Exemple #1
0
  // inference new model ~ getting data from a specified dataset
  public Model inference(LDADataset newData) {
    System.out.println("init new model");
    Model newModel = new Model();

    newModel.initNewModel(option, newData, trnModel);
    this.newModel = newModel;

    System.out.println("Sampling " + niters + " iteration for inference!");
    for (newModel.liter = 1; newModel.liter <= niters; newModel.liter++) {
      // System.out.println("Iteration " + newModel.liter + " ...");

      // for all newz_i
      for (int m = 0; m < newModel.M; ++m) {
        for (int n = 0; n < newModel.data.docs[m].length; n++) {
          // (newz_i = newz[m][n]
          // sample from p(z_i|z_-1,w)
          int topic = infSampling(m, n);
          newModel.z[m].set(n, topic);
        }
      } // end foreach new doc
    } // end iterations

    System.out.println("Gibbs sampling for inference completed!");

    computeNewTheta();
    computeNewPhi();
    newModel.liter--;
    return this.newModel;
  }
Exemple #2
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  // inference new model ~ getting dataset from file specified in option
  public Model inference() {
    System.out.println("inference - new");

    newModel = new Model();
    if (!newModel.initNewModel(option, trnModel)) return null;

    System.out.println("Sampling " + niters + " iteration for inference!");

    for (newModel.liter = 1; newModel.liter <= niters; newModel.liter++) {
      // System.out.println("Iteration " + newModel.liter + " ...");

      // for all newz_i
      for (int m = 0; m < newModel.M; ++m) {
        for (int n = 0; n < newModel.data.docs[m].length; n++) {
          // (newz_i = newz[m][n]
          // sample from p(z_i|z_-1,w)
          int topic = infSampling(m, n);
          newModel.z[m].set(n, topic);
        }
      } // end foreach new doc
    } // end iterations

    System.out.println("Gibbs sampling for inference completed!");
    System.out.println("Saving the inference outputs!");

    computeNewTheta();
    computeNewPhi();
    newModel.liter--;
    newModel.saveModel(newModel.dfile + "." + newModel.modelName);

    return newModel;
  }
Exemple #3
0
  // -----------------------------------------------------
  // Init method
  // -----------------------------------------------------
  public boolean init(LDACmdOption option) {
    this.option = option;
    trnModel = new Model();

    if (!trnModel.initEstimatedModel(option)) return false;

    globalDict = trnModel.data.localDict;
    computeTrnTheta();
    computeTrnPhi();

    return true;
  }