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Logistic Regression MLPACK.
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| // logistic_regression_test.cpp Lines[504-512] | |
| // Very simple fake dataset. | |
| arma::mat data("1 2 3;" | |
| "1 2 3"); | |
| arma::Row<size_t> responses("1 1 0"); | |
| // Create a logistic regression object using a custom SGD object with a much | |
| // smaller tolerance. | |
| LogisticRegressionFunction<> lrf(data, responses, 0.001); | |
| StandardSGD<LogisticRegressionFunction<>> sgd(lrf, 0.005, 500000, 1e-10); | |
| LogisticRegression<> lr(sgd); | |
| // Tried the following, but all of them resulted in errors. | |
| LogisticRegression<StandardSGD> lr(sgd); | |
| LogisticRegression<StandardSGD<>> lr(sgd); | |
| LogisticRegression<StandardSGD<LogisticRegressionFunction>> lr(sgd); | |
| //----------------------------------------------------------------------- | |
| // Errors. | |
| // With CLANG: | |
| /home/arun/src/mlpack/mlpack/src/mlpack/tests/logistic_regression_test.cpp:512:24: error: no matching constructor for initialization of 'LogisticRegression<>' | |
| LogisticRegression<> lr(sgd); | |
| ^ ~~~ | |
| /home/arun/src/mlpack/mlpack/src/mlpack/../mlpack/methods/logistic_regression/logistic_regression.hpp:34:7: note: candidate constructor (the implicit move constructor) not viable: no known conversion from 'StandardSGD<LogisticRegressionFunction<> >' (aka 'mlpack::optimization::SGD<mlpack::regression::LogisticRegressionFunction<arma::Mat<double> >, mlpack::optimization::EmptyUpdate>') to 'mlpack::regression::LogisticRegression<arma::Mat<double> >' for 1st argument | |
| class LogisticRegression | |
| ^ | |
| /home/arun/src/mlpack/mlpack/src/mlpack/../mlpack/methods/logistic_regression/logistic_regression.hpp:34:7: note: candidate constructor (the implicit copy constructor) not viable: no known conversion from 'StandardSGD<LogisticRegressionFunction<> >' (aka 'mlpack::optimization::SGD<mlpack::regression::LogisticRegressionFunction<arma::Mat<double> >, mlpack::optimization::EmptyUpdate>') to 'const mlpack::regression::LogisticRegression<arma::Mat<double> >' for 1st argument | |
| /home/arun/src/mlpack/mlpack/src/mlpack/../mlpack/methods/logistic_regression/logistic_regression.hpp:87:3: note: candidate constructor not viable: no known conversion from 'StandardSGD<LogisticRegressionFunction<> >' (aka 'mlpack::optimization::SGD<mlpack::regression::LogisticRegressionFunction<arma::Mat<double> >, mlpack::optimization::EmptyUpdate>') to 'const size_t' (aka 'const unsigned long') for 1st argument | |
| LogisticRegression(const size_t dimensionality = 0, | |
| ^ | |
| /home/arun/src/mlpack/mlpack/src/mlpack/../mlpack/methods/logistic_regression/logistic_regression.hpp:102:3: note: candidate template ignored: substitution failure : template template argument has different template parameters than its corresponding template template parameter | |
| LogisticRegression( | |
| ^ | |
| /home/arun/src/mlpack/mlpack/src/mlpack/../mlpack/methods/logistic_regression/logistic_regression.hpp:52:3: note: candidate constructor not viable: requires at least 2 arguments, but 1 was provided | |
| LogisticRegression(const MatType& predictors, | |
| ^ | |
| /home/arun/src/mlpack/mlpack/src/mlpack/../mlpack/methods/logistic_regression/logistic_regression.hpp:72:3: note: candidate constructor not viable: requires at least 3 arguments, but 1 was provided | |
| LogisticRegression(const MatType& predictors, | |
| ^ | |
| //---------------------------------------------------- | |
| // With | |
| LogisticRegression<StandardSGD<LogisticRegressionFunction<> >> lr(sgd); | |
| /home/arun/src/mlpack/mlpack/src/mlpack/tests/logistic_regression_test.cpp:512:66: error: no matching constructor for initialization of 'LogisticRegression<StandardSGD<LogisticRegressionFunction<> > >' (aka 'LogisticRegression<mlpack::optimization::SGD<mlpack::regression::LogisticRegressionFunction<arma::Mat<double> >, mlpack::optimization::EmptyUpdate> >') | |
| LogisticRegression<StandardSGD<LogisticRegressionFunction<> >> lr(sgd); | |
| ^ ~~~ | |
| /home/arun/src/mlpack/mlpack/src/mlpack/../mlpack/methods/logistic_regression/logistic_regression.hpp:34:7: note: candidate constructor (the implicit move constructor) not viable: no known conversion from 'StandardSGD<LogisticRegressionFunction<> >' (aka 'mlpack::optimization::SGD<mlpack::regression::LogisticRegressionFunction<arma::Mat<double> >, mlpack::optimization::EmptyUpdate>') to 'mlpack::regression::LogisticRegression<mlpack::optimization::SGD<mlpack::regression::LogisticRegressionFunction<arma::Mat<double> >, mlpack::optimization::EmptyUpdate> >' for 1st argument | |
| class LogisticRegression | |
| ^ | |
| /home/arun/src/mlpack/mlpack/src/mlpack/../mlpack/methods/logistic_regression/logistic_regression.hpp:34:7: note: candidate constructor (the implicit copy constructor) not viable: no known conversion from 'StandardSGD<LogisticRegressionFunction<> >' (aka 'mlpack::optimization::SGD<mlpack::regression::LogisticRegressionFunction<arma::Mat<double> >, mlpack::optimization::EmptyUpdate>') to 'const mlpack::regression::LogisticRegression<mlpack::optimization::SGD<mlpack::regression::LogisticRegressionFunction<arma::Mat<double> >, mlpack::optimization::EmptyUpdate> >' for 1st argument | |
| /home/arun/src/mlpack/mlpack/src/mlpack/../mlpack/methods/logistic_regression/logistic_regression.hpp:87:3: note: candidate constructor not viable: no known conversion from 'StandardSGD<LogisticRegressionFunction<> >' (aka 'mlpack::optimization::SGD<mlpack::regression::LogisticRegressionFunction<arma::Mat<double> >, mlpack::optimization::EmptyUpdate>') to 'const size_t' (aka 'const unsigned long') for 1st argument | |
| LogisticRegression(const size_t dimensionality = 0, | |
| ^ | |
| /home/arun/src/mlpack/mlpack/src/mlpack/../mlpack/methods/logistic_regression/logistic_regression.hpp:102:3: note: candidate template ignored: could not match 'LogisticRegressionFunction<mlpack::optimization::SGD<mlpack::regression::LogisticRegressionFunction<arma::Mat<double> >, mlpack::optimization::EmptyUpdate>>' against 'LogisticRegressionFunction<arma::Mat<double>>' | |
| LogisticRegression( | |
| ^ | |
| /home/arun/src/mlpack/mlpack/src/mlpack/../mlpack/methods/logistic_regression/logistic_regression.hpp:52:3: note: candidate constructor not viable: requires at least 2 arguments, but 1 was provided | |
| LogisticRegression(const MatType& predictors, | |
| ^ | |
| /home/arun/src/mlpack/mlpack/src/mlpack/../mlpack/methods/logistic_regression/logistic_regression.hpp:72:3: note: candidate constructor not viable: requires at least 3 arguments, but 1 was provided | |
| LogisticRegression(const MatType& predictors, | |
| ^ |
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