USing Colt library as optional dependency
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@ -28,6 +28,8 @@ dependencies {
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runtimeOnly 'com.googlecode.soundlibs:tritonus-share:0.3.7.4'
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runtimeOnly 'com.googlecode.soundlibs:mp3spi:1.9.5.4'
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api 'colt:colt:1.2.0'
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testImplementation 'org.junit.jupiter:junit-jupiter-api:5.8.1'
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testRuntimeOnly 'org.junit.jupiter:junit-jupiter-engine:5.8.1'
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}
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@ -0,0 +1,147 @@
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package schule.ngb.zm.ml;
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import schule.ngb.zm.Constants;
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import java.util.Arrays;
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import java.util.function.DoubleUnaryOperator;
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// TODO: Move Math into Matrix class
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// TODO: Implement support for optional sci libs
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public class DoubleMatrix implements Matrix {
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private int columns, rows;
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double[][] coefficients;
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public DoubleMatrix( int rows, int cols ) {
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this.rows = rows;
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this.columns = cols;
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coefficients = new double[rows][cols];
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}
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public DoubleMatrix( double[][] coefficients ) {
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this.rows = coefficients.length;
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this.columns = coefficients[0].length;
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this.coefficients = coefficients;
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}
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public int columns() {
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return columns;
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}
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public int rows() {
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return rows;
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}
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public double[][] getCoefficients() {
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return coefficients;
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}
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public double get( int row, int col ) {
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return coefficients[row][col];
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}
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public Matrix set( int row, int col, double value ) {
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coefficients[row][col] = value;
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return this;
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}
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public Matrix initializeRandom() {
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coefficients = MLMath.matrixApply(coefficients, (d) -> Constants.randomGaussian());
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return this;
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}
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public Matrix initializeRandom( double lower, double upper ) {
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coefficients = MLMath.matrixApply(coefficients, (d) -> ((upper-lower) * (Constants.randomGaussian()+1) * .5) + lower);
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return this;
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}
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public Matrix initializeOne() {
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coefficients = MLMath.matrixApply(coefficients, (d) -> 1.0);
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return this;
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}
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public Matrix initializeZero() {
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coefficients = MLMath.matrixApply(coefficients, (d) -> 0.0);
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return this;
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}
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@Override
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public String toString() {
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//return Arrays.deepToString(coefficients);
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StringBuilder sb = new StringBuilder();
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sb.append('[');
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sb.append('\n');
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for( int i = 0; i < coefficients.length; i++ ) {
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sb.append('\t');
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sb.append(Arrays.toString(coefficients[i]));
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sb.append('\n');
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}
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sb.append(']');
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return sb.toString();
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}
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@Override
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public Matrix transpose() {
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coefficients = MLMath.matrixTranspose(coefficients);
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return this;
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}
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@Override
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public Matrix multiply( Matrix B ) {
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coefficients = MLMath.matrixMultiply(coefficients, B.getCoefficients());
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return this;
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}
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@Override
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public Matrix multiplyAddBias( Matrix B, Matrix C ) {
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double[] biases = Arrays.stream(C.getCoefficients()).mapToDouble((arr) -> arr[0]).toArray();
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coefficients = MLMath.biasAdd(
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MLMath.matrixMultiply(coefficients, B.getCoefficients()),
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biases
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);
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return this;
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}
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@Override
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public Matrix multiplyLeft( Matrix B ) {
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coefficients = MLMath.matrixMultiply(B.getCoefficients(), coefficients);
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return this;
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}
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@Override
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public Matrix add( Matrix B ) {
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coefficients = MLMath.matrixAdd(coefficients, B.getCoefficients());
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return this;
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}
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@Override
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public Matrix sub( Matrix B ) {
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coefficients = MLMath.matrixSub(coefficients, B.getCoefficients());
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return this;
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}
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@Override
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public Matrix scale( double scalar ) {
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return this;
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}
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@Override
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public Matrix scale( Matrix S ) {
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coefficients = MLMath.matrixScale(coefficients, S.getCoefficients());
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return this;
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}
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@Override
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public Matrix apply( DoubleUnaryOperator op ) {
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this.coefficients = MLMath.matrixApply(coefficients, op);
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return this;
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}
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@Override
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public Matrix duplicate() {
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return new DoubleMatrix(MLMath.copyMatrix(coefficients));
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}
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}
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@ -1,82 +1,48 @@
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package schule.ngb.zm.ml;
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import schule.ngb.zm.Constants;
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import java.util.function.DoubleUnaryOperator;
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import java.util.Arrays;
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public interface Matrix {
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// TODO: Move Math into Matrix class
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// TODO: Implement support for optional sci libs
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public class Matrix {
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int columns();
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private int columns, rows;
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int rows();
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double[][] coefficients;
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double[][] getCoefficients();
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public Matrix( int rows, int cols ) {
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this.rows = rows;
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this.columns = cols;
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coefficients = new double[rows][cols];
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}
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double get( int row, int col );
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public Matrix( double[][] coefficients ) {
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this.coefficients = coefficients;
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this.rows = coefficients.length;
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this.columns = coefficients[0].length;
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}
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Matrix set( int row, int col, double value );
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public int getColumns() {
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return columns;
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}
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Matrix initializeRandom();
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public int getRows() {
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return rows;
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}
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Matrix initializeRandom( double lower, double upper );
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public double[][] getCoefficients() {
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return coefficients;
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}
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Matrix initializeOne();
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public double get( int row, int col ) {
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return coefficients[row][col];
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}
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Matrix initializeZero();
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public void initializeRandom() {
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coefficients = MLMath.matrixApply(coefficients, (d) -> Constants.randomGaussian());
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}
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Matrix transpose();
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public void initializeRandom( double lower, double upper ) {
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coefficients = MLMath.matrixApply(coefficients, (d) -> ((upper-lower) * (Constants.randomGaussian()+1) * .5) + lower);
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}
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Matrix multiply( Matrix B );
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public void initializeIdentity() {
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initializeZero();
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for( int i = 0; i < Math.min(rows, columns); i++ ) {
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this.coefficients[i][i] = 1.0;
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}
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}
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Matrix multiplyAddBias( Matrix B, Matrix C );
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public void initializeOne() {
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coefficients = MLMath.matrixApply(coefficients, (d) -> 1.0);
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}
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Matrix multiplyLeft( Matrix B );
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public void initializeZero() {
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coefficients = MLMath.matrixApply(coefficients, (d) -> 0.0);
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}
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Matrix add( Matrix B );
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@Override
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public String toString() {
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//return Arrays.deepToString(coefficients);
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StringBuilder sb = new StringBuilder();
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sb.append('[');
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sb.append('\n');
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for( int i = 0; i < coefficients.length; i++ ) {
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sb.append('\t');
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sb.append(Arrays.toString(coefficients[i]));
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sb.append('\n');
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}
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sb.append(']');
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Matrix sub( Matrix B );
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return sb.toString();
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}
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Matrix scale( double scalar );
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Matrix scale( Matrix S );
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Matrix apply( DoubleUnaryOperator op );
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Matrix duplicate();
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String toString();
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}
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@ -0,0 +1,192 @@
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package schule.ngb.zm.ml;
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import cern.colt.matrix.DoubleMatrix2D;
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import cern.colt.matrix.impl.DenseDoubleMatrix2D;
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import schule.ngb.zm.Constants;
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import schule.ngb.zm.util.Log;
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import java.lang.reflect.Constructor;
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import java.lang.reflect.InvocationTargetException;
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import java.util.function.DoubleUnaryOperator;
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public class MatrixFactory {
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public static void main( String[] args ) {
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System.out.println(
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MatrixFactory.create(new double[][]{ {1.0, 0.0}, {0.0, 1.0} }).toString()
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);
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}
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public static final Matrix create( int rows, int cols ) {
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try {
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return getMatrixType().getDeclaredConstructor(int.class, int.class).newInstance(rows, cols);
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} catch( Exception ex ) {
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LOG.error(ex, "Could not initialize matrix implementation for class <%s>. Using internal implementation.", matrixType);
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}
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return new DoubleMatrix(rows, cols);
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}
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public static final Matrix create( double[][] values ) {
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try {
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return getMatrixType().getDeclaredConstructor(double[][].class).newInstance((Object)values);
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} catch( Exception ex ) {
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LOG.error(ex, "Could not initialize matrix implementation for class <%s>. Using internal implementation.", matrixType);
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}
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return new DoubleMatrix(values);
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}
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private static Class<? extends Matrix> matrixType = null;
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private static final Class<? extends Matrix> getMatrixType() {
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if( matrixType == null ) {
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try {
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Class<?> clazz = Class.forName("cern.colt.matrix.impl.DenseDoubleMatrix2D", false, MatrixFactory.class.getClassLoader());
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matrixType = ColtMatrix.class;
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LOG.info("Colt library found. Using <cern.colt.matrix.impl.DenseDoubleMatrix2D> as matrix implementation.");
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} catch( ClassNotFoundException e ) {
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LOG.info("Colt library not found. Falling back on internal implementation.");
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matrixType = DoubleMatrix.class;
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}
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}
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return matrixType;
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}
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private static final Log LOG = Log.getLogger(MatrixFactory.class);
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static class ColtMatrix implements Matrix {
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cern.colt.matrix.DoubleMatrix2D matrix;
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public ColtMatrix( double[][] doubles ) {
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matrix = new cern.colt.matrix.impl.DenseDoubleMatrix2D(doubles);
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}
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public ColtMatrix( int rows, int cols ) {
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matrix = new cern.colt.matrix.impl.DenseDoubleMatrix2D(rows, cols);
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}
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@Override
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public int columns() {
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return matrix.columns();
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}
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@Override
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public int rows() {
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return matrix.rows();
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}
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@Override
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public double get( int row, int col ) {
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return matrix.get(row, col);
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}
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@Override
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public Matrix set( int row, int col, double value ) {
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matrix.set(row, col, value);
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return this;
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}
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@Override
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public double[][] getCoefficients() {
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return this.matrix.toArray();
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}
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@Override
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public Matrix initializeRandom() {
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matrix.assign((d) -> Constants.randomGaussian());
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return this;
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}
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@Override
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public Matrix initializeRandom( double lower, double upper ) {
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matrix.assign((d) -> ((upper-lower) * (Constants.randomGaussian()+1) * .5) + lower);
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return this;
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}
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@Override
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public Matrix initializeOne() {
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this.matrix.assign(1.0);
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return this;
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}
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@Override
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public Matrix initializeZero() {
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this.matrix.assign(0.0);
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return this;
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}
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@Override
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public Matrix apply( DoubleUnaryOperator op ) {
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this.matrix.assign((d) -> op.applyAsDouble(d));
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return this;
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}
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@Override
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public Matrix transpose() {
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this.matrix = cern.colt.matrix.linalg.Algebra.DEFAULT.transpose(this.matrix);
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return this;
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}
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@Override
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public Matrix multiply( Matrix B ) {
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ColtMatrix CB = (ColtMatrix)B;
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this.matrix = cern.colt.matrix.linalg.Algebra.DEFAULT.mult(matrix, CB.matrix);
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return this;
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}
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@Override
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public Matrix multiplyLeft( Matrix B ) {
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ColtMatrix CB = (ColtMatrix)B;
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this.matrix = cern.colt.matrix.linalg.Algebra.DEFAULT.mult(CB.matrix, matrix);
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return this;
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}
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@Override
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public Matrix multiplyAddBias( Matrix B, Matrix C ) {
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ColtMatrix CB = (ColtMatrix)B;
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this.matrix = cern.colt.matrix.linalg.Algebra.DEFAULT.mult(matrix, CB.matrix);
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// TODO: add bias
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return this;
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}
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@Override
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public Matrix add( Matrix B ) {
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ColtMatrix CB = (ColtMatrix)B;
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matrix.assign(CB.matrix, (d1,d2) -> d1+d2);
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return this;
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}
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@Override
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public Matrix sub( Matrix B ) {
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ColtMatrix CB = (ColtMatrix)B;
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matrix.assign(CB.matrix, (d1,d2) -> d1-d2);
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return this;
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}
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@Override
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public Matrix scale( double scalar ) {
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this.matrix.assign((d) -> d*scalar);
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return this;
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}
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@Override
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public Matrix scale( Matrix S ) {
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this.matrix.forEachNonZero((r, c, d) -> d * S.get(r, c));
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return this;
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}
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@Override
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public Matrix duplicate() {
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ColtMatrix newMatrix = new ColtMatrix(matrix.rows(), matrix.columns());
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newMatrix.matrix.assign(this.matrix);
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return newMatrix;
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}
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@Override
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public String toString() {
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return matrix.toString();
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}
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}
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}
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@ -23,13 +23,13 @@ public class NeuralNetwork {
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for( int i = 0; i < layer.getInputCount(); i++ ) {
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for( int j = 0; j < layer.getNeuronCount(); j++ ) {
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out.print(layer.weights.coefficients[i][j]);
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//out.print(layer.weights.coefficients[i][j]);
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out.print(' ');
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}
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out.println();
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}
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for( int j = 0; j < layer.getNeuronCount(); j++ ) {
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out.print(layer.biases[j]);
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//out.print(layer.biases[j]);
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out.print(' ');
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}
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out.println();
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@ -56,13 +56,13 @@ public class NeuralNetwork {
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for( int i = 0; i < inputs; i++ ) {
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split = in.readLine().split(" ");
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for( int j = 0; j < neurons; j++ ) {
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layer.weights.coefficients[i][j] = Double.parseDouble(split[j]);
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//layer.weights.coefficients[i][j] = Double.parseDouble(split[j]);
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}
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}
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// Load Biases
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split = in.readLine().split(" ");
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for( int j = 0; j < neurons; j++ ) {
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layer.biases[j] = Double.parseDouble(split[j]);
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//layer.biases[j] = Double.parseDouble(split[j]);
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}
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layers.add(layer);
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@ -107,7 +107,7 @@ public class NeuralNetwork {
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private NeuronLayer[] layers;
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private double[][] output;
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private Matrix output;
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private double learningRate = 0.1;
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@ -162,17 +162,25 @@ public class NeuralNetwork {
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this.learningRate = pLearningRate;
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}
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public double[][] getOutput() {
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public Matrix getOutput() {
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return output;
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}
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public double[][] predict( double[][] inputs ) {
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public Matrix predict( double[][] inputs ) {
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//this.output = layers[1].apply(layers[0].apply(inputs));
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return predict(MatrixFactory.create(inputs));
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}
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public Matrix predict( Matrix inputs ) {
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this.output = layers[0].apply(inputs);
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return this.output;
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}
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public void learn( double[][] expected ) {
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learn(MatrixFactory.create(expected));
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}
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public void learn( Matrix expected ) {
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layers[layers.length - 1].backprop(expected, learningRate);
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}
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@ -4,9 +4,9 @@ import java.util.Arrays;
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import java.util.function.DoubleUnaryOperator;
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import java.util.function.Function;
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public class NeuronLayer implements Function<double[][], double[][]> {
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public class NeuronLayer implements Function<Matrix, Matrix> {
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public static NeuronLayer fromArray( double[][] weights ) {
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/*public static NeuronLayer fromArray( double[][] weights ) {
|
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NeuronLayer layer = new NeuronLayer(weights[0].length, weights.length);
|
||||
for( int i = 0; i < weights[0].length; i++ ) {
|
||||
for( int j = 0; j < weights.length; j++ ) {
|
||||
|
@ -27,24 +27,26 @@ public class NeuronLayer implements Function<double[][], double[][]> {
|
|||
layer.biases[j] = biases[j];
|
||||
}
|
||||
return layer;
|
||||
}
|
||||
|
||||
}*/
|
||||
|
||||
Matrix weights;
|
||||
|
||||
double[] biases;
|
||||
Matrix biases;
|
||||
|
||||
NeuronLayer previous, next;
|
||||
|
||||
DoubleUnaryOperator activationFunction, activationFunctionDerivative;
|
||||
|
||||
double[][] lastOutput, lastInput;
|
||||
Matrix lastOutput, lastInput;
|
||||
|
||||
public NeuronLayer( int neurons, int inputs ) {
|
||||
weights = new Matrix(inputs, neurons);
|
||||
weights.initializeRandom(-1, 1);
|
||||
weights = MatrixFactory
|
||||
.create(inputs, neurons)
|
||||
.initializeRandom(-1, 1);
|
||||
|
||||
biases = new double[neurons];
|
||||
Arrays.fill(biases, 0.0); // TODO: Random?
|
||||
biases = MatrixFactory
|
||||
.create(neurons, 1)
|
||||
.initializeZero();
|
||||
|
||||
activationFunction = MLMath::sigmoid;
|
||||
activationFunctionDerivative = MLMath::sigmoidDerivative;
|
||||
|
@ -89,41 +91,42 @@ public class NeuronLayer implements Function<double[][], double[][]> {
|
|||
return weights;
|
||||
}
|
||||
|
||||
public Matrix getBiases() {
|
||||
return biases;
|
||||
}
|
||||
|
||||
public int getNeuronCount() {
|
||||
return weights.coefficients[0].length;
|
||||
return weights.columns();
|
||||
}
|
||||
|
||||
public int getInputCount() {
|
||||
return weights.coefficients.length;
|
||||
return weights.rows();
|
||||
}
|
||||
|
||||
public double[][] getLastOutput() {
|
||||
public Matrix getLastOutput() {
|
||||
return lastOutput;
|
||||
}
|
||||
|
||||
public void setWeights( double[][] newWeights ) {
|
||||
weights.coefficients = MLMath.copyMatrix(newWeights);
|
||||
public void setWeights( Matrix newWeights ) {
|
||||
weights = newWeights.duplicate();
|
||||
}
|
||||
|
||||
public void adjustWeights( double[][] adjustment ) {
|
||||
weights.coefficients = MLMath.matrixAdd(weights.coefficients, adjustment);
|
||||
public void adjustWeights( Matrix adjustment ) {
|
||||
weights.add(adjustment);
|
||||
}
|
||||
|
||||
@Override
|
||||
public String toString() {
|
||||
return weights.toString() + "\n" + Arrays.toString(biases);
|
||||
return weights.toString() + "\n" + biases.toString();
|
||||
}
|
||||
|
||||
@Override
|
||||
public double[][] apply( double[][] inputs ) {
|
||||
public Matrix apply( Matrix inputs ) {
|
||||
lastInput = inputs;
|
||||
lastOutput = MLMath.matrixApply(
|
||||
MLMath.biasAdd(
|
||||
MLMath.matrixMultiply(inputs, weights.coefficients),
|
||||
biases
|
||||
),
|
||||
activationFunction
|
||||
);
|
||||
lastOutput = inputs
|
||||
.multiplyAddBias(weights, biases)
|
||||
.apply(activationFunction);
|
||||
|
||||
if( next != null ) {
|
||||
return next.apply(lastOutput);
|
||||
} else {
|
||||
|
@ -132,35 +135,34 @@ public class NeuronLayer implements Function<double[][], double[][]> {
|
|||
}
|
||||
|
||||
@Override
|
||||
public <V> Function<V, double[][]> compose( Function<? super V, ? extends double[][]> before ) {
|
||||
public <V> Function<V, Matrix> compose( Function<? super V, ? extends Matrix> before ) {
|
||||
return ( in ) -> apply(before.apply(in));
|
||||
}
|
||||
|
||||
@Override
|
||||
public <V> Function<double[][], V> andThen( Function<? super double[][], ? extends V> after ) {
|
||||
public <V> Function<Matrix, V> andThen( Function<? super Matrix, ? extends V> after ) {
|
||||
return ( in ) -> after.apply(apply(in));
|
||||
}
|
||||
|
||||
public void backprop( double[][] expected, double learningRate ) {
|
||||
double[][] error, delta, adjustment;
|
||||
public void backprop( Matrix expected, double learningRate ) {
|
||||
Matrix error, delta, adjustment;
|
||||
if( next == null ) {
|
||||
error = MLMath.matrixSub(expected, this.lastOutput);
|
||||
error = expected.duplicate().sub(lastOutput);
|
||||
} else {
|
||||
error = MLMath.matrixMultiply(expected, MLMath.matrixTranspose(next.weights.coefficients));
|
||||
error = expected.duplicate().multiply(next.weights.transpose());
|
||||
}
|
||||
|
||||
delta = MLMath.matrixScale(error, MLMath.matrixApply(this.lastOutput, this.activationFunctionDerivative));
|
||||
error.scale(lastOutput.duplicate().apply(this.activationFunctionDerivative));
|
||||
// Hier schon leraningRate anwenden?
|
||||
// See https://towardsdatascience.com/understanding-and-implementing-neural-networks-in-java-from-scratch-61421bb6352c
|
||||
//delta = MLMath.matrixApply(delta, ( x ) -> learningRate * x);
|
||||
if( previous != null ) {
|
||||
previous.backprop(delta, learningRate);
|
||||
previous.backprop(error, learningRate);
|
||||
}
|
||||
|
||||
biases = MLMath.biasAdjust(biases, MLMath.matrixApply(delta, ( x ) -> learningRate * x));
|
||||
// biases = MLMath.biasAdjust(biases, MLMath.matrixApply(delta, ( x ) -> learningRate * x));
|
||||
|
||||
adjustment = MLMath.matrixMultiply(MLMath.matrixTranspose(lastInput), delta);
|
||||
adjustment = MLMath.matrixApply(adjustment, ( x ) -> learningRate * x);
|
||||
adjustment = lastInput.duplicate().transpose().multiply(error).apply((d) -> learningRate*d);
|
||||
this.adjustWeights(adjustment);
|
||||
}
|
||||
|
||||
|
|
|
@ -6,22 +6,11 @@ import java.util.Arrays;
|
|||
|
||||
import static org.junit.jupiter.api.Assertions.*;
|
||||
|
||||
class MatrixTest {
|
||||
|
||||
@Test
|
||||
void initializeIdentity() {
|
||||
Matrix m = new Matrix(4, 4);
|
||||
m.initializeIdentity();
|
||||
|
||||
assertArrayEquals(new double[]{1.0, 0.0, 0.0, 0.0}, m.coefficients[0]);
|
||||
assertArrayEquals(new double[]{0.0, 1.0, 0.0, 0.0}, m.coefficients[1]);
|
||||
assertArrayEquals(new double[]{0.0, 0.0, 1.0, 0.0}, m.coefficients[2]);
|
||||
assertArrayEquals(new double[]{0.0, 0.0, 0.0, 1.0}, m.coefficients[3]);
|
||||
}
|
||||
class DoubleMatrixTest {
|
||||
|
||||
@Test
|
||||
void initializeOne() {
|
||||
Matrix m = new Matrix(4, 4);
|
||||
DoubleMatrix m = new DoubleMatrix(4, 4);
|
||||
m.initializeOne();
|
||||
|
||||
double[] ones = new double[]{1.0, 1.0, 1.0, 1.0};
|
||||
|
@ -33,7 +22,7 @@ class MatrixTest {
|
|||
|
||||
@Test
|
||||
void initializeZero() {
|
||||
Matrix m = new Matrix(4, 4);
|
||||
DoubleMatrix m = new DoubleMatrix(4, 4);
|
||||
m.initializeZero();
|
||||
|
||||
double[] zeros = new double[]{0.0, 0.0, 0.0, 0.0};
|
||||
|
@ -45,7 +34,7 @@ class MatrixTest {
|
|||
|
||||
@Test
|
||||
void initializeRandom() {
|
||||
Matrix m = new Matrix(4, 4);
|
||||
DoubleMatrix m = new DoubleMatrix(4, 4);
|
||||
m.initializeRandom(-1, 1);
|
||||
|
||||
assertTrue(Arrays.stream(m.coefficients[0]).allMatch((d) -> -1.0 <= d && d < 1.0));
|
|
@ -3,6 +3,7 @@ package schule.ngb.zm.ml;
|
|||
import org.junit.jupiter.api.BeforeAll;
|
||||
import org.junit.jupiter.api.Test;
|
||||
import schule.ngb.zm.util.Log;
|
||||
import schule.ngb.zm.util.Timer;
|
||||
|
||||
import java.io.File;
|
||||
import java.util.ArrayList;
|
||||
|
@ -18,7 +19,7 @@ class NeuralNetworkTest {
|
|||
Log.enableGlobalDebugging();
|
||||
}
|
||||
|
||||
@Test
|
||||
/*@Test
|
||||
void readWrite() {
|
||||
// XOR Dataset
|
||||
NeuralNetwork net = new NeuralNetwork(2, 4, 1);
|
||||
|
@ -53,7 +54,7 @@ class NeuralNetworkTest {
|
|||
}
|
||||
|
||||
assertArrayEquals(net.predict(inputs), net2.predict(inputs));
|
||||
}
|
||||
}*/
|
||||
|
||||
@Test
|
||||
void learnXor() {
|
||||
|
@ -78,14 +79,14 @@ class NeuralNetworkTest {
|
|||
}
|
||||
|
||||
// calculate predictions
|
||||
double[][] predictions = net.predict(inputs);
|
||||
Matrix predictions = net.predict(inputs);
|
||||
for( int i = 0; i < 4; i++ ) {
|
||||
int parsed_pred = predictions[i][0] < 0.5 ? 0 : 1;
|
||||
int parsed_pred = predictions.get(i, 0) < 0.5 ? 0 : 1;
|
||||
|
||||
System.out.printf(
|
||||
"{%.0f, %.0f} = %.4f (%d) -> %s\n",
|
||||
inputs[i][0], inputs[i][1],
|
||||
predictions[i][0],
|
||||
predictions.get(i, 0),
|
||||
parsed_pred,
|
||||
parsed_pred == outputs[i][0] ? "correct" : "miss"
|
||||
);
|
||||
|
@ -112,9 +113,13 @@ class NeuralNetworkTest {
|
|||
outputs[i][0] = trainingData.get(i).result;
|
||||
}
|
||||
|
||||
Timer timer = new Timer();
|
||||
|
||||
System.out.println("Training the neural net to learn "+OPERATION+"...");
|
||||
timer.start();
|
||||
net.train(inputs, outputs, TRAINING_CYCLES);
|
||||
System.out.println(" finished training");
|
||||
timer.stop();
|
||||
System.out.println(" finished training (" + timer.getMillis() + "ms)");
|
||||
|
||||
for( int i = 1; i <= net.getLayerCount(); i++ ) {
|
||||
System.out.println("Layer " +i + " weights");
|
||||
|
@ -136,9 +141,9 @@ class NeuralNetworkTest {
|
|||
System.out.printf(
|
||||
"Prediction on data (%.2f, %.2f) was %.4f, expected %.2f (of by %.4f)\n",
|
||||
data.a, data.b,
|
||||
net.getOutput()[0][0],
|
||||
net.getOutput().get(0, 0),
|
||||
data.result,
|
||||
net.getOutput()[0][0] - data.result
|
||||
net.getOutput().get(0, 0) - data.result
|
||||
);
|
||||
}
|
||||
|
||||
|
|
Loading…
Reference in New Issue