continue


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  1. #1
    Join Date
    Jan 2007
    Posts
    11

    continue

    public static void main(String[] args) {

    int[][] documents = { {1, 4, 3, 2, 3, 1, 4, 3, 2, 3, 1, 4, 3, 2, 3, 6},
    {2, 2, 4, 2, 4, 2, 2, 2, 2, 4, 2, 2},
    {1, 6, 5, 6, 0, 1, 6, 5, 6, 0, 1, 6, 5, 6, 0, 0},
    {5, 6, 6, 2, 3, 3, 6, 5, 6, 2, 2, 6, 5, 6, 6, 6, 0},
    {2, 2, 4, 4, 4, 4, 1, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 0},
    {5, 4, 2, 3, 4, 5, 6, 6, 5, 4, 3, 2}};
    // vocabulary
    int V = 7;
    int M = documents.length;
    // # topics
    int K = 2;
    // good values alpha = 2, beta = .5
    double alpha = 2;
    double beta = .5;

    System.out.println("Latent Dirichlet Allocation using Gibbs Sampling.");

    LdaGibbsSampler lda = new LdaGibbsSampler(documents, V);
    lda.configure(10000, 2000, 100, 10);
    lda.gibbs(K, alpha, beta);

    double[][] theta = lda.getTheta();
    double[][] phi = lda.getPhi();

    System.out.println();
    System.out.println();
    System.out.println("Document--Topic Associations, Theta[d][k] (alpha="
    + alpha + ")");
    System.out.print("d\\k\t");
    for (int m = 0; m < theta[0].length; m++) {
    System.out.print(" " + m % 10 + " ");
    }
    System.out.println();
    for (int m = 0; m < theta.length; m++) {
    System.out.print(m + "\t");
    for (int k = 0; k < theta[m].length; k++) {
    // System.out.print(theta[m][k] + " ");
    System.out.print(shadeDouble(theta[m][k], 1) + " ");
    }
    System.out.println();
    }
    System.out.println();
    System.out.println("Topic--Term Associations, Phi[k][w] (beta=" + beta
    + ")");

    System.out.print("k\\w\t");
    for (int w = 0; w < phi[0].length; w++) {
    System.out.print(" " + w % 10 + " ");
    }
    System.out.println();
    for (int k = 0; k < phi.length; k++) {
    System.out.print(k + "\t");
    for (int w = 0; w < phi[k].length; w++) {
    // System.out.print(phi[k][w] + " ");
    System.out.print(shadeDouble(phi[k][w], 1) + " ");
    }
    System.out.println();
    }
    }

    static String[] shades = {" ", ". ", ": ", ":. ", ":: ",
    "::. ", "::: ", ":::. ", ":::: ", "::::.", ":::::"};

    static NumberFormat lnf = new DecimalFormat("00E0");

    public static String shadeDouble(double d, double max) {
    int a = (int) Math.floor(d * 10 / max + 0.5);
    if (a > 10 || a < 0) {
    String x = lnf.format(d);
    a = 5 - x.length();
    for (int i = 0; i < a; i++) {
    x += " ";
    }
    return "<" + x + ">";
    }
    return "[" + shades[a] + "]";
    }
    }

  2. #2
    Join Date
    Dec 2004
    Location
    San Bernardino County, California
    Posts
    1,468
    And, what does, or doesn't, happen when you do something with this code?

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