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Data update

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Ingy döt Net 2023-09-16 17:28:03 -07:00
parent 5af6d93694
commit 796d366b97
455 changed files with 7413 additions and 1900 deletions
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35
Task/QR-decomposition/Java/qr-decomposition-5.java
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@ -41,7 +41,7 @@ public final class QRDecomposition {
Matrix z1 = new Matrix(rowCount, columnCount);
for ( int k = 0; k < columnCount && k < rowCount - 1; k++ ) {
Matrix vectorE = new Matrix( new double[rowCount][1] );
Matrix vectorE = new Matrix(rowCount, 1);
z1 = z.minor(k);
Matrix vectorX = z1.column(k);
double magnitudeX = vectorX.magnitude();
@ -52,8 +52,7 @@ public final class QRDecomposition {
for ( int i = 0; i < vectorE.size(); i++ ) {
vectorE.setEntry(i, 0, ( i == k ) ? 1 : 0);
}
vectorE = vectorE.scalarMultiply(magnitudeX).add(vectorX);
vectorE = vectorE.unit();
vectorE = vectorE.scalarMultiply(magnitudeX).add(vectorX).unit();
versionsOfQ.add(householderFactor(vectorE));
z = versionsOfQ.get(k).multiply(z1);
}
@ -74,17 +73,17 @@ public final class QRDecomposition {
}
final int size = aVector.size();
double[][] newData = new double[size][size];
Matrix result = new Matrix(size, size);
for ( int i = 0; i < size; i++ ) {
for ( int j = 0; j < size; j++ ) {
newData[i][j] = -2 * aVector.getEntry(i, 0) * aVector.getEntry(j, 0);
result.setEntry(i, j, -2 * aVector.getEntry(i, 0) * aVector.getEntry(j, 0));
}
}
for ( int i = 0; i < size; i++ ) {
newData[i][i] += 1;
result.setEntry(i, i, result.getEntry(i, i) + 1.0);
}
return new Matrix(newData);
return result;
}
private static Matrix fitPolynomial(Matrix aX, Matrix aY, int aPolynomialDegree) {
@ -137,8 +136,8 @@ final class Matrix {
this(aMatrix.data);
}
public Matrix(int aRows, int aCols) {
this( new double[aRows][aCols] );
public Matrix(int aRowCount, int aColumnCount) {
this( new double[aRowCount][aColumnCount] );
}
public Matrix add(Matrix aOther) {
@ -195,10 +194,10 @@ final class Matrix {
return result;
}
public Matrix column(int aColumn) {
public Matrix column(int aIndex) {
Matrix result = new Matrix(rowCount, 1);
for ( int i = 0; i < rowCount; i++ ) {
result.setEntry(i, 0, data[i][aColumn]);
result.setEntry(i, 0, data[i][aIndex]);
}
return result;
}
@ -209,7 +208,7 @@ final class Matrix {
}
Matrix result = new Matrix(rowCount, columnCount);
for ( int i = 0; i < data.length; i++ ) {
for ( int i = 0; i < rowCount; i++ ) {
result.data[i][0] = data[i][0] * aValue;
}
return result;
@ -222,7 +221,7 @@ final class Matrix {
final double magnitude = magnitude();
Matrix result = new Matrix(rowCount, columnCount);
for ( int i = 0; i < data.length; i++ ) {
for ( int i = 0; i < rowCount; i++ ) {
result.data[i][0] = data[i][0] / magnitude;
}
return result;
@ -244,7 +243,7 @@ final class Matrix {
if ( columnCount != 1 ) {
throw new IllegalArgumentException("Incompatible matrix dimensions.");
}
return data.length;
return rowCount;
}
public void display(String aTitle) {
@ -258,12 +257,12 @@ final class Matrix {
System.out.println();
}
public double getEntry(int aRow, int aCol) {
return data[aRow][aCol];
public double getEntry(int aRow, int aColumn) {
return data[aRow][aColumn];
}
public void setEntry(int aRow, int aCol, double aValue) {
data[aRow][aCol] = aValue;
public void setEntry(int aRow, int aColumn, double aValue) {
data[aRow][aColumn] = aValue;
}
public int getRowCount() {