Method test_equal_error_rate

dlib/test/statistics.cpp:808–840

        }

        void test_equal_error_rate() 
        {
            auto result = equal_error_rate({}, {});
            DLIB_TEST(result.first == 0);
            DLIB_TEST(result.second == 0);

            // no error case
            result = equal_error_rate({1,1,1}, {2,2,2});
            DLIB_TEST_MSG(result.first == 0, result.first);
            DLIB_TEST_MSG(result.second == 2, result.second);

            // max error case
            result = equal_error_rate({2,2,2}, {1,1,1});
            DLIB_TEST_MSG(result.first == 1, result.first);
            DLIB_TEST_MSG(result.second == 2, result.second);
            // Another way to have max error
            result = equal_error_rate({1,1,1}, {1,1,1});
            DLIB_TEST_MSG(result.second == 1, result.second);
            DLIB_TEST_MSG(result.first == 1, result.first);

            // wildly unbalanced  
            result = equal_error_rate({}, {1,1,1});
            DLIB_TEST_MSG(result.first == 0, result.first);

            // wildly unbalanced  
            result = equal_error_rate({1,1,1}, {});
            DLIB_TEST_MSG(result.first == 0, result.first);

            // 25% error case   
            result = equal_error_rate({1,1,1,3}, {2, 2, 0, 2});
            DLIB_TEST_MSG(result.first == 0.25, result.first);
            DLIB_TEST_MSG(result.second == 2, result.second);
        }

        void test_running_stats_decayed()
        {