No

[chintucs]

Hi Everyone,
I am trying to run this programme but i am getting error of No
NoClassDefFoundError. I have checked the class path and i created a file in the same folder with main method. it is working. But this program is not working.

package org.knowceans;
import java.text.DecimalFormat;
import java.text.NumberFormat;
public class LdaGibbsSampler {
int[][] documents;
int V;
int K;
double alpha;

double beta;

int z[][];

int[][] nw;

int[][] nd;
int[] nwsum;
int[] ndsum;

double[][] thetasum;

double[][] phisum;
int numstats;
private static int THIN_INTERVAL = 20;
private static int BURN_IN = 100;
private static int ITERATIONS = 1000;
private static int SAMPLE_LAG;
private static int dispcol = 0;

public LdaGibbsSampler(int[][] documents, int V) {
System.out.println("into public ldagibbssampler");

this.documents = documents;
this.V = V;
}
public void initialState(int K) {
System.out.println("intialstate");
int i;

int M = documents.length;
nw = new int[V][K];
nd = new int[M][K];
nwsum = new int[K];
ndsum = new int[M];

z = new int[M][];
for (int m = 0; m < M; m++) {
int N = documents[m].length;
z[m] = new int[N];
for (int n = 0; n < N; n++) {
int topic = (int) (Math.random() * K);
z[m][n] = topic;
nw[documents[m][n]][topic]++;
nd[m][topic]++;
nwsum[topic]++;
}
ndsum[m] = N;
}
}
private void gibbs(int K, double alpha, double beta) {
this.K = K;
this.alpha = alpha;
this.beta = beta;

if (SAMPLE_LAG > 0) {
thetasum = new double[documents.length][K];
phisum = new double[K][V];
numstats = 0;
}

initialState(K);

System.out.println("Sampling " + ITERATIONS
+ " iterations with burn-in of " + BURN_IN + " (B/S="
+ THIN_INTERVAL + ").");

for (int i = 0; i < ITERATIONS; i++) {
for (int m = 0; m < z.length; m++) {
for (int n = 0; n < z[m].length; n++) {
int topic = sampleFullConditional(m, n);
z[m][n] = topic;
}
}

if ((i < BURN_IN) && (i % THIN_INTERVAL == 0)) {
System.out.print("B");
dispcol++;
}
if ((i > BURN_IN) && (i % THIN_INTERVAL == 0)) {
System.out.print("S");
dispcol++;
}

if ((i > BURN_IN) && (SAMPLE_LAG > 0) && (i % SAMPLE_LAG == 0)) {
updateParams();
System.out.print("|");
if (i % THIN_INTERVAL != 0)
dispcol++;
}
if (dispcol >= 100) {
System.out.println();
dispcol = 0;
}
}
}
private int sampleFullConditional(int m, int n) {

// remove z_i from the count variables
int topic = z[m][n];
nw[documents[m][n]][topic]--;
nd[m][topic]--;
nwsum[topic]--;
ndsum[m]--;

// do multinomial sampling via cumulative method:
double[] p = new double[K];
for (int k = 0; k < K; k++) {
p[k] = (nw[documents[m][n]][k] + beta) / (nwsum[k] + V * beta)
* (nd[m][k] + alpha) / (ndsum[m] + K * alpha);
}
// cumulate multinomial parameters
for (int k = 1; k < p.length; k++) {
p[k] += p[k - 1];
}
// scaled sample because of unnormalised p[]
double u = Math.random() * p[K - 1];
for (topic = 0; topic < p.length; topic++) {
if (u < p[topic])
break;
}

// add newly estimated z_i to count variables
nw[documents[m][n]][topic]++;
nd[m][topic]++;
nwsum[topic]++;
ndsum[m]++;

return topic;
}

private void updateParams() {
for (int m = 0; m < documents.length; m++) {
for (int k = 0; k < K; k++) {
thetasum[m][k] += (nd[m][k] + alpha) / (ndsum[m] + K * alpha);
}
}
for (int k = 0; k < K; k++) {
for (int w = 0; w < V; w++) {
phisum[k][w] += (nw[w][k] + beta) / (nwsum[k] + V * beta);
}
}
numstats++;
}
public double[][] getTheta() {
double[][] theta = new double[documents.length][K];

if (SAMPLE_LAG > 0) {
for (int m = 0; m < documents.length; m++) {
for (int k = 0; k < K; k++) {
theta[m][k] = thetasum[m][k] / numstats;
}
}

} else {
for (int m = 0; m < documents.length; m++) {
for (int k = 0; k < K; k++) {
theta[m][k] = (nd[m][k] + alpha) / (ndsum[m] + K * alpha);
}
}
}

return theta;
}

public double[][] getPhi() {
double[][] phi = new double[K][V];
if (SAMPLE_LAG > 0) {
for (int k = 0; k < K; k++) {
for (int w = 0; w < V; w++) {
phi[k][w] = phisum[k][w] / numstats;
}
}
} else {
for (int k = 0; k < K; k++) {
for (int w = 0; w < V; w++) {
phi[k][w] = (nw[w][k] + beta) / (nwsum[k] + V * beta);
}
}
}
return phi;
}

public static void hist(double[] data, int fmax) {

double[] hist = new double[data.length];
// scale maximum
double hmax = 0;
for (int i = 0; i < data.length; i++) {
hmax = Math.max(data[i], hmax);
}
double shrink = fmax / hmax;
for (int i = 0; i < data.length; i++) {
hist[i] = shrink * data[i];
}

NumberFormat nf = new DecimalFormat("00");
String scale = "";
for (int i = 1; i < fmax / 10 + 1; i++) {
scale += " . " + i % 10;
}

System.out.println("x" + nf.format(hmax / fmax) + "\t0" + scale);
for (int i = 0; i < hist.length; i++) {
System.out.print(i + "\t|");
for (int j = 0; j < Math.round(hist[i]); j++) {
if ((j + 1) % 10 == 0)
System.out.print("]");
else
System.out.print("|");
}
System.out.println();
}
}

public void configure(int iterations, int burnIn, int thinInterval,
int sampleLag) {
ITERATIONS = iterations;
BURN_IN = burnIn;
THIN_INTERVAL = thinInterval;
SAMPLE_LAG = sampleLag;
}
!!!!!! rest code continues in next thread

[NewUniverse]

package org.knowceans;

This means that the class file should be located in folder: org/knowceans/ under the class path.
If you want the class to be located in the root remove the package line.

[chintucs]

thanks mate it is working Gr8. Thanks i have just become daft and could not understand a simple mistake.