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[test/regression] Add a logistic test

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Léa Saviot
2019-11-21 11:26:50 +01:00
parent a8ead6b66e
commit 4e6378fe18
1 changed files with 13 additions and 6 deletions
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19
apps/regression/test/model.cpp
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@@ -99,11 +99,18 @@ QUIZ_CASE(power_regression) {
// No case for trigonometric regression, because it has no unique solution
/* This data was generated without the random error, otherwise it did not pass
* the test. */
QUIZ_CASE(logistic_regression) {
double x[] = {2.3, 5.6, 1.1, 4.3};
double y[] = {3.948, 4.694, 2.184, 4.656};
double coefficients[] = {6, 1.5, 4.7};
assert_regression_is(x, y, 4, Model::Type::Logistic, coefficients);
/* This data was generated without the random error, otherwise it did not pass
* the test. */
double x1[] = {2.3, 5.6, 1.1, 4.3};
double y1[] = {3.948, 4.694, 2.184, 4.656};
double coefficients1[] = {6, 1.5, 4.7};
assert_regression_is(x1, y1, 4, Model::Type::Logistic, coefficients1);
// This data produced a wrong fit before
double x2[] = {0.0, 1.0, 2.0, 3.0, 4.0, 5.0, 6.0, 7.0, 8.0, 9.0};
double y2[] = {5.0, 9.0, 40.0, 64.0, 144.0, 200.0, 269.0, 278.0, 290.0, 295.0};
double coefficients2[] = {64.9, 1.0, 297.4};
assert_regression_is(x2, y2, 10, Model::Type::Logistic, coefficients2);
}