Examples with Node edu.cmu.tetrad.graph.Node used on opensource projects

Example 71 with Node

use of edu.cmu.tetrad.graph.Node in project tetrad by cmu-phil.

the class IndTestCramerT method getVariableNames.

/**
 * @return the list of variable names
 */
public List<String> getVariableNames() {
    List<Node> variables = getVariables();
    List<String> variableNames = new ArrayList<>();
    for (Node variable : variables) {
        variableNames.add(variable.getName());
    }
    return variableNames;
}

Example 72 with Node

use of edu.cmu.tetrad.graph.Node in project tetrad by cmu-phil.

the class IndTestFisherZPercentIndependent method getVariableNames.

/**
 * @return the list of variable varNames.
 */
public List<String> getVariableNames() {
    List<Node> variables = getVariables();
    List<String> variableNames = new ArrayList<>();
    for (Node variable1 : variables) {
        variableNames.add(variable1.getName());
    }
    return variableNames;
}

Example 73 with Node

use of edu.cmu.tetrad.graph.Node in project tetrad by cmu-phil.

the class IndTestGSquare method getVariableNames.

/**
 * @return the list of variable varNames.
 */
public List<String> getVariableNames() {
    List<Node> variables = getVariables();
    List<String> variableNames = new ArrayList<>();
    for (Node variable1 : variables) {
        variableNames.add(variable1.getName());
    }
    return variableNames;
}

Example 74 with Node

use of edu.cmu.tetrad.graph.Node in project tetrad by cmu-phil.

the class IndTestGSquare method isIndependent.

/**
 * Determines whether variable x is independent of variable y given a list of conditioning varNames z.
 *
 * @param x the one variable being compared.
 * @param y the second variable being compared.
 * @param z the list of conditioning varNames.
 * @return true iff x _||_ y | z.
 */
public boolean isIndependent(Node x, Node y, List<Node> z) {
    if (x == null) {
        throw new NullPointerException();
    }
    if (y == null) {
        throw new NullPointerException();
    }
    if (z == null) {
        throw new NullPointerException();
    }
    for (Node node : z) {
        if (node == null) {
            throw new NullPointerException();
        }
    }
    // For testing x, y given z1,...,zn, set up an array of length
    // n + 2 containing the indices of these variables in order.
    int[] testIndices = new int[2 + z.size()];
    testIndices[0] = variables.indexOf(x);
    testIndices[1] = variables.indexOf(y);
    for (int i = 0; i < z.size(); i++) {
        testIndices[i + 2] = variables.indexOf(z.get(i));
    }
    // the following is lame code--need a better test
    for (int i = 0; i < testIndices.length; i++) {
        if (testIndices[i] < 0) {
            throw new IllegalArgumentException("Variable " + i + " was not used in the constructor.");
        }
    }
    // System.out.println("Testing " + x + " _||_ " + y + " | " + z);
    GSquareTest.Result result = gSquareTest.calcGSquare(testIndices);
    this.gSquare = result.getGSquare();
    this.pValue = result.getPValue();
    if (result.isIndep()) {
        StringBuilder sb = new StringBuilder();
        sb.append("INDEPENDENCE ACCEPTED: ");
        sb.append(SearchLogUtils.independenceFact(x, y, z));
        sb.append("\tp = ").append(nf.format(result.getPValue())).append("\tg^2 = ").append(nf.format(result.getGSquare())).append("\tdf = ").append(result.getDf());
        TetradLogger.getInstance().log("independencies", sb.toString());
    } else {
        StringBuilder sb = new StringBuilder();
        sb.append("Not independent: ");
        sb.append(SearchLogUtils.independenceFact(x, y, z));
        sb.append("\tp = ").append(nf.format(result.getPValue())).append("\tg^2 = ").append(nf.format(result.getGSquare())).append("\tdf = ").append(result.getDf());
        TetradLogger.getInstance().log("independencies", sb.toString());
    }
    return result.isIndep();
}

Example 75 with Node

use of edu.cmu.tetrad.graph.Node in project tetrad by cmu-phil.

the class IndTestMulti method getVariableNames.

/**
 * @return the list of variable varNames.
 */
public List<String> getVariableNames() {
    List<Node> variables = getVariables();
    List<String> variableNames = new ArrayList<>();
    for (Node variable1 : variables) {
        variableNames.add(variable1.getName());
    }
    return variableNames;
}