_data/iris.trainfeat -y test_data/iris.trainresp --l2 100 +EXAMPLES + +Logistic regression example (training only): + $ ./creg -x test_data/iris.trainfeat -y test_data/iris.trainresp --l1 1.0 > weights.txt + +Logistic regression example (training and testing): + $ ./creg -x test_data/iris.trainfeat -y test_data/iris.trainresp --l1 1.0 \ + -t test_data/iris.testfeat -s test_data/iris.testresp > weights.txt + +Linear regression example (training and testing): + $ ./creg -n -x test_data/auto-mpg.trainfeat -y test_data/auto-mpg.trainresp --l2 1000 \ + -t test_data/auto-mpg.testfeat -s test_data/auto-mpg.testresp > weights.txt diff --git a/creg/creg.cc b/creg/creg.cc index 43f01bc4..005ec9ac 100644 --- a/creg/creg.cc +++ b/creg/creg.cc @@ -2,6 +2,8 @@ #include #include #include +#include +#include #include #include @@ -25,6 +27,8 @@ void InitCommandLine(int argc, char** argv, po::variables_map* conf) { ("linear,n", "Linear (rather than logistic) regression") ("l1",po::value()->default_value(0.0), "l_1 regularization strength") ("l2",po::value()->default_value(0.0), "l_2 regularization strength") + ("test_features,t", po::value(), "File containing training instance features (ARKRegression format)") + ("test_responses,s", po::value(), "File containing training response features (ARKRegression format)") ("weights,w", po::value(), "Initial weights") ("epsilon,e", po::value()->default_value(1e-4), "Epsilon for convergence test. Terminates when ||g|| < epsilon * max(1, ||w||)") ("memory_buffers,m",po::value()->default_value(40), "Number of memory buffers for LBFGS") @@ -77,7 +81,7 @@ void ReadLabeledInstances(const string& ffeats, int lc = 0; ReaderHelper rh(xy_pairs); unordered_map label2id; - cerr << "Reading training responses from " << fresp << " ..." << endl; + cerr << "Reading responses from " << fresp << " ..." << endl; ReadFile fr(fresp); for (unsigned i = 0; i < labels->size(); ++i) label2id[(*labels)[i]] = i; @@ -116,7 +120,7 @@ void ReadLabeledInstances(const string& ffeats, cerr << " " << (*labels)[j]; cerr << endl; } - cerr << "Reading training features from " << ffeats << " ..." << endl; + cerr << "Reading features from " << ffeats << " ..." << endl; ReadFile ff(ffeats); JSONFeatureMapLexer::ReadRules(ff.stream(), ReaderCB, &rh); if (rh.flag) cerr << endl; @@ -204,6 +208,23 @@ struct UnivariateSquaredLoss : public BaseLoss { double reg = ApplyRegularizationTerms(x, g); return cll + reg; } + + // return root mse + double Evaluate(const vector& test, + const vector& w) const { + vector dotprods(1); // K-1 degrees of freedom + double mse = 0; + for (unsigned i = 0; i < test.size(); ++i) { + const SparseVector& fmapx = test[i].x; + const float refy = test[i].y.value; + ComputeDotProducts(fmapx, w, &dotprods); + double diff = dotprods[0] - refy; + cerr << "line=" << (i+1) << " true=" << refy << " pred=" << dotprods[0] << endl; + mse += diff * diff; + } + mse /= test.size(); + return sqrt(mse); + } }; struct MulticlassLogLoss : public BaseLoss { @@ -243,6 +264,23 @@ struct MulticlassLogLoss : public BaseLoss { double reg = ApplyRegularizationTerms(x, g); return cll + reg; } + + double Evaluate(const vector& test, + const vector& w) const { + vector dotprods(K - 1); // K-1 degrees of freedom + double correct = 0; + for (unsigned i = 0; i < test.size(); ++i) { + const SparseVector& fmapx = test[i].x; + const unsigned refy = test[i].y.label; + ComputeDotProducts(fmapx, w, &dotprods); + double best = 0; + unsigned besty = dotprods.size(); + for (unsigned y = 0; y < dotprods.size(); ++y) + if (dotprods[y] > best) { best = dotprods[y]; besty = y; } + if (refy == besty) { ++correct; } + } + return correct / test.size(); + } }; template @@ -261,9 +299,6 @@ int main(int argc, char** argv) { po::variables_map conf; InitCommandLine(argc, argv, &conf); string line; - vector training; - const string xfile = conf["training_features"].as(); - const string yfile = conf["training_responses"].as(); double l1 = conf["l1"].as(); double l2 = conf["l2"].as(); const unsigned memory_buffers = conf["memory_buffers"].as(); @@ -278,8 +313,16 @@ int main(int argc, char** argv) { } const bool is_continuous = conf.count("linear"); + const string xfile = conf["training_features"].as(); + const string yfile = conf["training_responses"].as(); vector labels; // only populated for non-continuous models + vector training, test; ReadLabeledInstances(xfile, yfile, is_continuous, &training, &labels); + if (conf.count("test_features")) { + const string txfile = conf["test_features"].as(); + const string tyfile = conf["test_responses"].as(); + ReadLabeledInstances(txfile, tyfile, is_continuous, &test, &labels); + } if (conf.count("weights")) { cerr << "Initial weights are not implemented, please implement." << endl; @@ -298,6 +341,10 @@ int main(int argc, char** argv) { cerr << " Number of parameters: " << weights.size() << endl; UnivariateSquaredLoss loss(training, p, l2); LearnParameters(loss, l1, 1, memory_buffers, epsilon, &weights); + + if (test.size()) + cerr << "Held-out root MSE: " << loss.Evaluate(test, weights) << endl; + cout << p << "\t***CONTINUOUS***" << endl; cout << "***BIAS***\t" << weights[0] << endl; for (unsigned f = 0; f < p; ++f) { @@ -314,6 +361,9 @@ int main(int argc, char** argv) { MulticlassLogLoss loss(training, K, p, l2); LearnParameters(loss, l1, km1, memory_buffers, epsilon, &weights); + if (test.size()) + cerr << "Held-out accuracy: " << loss.Evaluate(test, weights) << endl; + cout << p << "\t***CATEGORICAL***"; for (unsigned y = 0; y < K; ++y) cout << '\t' << labels[y]; diff --git a/creg/json_feature_map_lexer.ll b/creg/json_feature_map_lexer.ll index 372b52f5..cbb6d9a9 100644 --- a/creg/json_feature_map_lexer.ll +++ b/creg/json_feature_map_lexer.ll @@ -61,7 +61,7 @@ inline unsigned unicode_escape_to_utf8(uint16_t w1, uint16_t w2, char* putf8) { %} -ID [A-Za-z_0-9]+ +ID [^ \t\n\r]+ HEX_D [a-fA-F0-9] INT [-]?[0-9]+ DOUBLE {INT}((\.[0-9]+)?([eE][-+]?[0-9]+)?) diff --git a/creg/test_data/auto-mpg.testfeat b/creg/test_data/auto-mpg.testfeat new file mode 100644 index 00000000..91c21e99 --- /dev/null +++ b/creg/test_data/auto-mpg.testfeat @@ -0,0 +1,93 @@ +test1_fiat_124b {"horsepower": 76.0, "acceleration": 14.5, "cylinders": 4.0, "displacement": 88.0, "weight": 2065.0} +test2_dodge_aspen {"horsepower": 110.0, "acceleration": 18.7, "cylinders": 6.0, "displacement": 225.0, "weight": 3620.0} +test3_toyota_celica_gt_liftback {"horsepower": 95.0, "acceleration": 14.8, "cylinders": 4.0, "displacement": 134.0, "weight": 2515.0} +test4_amc_matador {"horsepower": 110.0, "acceleration": 18.0, "cylinders": 6.0, "displacement": 258.0, "weight": 3632.0} +test5_audi_5000s_(diesel) {"horsepower": 67.0, "acceleration": 19.9, "cylinders": 5.0, "displacement": 121.0, "weight": 2950.0} +test6_datsun_310 {"horsepower": 65.0, "acceleration": 16.4, "cylinders": 4.0, "displacement": 86.0, "weight": 2019.0} +test7_chevrolet_woody {"horsepower": 60.0, "acceleration": 22.1, "cylinders": 4.0, "displacement": 98.0, "weight": 2164.0} +test8_volkswagen_1131_deluxe_sedan {"horsepower": 46.0, "acceleration": 20.5, "cylinders": 4.0, "displacement": 97.0, "weight": 1835.0} +test9_plymouth_satellite_sebring {"horsepower": 105.0, "acceleration": 16.5, "cylinders": 6.0, "displacement": 225.0, "weight": 3613.0} +test10_amc_matador {"horsepower": 120.0, "acceleration": 13.9, "cylinders": 8.0, "displacement": 304.0, "weight": 3962.0} +test11_chevrolet_chevette {"horsepower": 52.0, "acceleration": 22.2, "cylinders": 4.0, "displacement": 85.0, "weight": 2035.0} +test12_buick_century_special {"horsepower": 105.0, "acceleration": 15.8, "cylinders": 6.0, "displacement": 231.0, "weight": 3380.0} +test13_ford_escort_2h {"horsepower": 65.0, "acceleration": 20.7, "cylinders": 4.0, "displacement": 98.0, "weight": 2380.0} +test14_ford_torino_500 {"horsepower": 88.0, "acceleration": 15.5, "cylinders": 6.0, "displacement": 250.0, "weight": 3302.0} +test15_dodge_aries_wagon_(sw) {"horsepower": 92.0, "acceleration": 14.4, "cylinders": 4.0, "displacement": 156.0, "weight": 2620.0} +test16_plymouth_valiant {"horsepower": 105.0, "acceleration": 16.5, "cylinders": 6.0, "displacement": 225.0, "weight": 3121.0} +test17_amc_pacer {"horsepower": 90.0, "acceleration": 17.0, "cylinders": 6.0, "displacement": 232.0, "weight": 3211.0} +test18_honda_civic {"horsepower": 97.0, "acceleration": 15.0, "cylinders": 4.0, "displacement": 120.0, "weight": 2489.0} +test19_ford_ltd {"horsepower": 148.0, "acceleration": 13.5, "cylinders": 8.0, "displacement": 351.0, "weight": 4657.0} +test20_volkswagen_rabbit {"horsepower": 70.0, "acceleration": 14.0, "cylinders": 4.0, "displacement": 90.0, "weight": 1937.0} +test21_honda_civic_1500_gl {"horsepower": 67.0, "acceleration": 13.8, "cylinders": 4.0, "displacement": 91.0, "weight": 1850.0} +test22_chevrolet_impala {"horsepower": 165.0, "acceleration": 12.0, "cylinders": 8.0, "displacement": 350.0, "weight": 4209.0} +test23_chevrolet_chevette {"horsepower": 63.0, "acceleration": 17.0, "cylinders": 4.0, "displacement": 98.0, "weight": 2051.0} +test24_amc_concord {"horsepower": 90.0, "acceleration": 17.2, "cylinders": 6.0, "displacement": 232.0, "weight": 3210.0} +test25_ford_pinto {"horsepower": 83.0, "acceleration": 17.0, "cylinders": 4.0, "displacement": 140.0, "weight": 2639.0} +test26_ford_country_squire_(sw) {"horsepower": 142.0, "acceleration": 14.3, "cylinders": 8.0, "displacement": 351.0, "weight": 4054.0} +test27_plymouth_valiant_custom {"horsepower": 95.0, "acceleration": 16.0, "cylinders": 6.0, "displacement": 225.0, "weight": 3264.0} +test28_chevy_s-10 {"horsepower": 82.0, "acceleration": 19.4, "cylinders": 4.0, "displacement": 119.0, "weight": 2720.0} +test29_maxda_rx3 {"horsepower": 90.0, "acceleration": 13.5, "cylinders": 3.0, "displacement": 70.0, "weight": 2124.0} +test30_plymouth_sapporo {"horsepower": 105.0, "acceleration": 16.7, "cylinders": 4.0, "displacement": 156.0, "weight": 2745.0} +test31_amc_hornet {"horsepower": 90.0, "acceleration": 17.6, "cylinders": 6.0, "displacement": 232.0, "weight": 3085.0} +test32_chevrolet_caprice_classic {"horsepower": 145.0, "acceleration": 12.5, "cylinders": 8.0, "displacement": 305.0, "weight": 3880.0} +test33_pontiac_sunbird_coupe {"horsepower": 88.0, "acceleration": 16.0, "cylinders": 4.0, "displacement": 151.0, "weight": 2740.0} +test34_mercury_marquis_brougham {"horsepower": 198.0, "acceleration": 11.5, "cylinders": 8.0, "displacement": 429.0, "weight": 4952.0} +test35_mercury_monarch_ghia {"horsepower": 139.0, "acceleration": 12.8, "cylinders": 8.0, "displacement": 302.0, "weight": 3570.0} +test36_ford_country_squire_(sw) {"horsepower": 170.0, "acceleration": 12.0, "cylinders": 8.0, "displacement": 400.0, "weight": 4746.0} +test37_audi_fox {"horsepower": 83.0, "acceleration": 16.5, "cylinders": 4.0, "displacement": 98.0, "weight": 2219.0} +test38_triumph_tr7_coupe {"horsepower": 88.0, "acceleration": 15.1, "cylinders": 4.0, "displacement": 122.0, "weight": 2500.0} +test39_dodge_d100 {"horsepower": 150.0, "acceleration": 14.0, "cylinders": 8.0, "displacement": 318.0, "weight": 3755.0} +test40_mercury_cougar_brougham {"horsepower": 130.0, "acceleration": 14.9, "cylinders": 8.0, "displacement": 302.0, "weight": 4295.0} +test41_pontiac_phoenix_lj {"horsepower": 105.0, "acceleration": 19.2, "cylinders": 6.0, "displacement": 231.0, "weight": 3535.0} +test42_vw_rabbit_custom {"horsepower": 71.0, "acceleration": 14.0, "cylinders": 4.0, "displacement": 89.0, "weight": 1925.0} +test43_peugeot_504 {"horsepower": 87.0, "acceleration": 17.5, "cylinders": 4.0, "displacement": 110.0, "weight": 2672.0} +test44_datsun_310_gx {"horsepower": 67.0, "acceleration": 16.2, "cylinders": 4.0, "displacement": 91.0, "weight": 1995.0} +test45_dodge_monaco_(sw) {"horsepower": 180.0, "acceleration": 11.5, "cylinders": 8.0, "displacement": 383.0, "weight": 4955.0} +test46_chevrolet_monza_2+2 {"horsepower": 110.0, "acceleration": 13.5, "cylinders": 8.0, "displacement": 262.0, "weight": 3221.0} +test47_capri_ii {"horsepower": 92.0, "acceleration": 14.9, "cylinders": 4.0, "displacement": 140.0, "weight": 2572.0} +test48_mazda_rx2_coupe {"horsepower": 97.0, "acceleration": 13.5, "cylinders": 3.0, "displacement": 70.0, "weight": 2330.0} +test49_plymouth_fury {"horsepower": 95.0, "acceleration": 19.0, "cylinders": 6.0, "displacement": 225.0, "weight": 3785.0} +test50_plymouth_fury_iii {"horsepower": 215.0, "acceleration": 8.5, "cylinders": 8.0, "displacement": 440.0, "weight": 4312.0} +test51_dodge_st._regis {"horsepower": 135.0, "acceleration": 15.2, "cylinders": 8.0, "displacement": 318.0, "weight": 3830.0} +test52_amc_spirit_dl {"horsepower": 80.0, "acceleration": 15.0, "cylinders": 4.0, "displacement": 121.0, "weight": 2670.0} +test53_peugeot_504_(sw) {"horsepower": 87.0, "acceleration": 19.5, "cylinders": 4.0, "displacement": 120.0, "weight": 2979.0} +test54_chevroelt_chevelle_malibu {"horsepower": 105.0, "acceleration": 18.5, "cylinders": 6.0, "displacement": 250.0, "weight": 3897.0} +test55_opel_1900 {"horsepower": 90.0, "acceleration": 14.0, "cylinders": 4.0, "displacement": 116.0, "weight": 2123.0} +test56_dodge_challenger_se {"horsepower": 170.0, "acceleration": 10.0, "cylinders": 8.0, "displacement": 383.0, "weight": 3563.0} +test57_vw_pickup {"horsepower": 52.0, "acceleration": 24.6, "cylinders": 4.0, "displacement": 97.0, "weight": 2130.0} +test58_peugeot_604sl {"horsepower": 133.0, "acceleration": 15.8, "cylinders": 6.0, "displacement": 163.0, "weight": 3410.0} +test59_mazda_glc_4 {"horsepower": 68.0, "acceleration": 16.0, "cylinders": 4.0, "displacement": 91.0, "weight": 1985.0} +test60_audi_4000 {"horsepower": 78.0, "acceleration": 15.8, "cylinders": 4.0, "displacement": 97.0, "weight": 2188.0} +test61_plymouth_duster {"horsepower": 95.0, "acceleration": 16.5, "cylinders": 6.0, "displacement": 198.0, "weight": 3102.0} +test62_dodge_magnum_xe {"horsepower": 140.0, "acceleration": 13.7, "cylinders": 8.0, "displacement": 318.0, "weight": 4080.0} +test63_buick_century_limited {"horsepower": 110.0, "acceleration": 16.4, "cylinders": 6.0, "displacement": 181.0, "weight": 2945.0} +test64_chevrolet_monte_carlo_s {"horsepower": 145.0, "acceleration": 13.0, "cylinders": 8.0, "displacement": 350.0, "weight": 4082.0} +test65_amc_matador {"horsepower": 150.0, "acceleration": 11.5, "cylinders": 8.0, "displacement": 304.0, "weight": 3672.0} +test66_honda_accord {"horsepower": 75.0, "acceleration": 14.5, "cylinders": 4.0, "displacement": 107.0, "weight": 2205.0} +test67_plymouth_volare {"horsepower": 100.0, "acceleration": 17.2, "cylinders": 6.0, "displacement": 225.0, "weight": 3430.0} +test68_ford_galaxie_500 {"horsepower": 198.0, "acceleration": 10.0, "cylinders": 8.0, "displacement": 429.0, "weight": 4341.0} +test69_chevrolet_citation {"horsepower": 110.0, "acceleration": 12.6, "cylinders": 6.0, "displacement": 173.0, "weight": 2725.0} +test70_amc_ambassador_sst {"horsepower": 150.0, "acceleration": 11.5, "cylinders": 8.0, "displacement": 304.0, "weight": 3672.0} +test71_ford_thunderbird {"horsepower": 149.0, "acceleration": 14.5, "cylinders": 8.0, "displacement": 351.0, "weight": 4335.0} +test72_pontiac_phoenix {"horsepower": 90.0, "acceleration": 13.2, "cylinders": 4.0, "displacement": 151.0, "weight": 2556.0} +test73_vw_rabbit {"horsepower": 76.0, "acceleration": 14.7, "cylinders": 4.0, "displacement": 98.0, "weight": 2144.0} +test74_bmw_2002 {"horsepower": 113.0, "acceleration": 12.5, "cylinders": 4.0, "displacement": 121.0, "weight": 2234.0} +test75_dodge_colt {"horsepower": 105.0, "acceleration": 14.4, "cylinders": 4.0, "displacement": 156.0, "weight": 2800.0} +test76_mercury_capri_2000 {"horsepower": 86.0, "acceleration": 14.0, "cylinders": 4.0, "displacement": 122.0, "weight": 2220.0} +test77_ford_galaxie_500 {"horsepower": 153.0, "acceleration": 13.5, "cylinders": 8.0, "displacement": 351.0, "weight": 4154.0} +test78_volkswagen_rabbit_custom_diesel {"horsepower": 48.0, "acceleration": 21.5, "cylinders": 4.0, "displacement": 90.0, "weight": 1985.0} +test79_dodge_aspen_se {"horsepower": 100.0, "acceleration": 17.7, "cylinders": 6.0, "displacement": 225.0, "weight": 3651.0} +test80_mazda_glc_deluxe {"horsepower": 52.0, "acceleration": 19.4, "cylinders": 4.0, "displacement": 78.0, "weight": 1985.0} +test81_mazda_glc_custom {"horsepower": 68.0, "acceleration": 17.6, "cylinders": 4.0, "displacement": 91.0, "weight": 1970.0} +test82_audi_100ls {"horsepower": 91.0, "acceleration": 14.0, "cylinders": 4.0, "displacement": 114.0, "weight": 2582.0} +test83_oldsmobile_delta_88_royale {"horsepower": 160.0, "acceleration": 13.5, "cylinders": 8.0, "displacement": 350.0, "weight": 4456.0} +test84_ford_gran_torino {"horsepower": 137.0, "acceleration": 14.5, "cylinders": 8.0, "displacement": 302.0, "weight": 4042.0} +test85_plymouth_cricket {"horsepower": 70.0, "acceleration": 20.5, "cylinders": 4.0, "displacement": 91.0, "weight": 1955.0} +test86_plymouth_fury_iii {"horsepower": 150.0, "acceleration": 13.0, "cylinders": 8.0, "displacement": 318.0, "weight": 4096.0} +test87_plymouth_horizon {"horsepower": 70.0, "acceleration": 13.2, "cylinders": 4.0, "displacement": 105.0, "weight": 2200.0} +test88_peugeot_504 {"horsepower": 88.0, "acceleration": 21.9, "cylinders": 4.0, "displacement": 120.0, "weight": 3270.0} +test89_dodge_dart_custom {"horsepower": 150.0, "acceleration": 11.0, "cylinders": 8.0, "displacement": 318.0, "weight": 3399.0} +test90_pontiac_j2000_se_hatchback {"horsepower": 85.0, "acceleration": 16.2, "cylinders": 4.0, "displacement": 112.0, "weight": 2575.0} +test91_toyota_starlet {"horsepower": 58.0, "acceleration": 16.9, "cylinders": 4.0, "displacement": 79.0, "weight": 1755.0} +test92_mazda_glc_custom_l {"horsepower": 68.0, "acceleration": 18.2, "cylinders": 4.0, "displacement": 91.0, "weight": 2025.0} +test93_fiat_124_tc {"horsepower": 75.0, "acceleration": 14.0, "cylinders": 4.0, "displacement": 116.0, "weight": 2246.0} diff --git a/creg/test_data/auto-mpg.testresp b/creg/test_data/auto-mpg.testresp new file mode 100644 index 00000000..4f2cad37 --- /dev/null +++ b/creg/test_data/auto-mpg.testresp @@ -0,0 +1,93 @@ +test1_fiat_124b 30.0 +test2_dodge_aspen 18.6 +test3_toyota_celica_gt_liftback 21.1 +test4_amc_matador 16.0 +test5_audi_5000s_(diesel) 36.4 +test6_datsun_310 37.2 +test7_chevrolet_woody 24.5 +test8_volkswagen_1131_deluxe_sedan 26.0 +test9_plymouth_satellite_sebring 18.0 +test10_amc_matador 15.5 +test11_chevrolet_chevette 29.0 +test12_buick_century_special 20.6 +test13_ford_escort_2h 29.9 +test14_ford_torino_500 19.0 +test15_dodge_aries_wagon_(sw) 25.8 +test16_plymouth_valiant 18.0 +test17_amc_pacer 19.0 +test18_honda_civic 24.0 +test19_ford_ltd 14.0 +test20_volkswagen_rabbit 29.0 +test21_honda_civic_1500_gl 44.6 +test22_chevrolet_impala 14.0 +test23_chevrolet_chevette 30.5 +test24_amc_concord 19.4 +test25_ford_pinto 23.0 +test26_ford_country_squire_(sw) 15.5 +test27_plymouth_valiant_custom 19.0 +test28_chevy_s-10 31.0 +test29_maxda_rx3 18.0 +test30_plymouth_sapporo 23.2 +test31_amc_hornet 22.5 +test32_chevrolet_caprice_classic 17.5 +test33_pontiac_sunbird_coupe 24.5 +test34_mercury_marquis_brougham 12.0 +test35_mercury_monarch_ghia 20.2 +test36_ford_country_squire_(sw) 13.0 +test37_audi_fox 29.0 +test38_triumph_tr7_coupe 35.0 +test39_dodge_d100 13.0 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3.0, "displacement": 70.0, "weight": 2420.0} +train26_datsun_210 {"horsepower": 65.0, "acceleration": 19.2, "cylinders": 4.0, "displacement": 85.0, "weight": 2110.0} +train27_vw_rabbit_c_(diesel) {"horsepower": 48.0, "acceleration": 21.7, "cylinders": 4.0, "displacement": 90.0, "weight": 2085.0} +train28_nissan_stanza_xe {"horsepower": 88.0, "acceleration": 14.5, "cylinders": 4.0, "displacement": 120.0, "weight": 2160.0} +train29_audi_5000 {"horsepower": 103.0, "acceleration": 15.9, "cylinders": 5.0, "displacement": 131.0, "weight": 2830.0} +train30_chevrolet_malibu {"horsepower": 145.0, "acceleration": 13.0, "cylinders": 8.0, "displacement": 350.0, "weight": 3988.0} +train31_mercury_capri_v6 {"horsepower": 107.0, "acceleration": 14.0, "cylinders": 6.0, "displacement": 155.0, "weight": 2472.0} +train32_datsun_b210_gx {"horsepower": 70.0, "acceleration": 18.6, "cylinders": 4.0, "displacement": 85.0, "weight": 2070.0} +train33_volkswagen_dasher {"horsepower": 67.0, "acceleration": 15.5, "cylinders": 4.0, "displacement": 79.0, "weight": 1963.0} +train34_volvo_145e_(sw) {"horsepower": 112.0, "acceleration": 14.5, "cylinders": 4.0, "displacement": 121.0, "weight": 2933.0} +train35_chrysler_lebaron_medallion {"horsepower": 92.0, "acceleration": 14.5, "cylinders": 4.0, "displacement": 156.0, "weight": 2585.0} +train36_pontiac_catalina {"horsepower": 170.0, "acceleration": 11.5, "cylinders": 8.0, "displacement": 400.0, "weight": 4668.0} +train37_toyota_tercel {"horsepower": 62.0, "acceleration": 17.3, "cylinders": 4.0, "displacement": 89.0, "weight": 2050.0} +train38_datsun_f-10_hatchback {"horsepower": 70.0, "acceleration": 16.8, "cylinders": 4.0, "displacement": 85.0, "weight": 1945.0} +train39_chrysler_lebaron_town_@_country_(sw) {"horsepower": 150.0, "acceleration": 13.0, "cylinders": 8.0, "displacement": 360.0, "weight": 3940.0} +train40_buick_century {"horsepower": 110.0, "acceleration": 15.8, "cylinders": 6.0, "displacement": 231.0, "weight": 3415.0} 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"displacement": 146.0, "weight": 2815.0} +train57_fiat_x1.9 {"horsepower": 67.0, "acceleration": 16.0, "cylinders": 4.0, "displacement": 79.0, "weight": 2000.0} +train58_mercury_zephyr {"horsepower": 85.0, "acceleration": 16.7, "cylinders": 6.0, "displacement": 200.0, "weight": 3070.0} +train59_toyota_corolla_1600_(sw) {"horsepower": 88.0, "acceleration": 16.5, "cylinders": 4.0, "displacement": 97.0, "weight": 2100.0} +train60_chevrolet_chevette {"horsepower": 68.0, "acceleration": 16.5, "cylinders": 4.0, "displacement": 98.0, "weight": 2155.0} +train61_toyota_cressida {"horsepower": 116.0, "acceleration": 12.6, "cylinders": 6.0, "displacement": 168.0, "weight": 2900.0} +train62_toyota_corolla {"horsepower": 70.0, "acceleration": 16.9, "cylinders": 4.0, "displacement": 108.0, "weight": 2245.0} +train63_datsun_710 {"horsepower": 97.0, "acceleration": 17.0, "cylinders": 4.0, "displacement": 119.0, "weight": 2545.0} +train64_mercury_grand_marquis {"horsepower": 138.0, "acceleration": 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"acceleration": 16.5, "cylinders": 4.0, "displacement": 122.0, "weight": 2226.0} +train73_chevrolet_monte_carlo_landau {"horsepower": 145.0, "acceleration": 13.2, "cylinders": 8.0, "displacement": 305.0, "weight": 3425.0} +train74_amc_concord_dl_6 {"horsepower": 90.0, "acceleration": 18.2, "cylinders": 6.0, "displacement": 232.0, "weight": 3265.0} +train75_pontiac_firebird {"horsepower": 100.0, "acceleration": 15.0, "cylinders": 6.0, "displacement": 250.0, "weight": 3282.0} +train76_chevrolet_cavalier_2-door {"horsepower": 88.0, "acceleration": 18.0, "cylinders": 4.0, "displacement": 112.0, "weight": 2395.0} +train77_mercedes-benz_280s {"horsepower": 120.0, "acceleration": 16.7, "cylinders": 6.0, "displacement": 168.0, "weight": 3820.0} +train78_dodge_d200 {"horsepower": 210.0, "acceleration": 13.5, "cylinders": 8.0, "displacement": 318.0, "weight": 4382.0} +train79_amc_hornet {"horsepower": 97.0, "acceleration": 15.5, "cylinders": 6.0, "displacement": 199.0, "weight": 2774.0} 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112.0, "weight": 2605.0} +train88_chevrolet_vega {"horsepower": 90.0, "acceleration": 19.5, "cylinders": 4.0, "displacement": 140.0, "weight": 2408.0} +train89_ford_torino {"horsepower": 140.0, "acceleration": 10.5, "cylinders": 8.0, "displacement": 302.0, "weight": 3449.0} +train90_chevrolet_chevelle_malibu {"horsepower": 130.0, "acceleration": 12.0, "cylinders": 8.0, "displacement": 307.0, "weight": 3504.0} +train91_toyota_corona {"horsepower": 52.0, "acceleration": 16.5, "cylinders": 4.0, "displacement": 76.0, "weight": 1649.0} +train92_buick_opel_isuzu_deluxe {"horsepower": 80.0, "acceleration": 14.8, "cylinders": 4.0, "displacement": 111.0, "weight": 2155.0} +train93_volvo_244dl {"horsepower": 98.0, "acceleration": 14.5, "cylinders": 4.0, "displacement": 121.0, "weight": 2945.0} +train94_opel_1900 {"horsepower": 81.0, "acceleration": 16.9, "cylinders": 4.0, "displacement": 116.0, "weight": 2220.0} +train95_peugeot_304 {"horsepower": 70.0, "acceleration": 19.5, "cylinders": 4.0, 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