本文整理了Java中org.apache.mahout.math.Vector.getQuick()
方法的一些代码示例,展示了Vector.getQuick()
的具体用法。这些代码示例主要来源于Github
/Stackoverflow
/Maven
等平台,是从一些精选项目中提取出来的代码,具有较强的参考意义,能在一定程度帮忙到你。Vector.getQuick()
方法的具体详情如下:
包路径:org.apache.mahout.math.Vector
类名称:Vector
方法名:getQuick
[英]Return the value at the given index, without checking bounds
[中]返回给定索引处的值,不检查边界
代码示例来源:origin: apache/mahout
/**
* Return the value at the given index, without checking bounds
*
* @param index an int index
* @return the double at the index
*/
@Override
public double getQuick(int index) {
return vector.getQuick(pivot[index]);
}
代码示例来源:origin: apache/mahout
static Matrix createMiIi(Iterable<Vector> featureVectors, int numFeatures) {
double[][] MiIi = new double[numFeatures][Iterables.size(featureVectors)];
int n = 0;
for (Vector featureVector : featureVectors) {
for (int m = 0; m < numFeatures; m++) {
MiIi[m][n] = featureVector.getQuick(m);
}
n++;
}
return new DenseMatrix(MiIi, true);
}
代码示例来源:origin: apache/mahout
@Override
public double getQuick(int row, int column) {
Vector r = rowVectors.get(row);
return r == null ? 0.0 : r.getQuick(column);
}
代码示例来源:origin: apache/mahout
@Override
public Vector assign(Vector x, Vector y, DoubleDoubleFunction f) {
for (int i = 0; i < x.size(); ++i) {
x.setQuick(i, f.apply(x.getQuick(i), y.getQuick(i)));
}
return x;
}
}
代码示例来源:origin: apache/mahout
@Override
public Matrix timesRight(Matrix that) {
if (that.numRows() != diagonal.size()) {
throw new IllegalArgumentException("Incompatible number of rows in the right operand of matrix multiplication.");
}
Matrix m = that.like();
for (int row = 0; row < diagonal.size(); row++) {
m.assignRow(row, that.viewRow(row).times(diagonal.getQuick(row)));
}
return m;
}
代码示例来源:origin: apache/mahout
@Override
public Vector assign(Vector x, Vector y, DoubleDoubleFunction f) {
for (Element xe : x.nonZeroes()) {
xe.set(f.apply(xe.get(), y.getQuick(xe.index())));
}
return x;
}
}
代码示例来源:origin: apache/mahout
@Override
public Vector assign(Vector x, Vector y, DoubleDoubleFunction f) {
for (Element ye : y.nonZeroes()) {
x.setQuick(ye.index(), f.apply(x.getQuick(ye.index()), ye.get()));
}
return x;
}
}
代码示例来源:origin: apache/mahout
@Override
public Vector assign(Vector x, Vector y, DoubleDoubleFunction f) {
for (Element xe : x.all()) {
x.setQuick(xe.index(), f.apply(xe.get(), y.getQuick(xe.index())));
}
return x;
}
}
代码示例来源:origin: apache/mahout
@Override
public Vector assign(Vector x, Vector y, DoubleDoubleFunction f) {
for (Element ye : y.all()) {
x.setQuick(ye.index(), f.apply(x.getQuick(ye.index()), ye.get()));
}
return x;
}
}
代码示例来源:origin: apache/mahout
@Override
public Vector assign(Vector x, Vector y, DoubleDoubleFunction f) {
OrderedIntDoubleMapping updates = new OrderedIntDoubleMapping(false);
for (Element xe : x.all()) {
updates.set(xe.index(), f.apply(xe.get(), y.getQuick(xe.index())));
}
x.mergeUpdates(updates);
return x;
}
}
代码示例来源:origin: apache/mahout
@Override
public Vector assign(Vector x, Vector y, DoubleDoubleFunction f) {
OrderedIntDoubleMapping updates = new OrderedIntDoubleMapping(false);
for (Element ye : y.all()) {
updates.set(ye.index(), f.apply(x.getQuick(ye.index()), ye.get()));
}
x.mergeUpdates(updates);
return x;
}
}
代码示例来源:origin: apache/mahout
@Override
public Vector assign(Vector x, Vector y, DoubleDoubleFunction f) {
OrderedIntDoubleMapping updates = new OrderedIntDoubleMapping(false);
for (Element ye : y.nonZeroes()) {
updates.set(ye.index(), f.apply(x.getQuick(ye.index()), ye.get()));
}
x.mergeUpdates(updates);
return x;
}
}
代码示例来源:origin: apache/mahout
@Test
public void testAssignDoubleArray() {
double[] array = new double[test.size()];
test.assign(array);
for (int i = 0; i < values.length; i++) {
assertEquals("value[" + i + ']', 0.0, test.getQuick(i), EPSILON);
}
}
代码示例来源:origin: apache/mahout
@Test
public void testAssignDouble() {
test.assign(0);
for (int i = 0; i < test.size(); i++) {
assertEquals("value[" + i + ']', 0.0, test.getQuick(i), EPSILON);
}
}
代码示例来源:origin: apache/mahout
@Test
public void testAssignBinaryFunction2() throws Exception {
test.assign(Functions.PLUS, 4);
for (int i = 0; i < test.size(); i++) {
assertEquals("value[" + i + ']', values[i + 1] + 4, test.getQuick(i), EPSILON);
}
}
代码示例来源:origin: apache/mahout
@Test
public void testAssignBinaryFunction3() throws Exception {
test.assign(new TimesFunction(), 4);
for (int i = 0; i < test.size(); i++) {
assertEquals("value[" + i + ']', values[i + 1] * 4, test.getQuick(i), EPSILON);
}
}
代码示例来源:origin: apache/mahout
@Test
public void testAssignBinaryFunction() {
test.assign(test, Functions.PLUS);
for (int i = 0; i < values.length; i++) {
if (i % 2 == 0) {
assertEquals("get [" + i + ']', 0.0, test.get(i), EPSILON);
} else {
assertEquals("value[" + i + ']', 2 * values[i - 1], test.getQuick(i), EPSILON);
}
}
}
代码示例来源:origin: apache/mahout
@Test
public void testAssignBinaryFunction2() {
test.assign(Functions.plus(4));
for (int i = 0; i < values.length; i++) {
if (i % 2 == 0) {
assertEquals("get [" + i + ']', 4.0, test.get(i), EPSILON);
} else {
assertEquals("value[" + i + ']', values[i - 1] + 4, test.getQuick(i), EPSILON);
}
}
}
代码示例来源:origin: apache/mahout
@Test
public void testCrossProduct() {
Matrix result = test.cross(test);
assertEquals("row size", test.size(), result.rowSize());
assertEquals("col size", test.size(), result.columnSize());
for (int row = 0; row < result.rowSize(); row++) {
for (int col = 0; col < result.columnSize(); col++) {
assertEquals("cross[" + row + "][" + col + ']', test.getQuick(row)
* test.getQuick(col), result.getQuick(row, col), EPSILON);
}
}
}
代码示例来源:origin: apache/mahout
@Test
public void testViewRow() {
Vector row = test.viewRow(1);
assertEquals("row size", 2, row.getNumNondefaultElements());
//create a matrix with an unassigned row 0
Matrix matrix = new SparseMatrix(1, 1);
Vector view = matrix.viewRow(0);
final double value = 1.23;
view.assign(value);
//test whether the update in the view is reflected in the matrix
assertEquals("Matrix value", view.getQuick(0), matrix.getQuick(0, 0), EPSILON);
}
内容来源于网络,如有侵权,请联系作者删除!