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-rw-r--r--ml/dlib/dlib/test/probabilistic.cpp123
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diff --git a/ml/dlib/dlib/test/probabilistic.cpp b/ml/dlib/dlib/test/probabilistic.cpp
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-// Copyright (C) 2011 Davis E. King (davis@dlib.net)
-// License: Boost Software License See LICENSE.txt for the full license.
-
-
-#include <dlib/matrix.h>
-#include <sstream>
-#include <string>
-#include <cstdlib>
-#include <ctime>
-#include <vector>
-#include "../stl_checked.h"
-#include "../array.h"
-#include "../rand.h"
-#include "checkerboard.h"
-#include <dlib/statistics.h>
-
-#include "tester.h"
-#include <dlib/svm_threaded.h>
-
-
-namespace
-{
-
- using namespace test;
- using namespace dlib;
- using namespace std;
-
- logger dlog("test.probabilistic");
-
-// ----------------------------------------------------------------------------------------
-
- class test_probabilistic : public tester
- {
- public:
- test_probabilistic (
- ) :
- tester ("test_probabilistic",
- "Runs tests on the probabilistic trainer adapter.")
- {}
-
- void perform_test (
- )
- {
- print_spinner();
-
-
- typedef double scalar_type;
- typedef matrix<scalar_type,2,1> sample_type;
-
- std::vector<sample_type> x;
- std::vector<matrix<double,0,1> > x_linearized;
- std::vector<scalar_type> y;
-
- get_checkerboard_problem(x,y, 1000, 2);
-
- random_subset_selector<sample_type> rx;
- random_subset_selector<scalar_type> ry;
- rx.set_max_size(x.size());
- ry.set_max_size(x.size());
-
- dlog << LINFO << "pos labels: "<< sum(mat(y) == +1);
- dlog << LINFO << "neg labels: "<< sum(mat(y) == -1);
-
- for (unsigned long i = 0; i < x.size(); ++i)
- {
- rx.add(x[i]);
- ry.add(y[i]);
- }
-
- const scalar_type gamma = 2.0;
-
- typedef radial_basis_kernel<sample_type> kernel_type;
-
- krr_trainer<kernel_type> krr_trainer;
- krr_trainer.use_classification_loss_for_loo_cv();
- krr_trainer.set_kernel(kernel_type(gamma));
- krr_trainer.set_basis(randomly_subsample(x, 100));
- probabilistic_decision_function<kernel_type> df;
-
- dlog << LINFO << "cross validation: " << cross_validate_trainer(krr_trainer, rx,ry, 4);
- print_spinner();
-
- running_stats<scalar_type> rs_pos, rs_neg;
-
- print_spinner();
- df = probabilistic(krr_trainer,3).train(x, y);
- for (unsigned long i = 0; i < x.size(); ++i)
- {
- if (y[i] > 0)
- rs_pos.add(df(x[i]));
- else
- rs_neg.add(df(x[i]));
- }
- dlog << LINFO << "rs_pos.mean(): "<< rs_pos.mean();
- dlog << LINFO << "rs_neg.mean(): "<< rs_neg.mean();
- DLIB_TEST_MSG(rs_pos.mean() > 0.95, rs_pos.mean());
- DLIB_TEST_MSG(rs_neg.mean() < 0.05, rs_neg.mean());
- rs_pos.clear();
- rs_neg.clear();
-
-
- print_spinner();
- df = probabilistic(krr_trainer,3).train(rx, ry);
- for (unsigned long i = 0; i < x.size(); ++i)
- {
- if (y[i] > 0)
- rs_pos.add(df(x[i]));
- else
- rs_neg.add(df(x[i]));
- }
- dlog << LINFO << "rs_pos.mean(): "<< rs_pos.mean();
- dlog << LINFO << "rs_neg.mean(): "<< rs_neg.mean();
- DLIB_TEST_MSG(rs_pos.mean() > 0.95, rs_pos.mean());
- DLIB_TEST_MSG(rs_neg.mean() < 0.05, rs_neg.mean());
- rs_pos.clear();
- rs_neg.clear();
-
- }
- } a;
-
-}
-
-