Examples with IntegerVariable choco.kernel.model.variables.integer.IntegerVariable used on opensource projects

Example 21 with IntegerVariable

use of choco.kernel.model.variables.integer.IntegerVariable in project abstools by abstools.

the class ChocoSolver method checkSolutionWithErrors.

// public boolean checkSolution(Map<String,Integer> solution, Model model) {
// boolean res = true;
// for (Constraint c: constraints) {
// CPModel m = new CPModel();
// m.addConstraint(c);
// boolean csol = checkSolution(solution,model,m);
// res = res & csol;
// //if (debug)
// if (!csol) ast.println("Constraint failed: "+prettyConst(c));
// }
// 
// return res;
// for (Constraint c: constraints)
// m.addConstraint(c);
// return checkSolution(solution,model,m);
// }
public List<String> checkSolutionWithErrors(Map<String, Integer> solution, Model model) {
    List<String> res = new ArrayList<>();
    // check first for limits of variables
    for (IntegerVariable v : vars.values()) {
        CPModel m = new CPModel();
        m.addVariable(v);
        if (!checkSolution(solution, model, m))
            res.add(v.toString());
    }
    // now check all explicit constraints
    for (Constraint c : constraints) {
        CPModel m = new CPModel();
        m.addConstraint(c);
        if (!checkSolution(solution, model, m))
            res.add(prettyConst(c));
    }
    return res;
}

Example 22 with IntegerVariable

use of choco.kernel.model.variables.integer.IntegerVariable in project abstools by abstools.

the class ChocoSolver method addIntVar.

public void addIntVar(String name) {
    IntegerVariable v = Choco.makeIntVar(name);
    vars.put(name, v);
    defaultvals.put(name, 0);
    if (absmodel.debug)
        absmodel.println("  adding Int var '" + name + "' (default -> 0)");
// m.addVariable(v); // not needed - if variable is not constrained in
// any way, it should not be considered when solving.
}

Example 23 with IntegerVariable

use of choco.kernel.model.variables.integer.IntegerVariable in project abstools by abstools.

the class ChocoSolver method checkSolution.

public boolean checkSolution(Map<String, Integer> solution, Model model, CPModel m) {
    // Read the model
    CPSolver s = new CPSolver();
    s.read(m);
    if (absmodel.debug)
        absmodel.println("solution to check:\n" + solution);
    // HashMap<String,Integer> selection = new HashMap<String,Integer>();
    Iterator<IntegerVariable> it = m.getIntVarIterator();
    try {
        // aux variables
        int val;
        Set<String> newFeatures = new HashSet<>();
        Set<String> newParents = new HashSet<>();
        if (absmodel.debug)
            absmodel.println("Adding new values:");
        while (it.hasNext()) {
            // for all variables in the constraints
            // (model): round 1
            IntegerVariable var = it.next();
            // IF used variable is present in the solution, update it!
            if (solution.containsKey(var.getName())) {
                val = solution.get(var.getName());
                if (absmodel.debug)
                    absmodel.println("  " + var + " -> " + val);
                s.getVar(var).setVal(val);
                // Possible feature name -- include later the parents.
                if (val == 1)
                    newFeatures.add(var.getName());
            }
        }
        // constraints (model)
        for (Map.Entry<String, Integer> entry : solution.entrySet()) {
            if (entry.getValue() == 1)
                if (!entry.getKey().contains("."))
                    newFeatures.add(entry.getKey());
        }
        // collect parents of 'newFeatures'
        if (model != null)
            model.collectParents(newFeatures, newParents);
        // add newParents and default values to the solution
        it = m.getIntVarIterator();
        while (it.hasNext()) {
            // for all variables in the constraints
            // (model): round 2
            IntegerVariable var = it.next();
            // If it is a parent to include, set
            if (newParents.contains(var.getName())) {
                if (absmodel.debug)
                    absmodel.println("  " + var + " (parent) -> 1");
                s.getVar(var).setVal(1);
            } else // ELSE use default value
            if (!solution.containsKey(var.getName())) {
                // By default, the optional wrapper "$..." is ALWAYS true
                if (var.getName().startsWith("$")) {
                    if (absmodel.debug)
                        absmodel.println("  " + var + " (default) -> 1");
                    s.getVar(var).setVal(1);
                // By default, unrefered features & attributes are false
                } else if (defaultvals.containsKey(var.getName())) {
                    int defval = defaultvals.get(var.getName());
                    if (absmodel.debug)
                        absmodel.println("  " + var.getName() + " (default) -> " + defval);
                    s.getVar(var).setVal(defval);
                } else {
                    if (absmodel.debug)
                        absmodel.println("  " + var.getName() + " (default) -> 0");
                    s.getVar(var).setVal(0);
                }
            }
        }
    } catch (ContradictionException e1) {
        if (absmodel.debug)
            System.err.println("$$$ Contradiction found... $$$");
    }// Catch-all
     catch (Exception e1) {
        // Catch-all
        if (absmodel.debug) {
            System.err.println("$$$ Failed to check solution... $$$");
            e1.printStackTrace();
        }
    }
    return s.checkSolution();
}

Example 24 with IntegerVariable

use of choco.kernel.model.variables.integer.IntegerVariable in project abstools by abstools.

the class ChocoSolver method addIntVar.

public void addIntVar(String name, int fromto, boolean from) {
    IntegerVariable v = Choco.makeIntVar(name);
    if (from)
        addConstraint(Choco.geq(v, fromto));
    else
        addConstraint(Choco.leq(v, fromto));
    vars.put(name, v);
    defaultvals.put(name, fromto);
    if (absmodel.debug)
        absmodel.println("  adding Int var '" + name + "' (default -> " + fromto + ")");
// m.addVariable(v); // not needed, since v is used in the constraints
}

Example 25 with IntegerVariable

use of choco.kernel.model.variables.integer.IntegerVariable in project abstools by abstools.

the class ChocoSolverExperiment method main.

@SuppressWarnings("unused")
public static void main(final String[] args) throws Exception {
    CPModel m = new CPModel();
    boolean verbose = false;
    if (!verbose)
        ChocoLogging.setVerbosity(Verbosity.OFF);
    // m.addVariable(i1);
    IntegerVariable i1 = Choco.makeIntVar("i1", -10, 100);
    // m.addVariable(i2);
    IntegerVariable i2 = Choco.makeIntVar("i2", -10, 100);
    // m.addVariable(i3);
    IntegerVariable i3 = Choco.makeIntVar("i3", -10, 100);
    // m.addVariable(i4);
    IntegerVariable i4 = Choco.makeIntVar("i4", -10, 100);
    // m.addVariable(b1);
    IntegerVariable b1 = Choco.makeBooleanVar("b1");
    // m.addVariable(b2);
    IntegerVariable b2 = Choco.makeBooleanVar("b2");
    // m.addVariable(b3);
    IntegerVariable b3 = Choco.makeBooleanVar("b3");
    // m.addVariable(b4);
    IntegerVariable b4 = Choco.makeBooleanVar("b4");
    // m.addVariable(b5);
    IntegerVariable b5 = Choco.makeBooleanVar("b5");
    m.addConstraint(// Choco.and( Choco.lt(i1, i2) , Choco.lt(i2, 7) )
    Choco.or(Choco.eq(i1, -3), Choco.eq(i1, 5)));
    // Build the solver
    CPSolver s = new CPSolver();
    if (verbose)
        System.out.println("####" + s.getConfiguration().stringPropertyNames());
    // print the problem
    if (verbose)
        System.out.println(m.pretty());
    // Read the model
    s.read(m);
    // Solve the model
    // s.solve();
    // s.setObjective(s.getVar(i1))
    // s.solve(); //
    Boolean solved = s.maximize(s.getVar(i1), true);
    if (solved) {
        System.out.println("i1: " + s.getVar(i1).getVal());
    // System.out.println("i2: "+s.getVar(i2).getVal());
    } else {
        System.out.println("no sol...");
    }
    try {
    // s.getVar(b1).setVal(1);
    // //      s.getVar(b2).setVal(0);
    // //      s.getVar(b3).setVal(1);
    // System.out.println("$$$ check sol: "+s.checkSolution()+" $$$");
    // System.out.println("$$$ b1: "+s.getVar(b1).isInstantiated()+" $$$");
    // System.out.println("$$$ b2: "+s.getVar(b2).isInstantiated()+" $$$");
    } catch (Exception e1) {
        // Catch-all
        System.err.println("$$$ Failed to check solution... $$$");
    // e1.printStackTrace();
    }
    if (verbose)
        System.out.println(s.pretty());
}