本文整理了Java中org.apache.mahout.math.Matrix.getQuick()方法的一些代码示例，展示了Matrix.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。Matrix.getQuick()方法的具体详情如下：
包路径：org.apache.mahout.math.Matrix
类名称：Matrix
方法名：getQuick

Matrix.getQuick介绍

[英]Return the value at the given indexes, without checking bounds
[中]返回给定索引处的值，不检查边界

代码示例

代码示例来源：origin: apache/mahout

/**
 * Return the value at the given indexes, without checking bounds
 *
 * @param row    an int row index
 * @param column an int column index
 * @return the double at the index
 */
@Override
public double getQuick(int row, int column) {
 return base.getQuick(rowPivot[row], columnPivot[column]);
}

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 matrix.getQuick(row + rowStride * index, column + columnStride * index);
}

代码示例来源：origin: apache/mahout

@Test
public void createMiIi() {
 Vector f1 = new DenseVector(new double[] { 1, 2, 3 });
 Vector f2 = new DenseVector(new double[] { 4, 5, 6 });
 Matrix miIi = AlternatingLeastSquaresSolver.createMiIi(Arrays.asList(f1, f2), 3);
 assertEquals(1.0, miIi.getQuick(0, 0), EPSILON);
 assertEquals(2.0, miIi.getQuick(1, 0), EPSILON);
 assertEquals(3.0, miIi.getQuick(2, 0), EPSILON);
 assertEquals(4.0, miIi.getQuick(0, 1), EPSILON);
 assertEquals(5.0, miIi.getQuick(1, 1), EPSILON);
 assertEquals(6.0, miIi.getQuick(2, 1), EPSILON);
}

代码示例来源：origin: apache/mahout

public JacobiConditioner(Matrix a) {
 if (a.numCols() != a.numRows()) {
  throw new IllegalArgumentException("Matrix must be square.");
 }
 
 inverseDiagonal = new DenseVector(a.numCols());
 for (int i = 0; i < a.numCols(); ++i) {
  inverseDiagonal.setQuick(i, 1.0 / a.getQuick(i, i));
 }
}

代码示例来源：origin: apache/mahout

@Test
public void testAssignColumn() {
 double[] data = {2.1, 3.2, 4.3};
 test.assignColumn(1, new DenseVector(data));
 assertEquals("test[0][1]", 2.1, test.getQuick(0, 1), EPSILON);
 assertEquals("test[1][1]", 3.2, test.getQuick(1, 1), EPSILON);
 assertEquals("test[2][1]", 4.3, test.getQuick(2, 1), EPSILON);
}

代码示例来源：origin: apache/mahout

@Test
public void testAssignColumn() {
 double[] data = {2.1, 3.2, 4.3};
 test.assignColumn(1, new DenseVector(data));
 assertEquals("test[0][1]", 2.1, test.getQuick(0, 1), EPSILON);
 assertEquals("test[1][1]", 3.2, test.getQuick(1, 1), EPSILON);
 assertEquals("test[2][1]", 4.3, test.getQuick(2, 1), EPSILON);
}

代码示例来源：origin: apache/mahout

@Test
public void testAssignRow() {
 double[] data = {2.1, 3.2};
 test.assignRow(1, new DenseVector(data));
 assertEquals("test[1][0]", 2.1, test.getQuick(1, 0), EPSILON);
 assertEquals("test[1][1]", 3.2, test.getQuick(1, 1), EPSILON);
}

代码示例来源：origin: apache/mahout

@Test
public void testCopy() {
 Matrix copy = test.clone();
 assertTrue("wrong class", copy instanceof MatrixView);
 for (int row = 0; row < test.rowSize(); row++) {
  for (int col = 0; col < test.columnSize(); col++) {
   assertEquals("value[" + row + "][" + col + ']',
     test.getQuick(row, col), copy.getQuick(row, col), EPSILON);
  }
 }
}

代码示例来源：origin: apache/mahout

@Test
public void testGetQuick() {
 for (int row = 0; row < test.rowSize(); row++) {
  for (int col = 0; col < test.columnSize(); col++) {
   assertEquals("value[" + row + "][" + col + ']', values[row][col], test
     .getQuick(row, col), EPSILON);
  }
 }
}

代码示例来源：origin: apache/mahout

@Test
public void testAssignDouble() {
 test.assign(4.53);
 for (int row = 0; row < test.rowSize(); row++) {
  for (int col = 0; col < test.columnSize(); col++) {
   assertEquals("value[" + row + "][" + col + ']', 4.53, test.getQuick(
     row, col), EPSILON);
  }
 }
}

代码示例来源：origin: apache/mahout

@Test
public void testAssignDoubleArrayArray() {
 test.assign(new double[3][2]);
 for (int row = 0; row < test.rowSize(); row++) {
  for (int col = 0; col < test.columnSize(); col++) {
   assertEquals("value[" + row + "][" + col + ']', 0.0, test.getQuick(row,
     col), EPSILON);
  }
 }
}

代码示例来源：origin: apache/mahout

@Test
public void testAssignUnaryFunction() {
 test.assign(Functions.NEGATE);
 for (int row = 0; row < test.rowSize(); row++) {
  for (int col = 0; col < test.columnSize(); col++) {
   assertEquals("value[" + row + "][" + col + ']',
     -values[row + 1][col + 1], test.getQuick(row, col), EPSILON);
  }
 }
}

代码示例来源：origin: apache/mahout

@Test
public void testAssignDoubleArrayArray() {
 test.assign(new double[3][2]);
 for (int row = 0; row < test.rowSize(); row++) {
  for (int col = 0; col < test.columnSize(); col++) {
   assertEquals("value[" + row + "][" + col + ']', 0.0, test.getQuick(row,
     col), EPSILON);
  }
 }
}

代码示例来源：origin: apache/mahout

@Test
public void testMinus() {
 Matrix value = test.minus(test);
 for (int row = 0; row < test.rowSize(); row++) {
  for (int col = 0; col < test.columnSize(); col++) {
   assertEquals("value[" + row + "][" + col + ']', 0.0, value.getQuick(
     row, col), EPSILON);
  }
 }
}

代码示例来源：origin: apache/mahout

@Test
public void testViewPart() {
 int[] offset = {1, 1};
 int[] size = {2, 1};
 Matrix view = test.viewPart(offset, size);
 for (int row = 0; row < view.rowSize(); row++) {
  for (int col = 0; col < view.columnSize(); col++) {
   assertEquals("value[" + row + "][" + col + ']',
     values[row + 2][col + 2], view.getQuick(row, col), EPSILON);
  }
 }
}

代码示例来源：origin: apache/mahout

@Test
public void testAssignDouble() {
 test.assign(4.53);
 for (int row = 0; row < test.rowSize(); row++) {
  for (int col = 0; col < test.columnSize(); col++) {
   assertEquals("value[" + row + "][" + col + ']', 4.53, test.getQuick(
     row, col), EPSILON);
  }
 }
}

代码示例来源：origin: apache/mahout

@Test
public void testPlusMatrix() {
 Matrix value = test.plus(test);
 for (int row = 0; row < test.rowSize(); row++) {
  for (int col = 0; col < test.columnSize(); col++) {
   assertEquals("value[" + row + "][" + col + ']', values[row][col] * 2,
     value.getQuick(row, col), EPSILON);
  }
 }
}

代码示例来源：origin: apache/mahout

@Test
public void testTranspose() {
 Matrix transpose = test.transpose();
 assertEquals("rows", test.columnSize(), transpose.rowSize());
 assertEquals("cols", test.rowSize(), transpose.columnSize());
 for (int row = 0; row < test.rowSize(); row++) {
  for (int col = 0; col < test.columnSize(); col++) {
   assertEquals("value[" + row + "][" + col + ']',
     test.getQuick(row, col), transpose.getQuick(col, row), 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);
}

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);
  }
 }
}