Examples with ExpressionsBasedModel org.ojalgo.optimisation.ExpressionsBasedModel used on opensource projects

Example 36 with ExpressionsBasedModel

use of org.ojalgo.optimisation.ExpressionsBasedModel in project ojAlgo by optimatika.

the class MarketShareCase method testMipButLinearConstrainedToOptimal.

@Test
@Disabled("Underscored before JUnit 5")
public void testMipButLinearConstrainedToOptimal() {
    final ExpressionsBasedModel tmpModel = MarketShareCase.makeModel();
    for (final Variable tmpVariable : tmpModel.getVariables()) {
        final String tmpName = tmpVariable.getName();
        if (tmpName.startsWith("s")) {
            tmpVariable.level(SOLUTION.get(tmpName));
        }
    }
    final Result tmpResult = tmpModel.minimise();
    TestUtils.assertEquals("OBJECTIVE_MIP", OBJECTIVE_MIP.doubleValue(), tmpResult.getValue(), 1E-14 / PrimitiveMath.THREE);
    for (final Variable tmpVariable : tmpModel.getVariables()) {
        TestUtils.assertEquals(tmpVariable.getName(), SOLUTION.get(tmpVariable.getName()).doubleValue(), tmpVariable.getValue().doubleValue(), 1E-14 / PrimitiveMath.THREE);
    }
}

Example 37 with ExpressionsBasedModel

use of org.ojalgo.optimisation.ExpressionsBasedModel in project ojAlgo by optimatika.

the class MarketShareCase method testRelaxedButIntegerConstrainedToOptimal.

@Test
public void testRelaxedButIntegerConstrainedToOptimal() {
    final ExpressionsBasedModel tmpModel = MarketShareCase.makeModel();
    tmpModel.relax(true);
    for (final Variable tmpVariable : tmpModel.getVariables()) {
        final String tmpName = tmpVariable.getName();
        if (tmpName.startsWith("x")) {
            tmpVariable.level(SOLUTION.get(tmpName));
        }
    }
    final Result tmpResult = tmpModel.minimise();
    TestUtils.assertEquals("OBJECTIVE_MIP", OBJECTIVE_MIP.doubleValue(), tmpResult.getValue(), 1E-14 / PrimitiveMath.THREE);
    for (final Variable tmpVariable : tmpModel.getVariables()) {
        TestUtils.assertEquals(tmpVariable.getName(), SOLUTION.get(tmpVariable.getName()).doubleValue(), tmpVariable.getValue().doubleValue(), 1E-14 / PrimitiveMath.THREE);
    }
}

Example 38 with ExpressionsBasedModel

use of org.ojalgo.optimisation.ExpressionsBasedModel in project ojAlgo by optimatika.

the class MarketShareCase method testMipButSomeConstainedToOptimatl.

@Test
public void testMipButSomeConstainedToOptimatl() {
    final ExpressionsBasedModel tmpModel = MarketShareCase.makeModel();
    // tmpModel.options.debug(IntegerSolver.class);
    // 37, 20
    final int tmpConstrLimit = 20;
    int tmpConstrCount = 0;
    for (final Variable tmpVariable : tmpModel.getVariables()) {
        final String tmpName = tmpVariable.getName();
        if (tmpConstrCount < tmpConstrLimit) {
            tmpVariable.level(SOLUTION.get(tmpName));
            tmpConstrCount++;
        }
    }
    final Result tmpResult = tmpModel.minimise();
    TestUtils.assertStateNotLessThanOptimal(tmpResult);
    TestUtils.assertTrue(tmpModel.validate(tmpModel.options.feasibility));
    TestUtils.assertTrue(tmpModel.validate(tmpResult, tmpModel.options.feasibility));
    TestUtils.assertEquals("OBJECTIVE_MIP", OBJECTIVE_MIP.doubleValue(), tmpResult.getValue(), tmpModel.options.feasibility);
    final NumberContext tmpContext = tmpModel.options.solution.newScale(13);
    for (final Variable tmpVariable : tmpModel.getVariables()) {
        final String tmpName = tmpVariable.getName();
        final double tmpExpected = SOLUTION.get(tmpName).doubleValue();
        final double tmpActual = tmpVariable.getValue().doubleValue();
        TestUtils.assertEquals(tmpName, tmpExpected, tmpActual, tmpContext);
    }
}

Example 39 with ExpressionsBasedModel

use of org.ojalgo.optimisation.ExpressionsBasedModel in project ojAlgo by optimatika.

the class MarketShareCase method testRelaxedButAllConstrainedToOptimal.

@Test
public void testRelaxedButAllConstrainedToOptimal() {
    final ExpressionsBasedModel tmpModel = MarketShareCase.makeModel();
    tmpModel.relax(true);
    for (final Variable tmpVariable : tmpModel.getVariables()) {
        tmpVariable.level(SOLUTION.get(tmpVariable.getName()));
    }
    final Result tmpResult = tmpModel.minimise();
    TestUtils.assertEquals("OBJECTIVE_MIP", OBJECTIVE_MIP.doubleValue(), tmpResult.getValue(), 1E-14 / PrimitiveMath.THREE);
    for (final Variable tmpVariable : tmpModel.getVariables()) {
        TestUtils.assertEquals(tmpVariable.getName(), SOLUTION.get(tmpVariable.getName()).doubleValue(), tmpVariable.getValue().doubleValue(), 1E-14 / PrimitiveMath.THREE);
    }
}

Example 40 with ExpressionsBasedModel

use of org.ojalgo.optimisation.ExpressionsBasedModel in project ojAlgo by optimatika.

the class MarketShareCase method testFullMIP.

@Test
@Disabled("Underscored before JUnit 5")
public void testFullMIP() {
    final ExpressionsBasedModel tmpModel = MarketShareCase.makeModel();
    // tmpModel.options.debug_stream = BasicLogger.DEBUG;
    // tmpModel.options.debug_solver = IntegerSolver.class;
    // tmpModel.options.validate = true;
    final Result tmpResult = tmpModel.minimise();
    TestUtils.assertEquals("OBJECTIVE_MIP", OBJECTIVE_MIP.doubleValue(), tmpResult.getValue(), 1E-14 / PrimitiveMath.THREE);
    for (final Variable tmpVariable : tmpModel.getVariables()) {
        TestUtils.assertEquals(tmpVariable.getName(), SOLUTION.get(tmpVariable.getName()).doubleValue(), tmpVariable.getValue().doubleValue(), 1E-14 / PrimitiveMath.THREE);
    }
}