| 78 | // ---------------------------------------------------------------------------------------- |
| 79 | |
| 80 | void run_prior_test() |
| 81 | { |
| 82 | print_spinner(); |
| 83 | typedef matrix<double,3,1> sample_type; |
| 84 | typedef linear_kernel<sample_type> kernel_type; |
| 85 | |
| 86 | svm_rank_trainer<kernel_type> trainer; |
| 87 | |
| 88 | ranking_pair<sample_type> data; |
| 89 | |
| 90 | sample_type samp; |
| 91 | samp = 0, 0, 1; data.relevant.push_back(samp); |
| 92 | samp = 0, 1, 0; data.nonrelevant.push_back(samp); |
| 93 | |
| 94 | trainer.set_c(10); |
| 95 | decision_function<kernel_type> df = trainer.train(data); |
| 96 | |
| 97 | trainer.set_prior(df); |
| 98 | |
| 99 | data.relevant.clear(); |
| 100 | data.nonrelevant.clear(); |
| 101 | samp = 1, 0, 0; data.relevant.push_back(samp); |
| 102 | samp = 0, 1, 0; data.nonrelevant.push_back(samp); |
| 103 | |
| 104 | df = trainer.train(data); |
| 105 | |
| 106 | dlog << LINFO << trans(df.basis_vectors(0)); |
| 107 | DLIB_TEST(df.basis_vectors(0)(0) > 0); |
| 108 | DLIB_TEST(df.basis_vectors(0)(1) < 0); |
| 109 | DLIB_TEST(df.basis_vectors(0)(2) > 0); |
| 110 | } |
| 111 | |
| 112 | // ---------------------------------------------------------------------------------------- |
| 113 |
no test coverage detected