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

Vector.getNumNondefaultElements介绍

[英]Return the number of values in the recipient which are not the default value. For instance, for a sparse vector, this would be the number of non-zero values.
[中]返回收件人中非默认值的值数。例如，对于稀疏向量，这将是非零值的数量。

代码示例

代码示例来源：origin: apache/mahout

/** Return the number of values in the recipient */
@Override
public int getNumNondefaultElements() {
 return vector.getNumNondefaultElements();
}

代码示例来源：origin: apache/mahout

@Override
public int[] getNumNondefaultElements() {
 int[] result = new int[2];
 result[COL] = columnVectors.length;
 for (int col = 0; col < columnSize(); col++) {
  result[ROW] = Math.max(result[ROW], columnVectors[col]
   .getNumNondefaultElements());
 }
 return result;
}

代码示例来源：origin: apache/mahout

@Override
public int[] getNumNondefaultElements() {
 int[] result = new int[2];
 result[ROW] = rowVectors.length;
 for (int row = 0; row < rowSize(); row++) {
  result[COL] = Math.max(result[COL], rowVectors[row].getNumNondefaultElements());
 }
 return result;
}

代码示例来源：origin: apache/mahout

@Override
public double estimateCost(Vector x, Vector y, DoubleDoubleFunction f) {
 return Math.min(x.getNumNondefaultElements() * x.getIteratorAdvanceCost(),
   y.getNumNondefaultElements() * y.getIteratorAdvanceCost());
}

代码示例来源：origin: apache/mahout

@Override
public double estimateCost(Vector x, Vector y, DoubleDoubleFunction f) {
 return Math.max(x.getNumNondefaultElements() * x.getIteratorAdvanceCost(),
   y.getNumNondefaultElements() * y.getIteratorAdvanceCost());
}

代码示例来源：origin: apache/mahout

@Override
public double estimateCost(Vector x, Vector y, DoubleDoubleFunction fa, DoubleDoubleFunction fc) {
 return Math.min(x.getNumNondefaultElements() * x.getIteratorAdvanceCost(),
   y.getNumNondefaultElements() * y.getIteratorAdvanceCost());
}

代码示例来源：origin: apache/mahout

@Override
public double estimateCost(Vector x, Vector y, DoubleDoubleFunction f) {
 return Math.max(x.getNumNondefaultElements() * x.getIteratorAdvanceCost(),
   y.getNumNondefaultElements() * y.getIteratorAdvanceCost());
}

代码示例来源：origin: apache/mahout

@Override
public double estimateCost(Vector x, Vector y, DoubleDoubleFunction fa, DoubleDoubleFunction fc) {
 return Math.max(x.getNumNondefaultElements() * x.getIteratorAdvanceCost(),
   y.getNumNondefaultElements() * y.getIteratorAdvanceCost());
}

代码示例来源：origin: apache/mahout

@Override
public int[] getNumNondefaultElements() {
 int[] result = new int[2];
 result[ROW] = rowVectors.size();
 for (Vector row : rowVectors.values()) {
  result[COL] = Math.max(result[COL], row.getNumNondefaultElements());
 }
 return result;
}

代码示例来源：origin: apache/mahout

@Override
public double estimateCost(Vector x, Vector y, DoubleDoubleFunction fa, DoubleDoubleFunction fc) {
 return Math.max(x.getNumNondefaultElements() * x.getIteratorAdvanceCost() * y.getLookupCost(),
   y.getNumNondefaultElements() * y.getIteratorAdvanceCost() * x.getLookupCost());
}

代码示例来源：origin: apache/mahout

@Override
public double estimateCost(Vector x, Vector y, DoubleDoubleFunction f) {
 return Math.max(x.getNumNondefaultElements() * x.getIteratorAdvanceCost() * y.getLookupCost(),
   y.getNumNondefaultElements() * y.getIteratorAdvanceCost() * x.getLookupCost());
}

代码示例来源：origin: apache/mahout

@Override
public double estimateCost(Vector x, Vector y, DoubleDoubleFunction f) {
 return Math.max(x.getNumNondefaultElements() * x.getIteratorAdvanceCost() * y.getLookupCost(),
   y.getNumNondefaultElements() * y.getIteratorAdvanceCost() * x.getLookupCost());
}
@Override

代码示例来源：origin: apache/mahout

public RandomAccessSparseVector(Vector other) {
 this(other.size(), other.getNumNondefaultElements());
 for (Element e : other.nonZeroes()) {
  values.put(e.index(), e.get());
 }
}

代码示例来源：origin: apache/mahout

@Test
public void testViewRow() {
 Vector row = test.viewRow(1);
 assertEquals("row size", 2, row.getNumNondefaultElements());
}

代码示例来源：origin: apache/mahout

@Test
public void testViewColumn() {
 Vector column = test.viewColumn(1);
 assertEquals("row size", 3, column.getNumNondefaultElements());
}

代码示例来源：origin: apache/mahout

@Override
public Vector times(Vector that) {
 if (size != that.size()) {
  throw new CardinalityException(size, that.size());
 }
 if (this.getNumNondefaultElements() <= that.getNumNondefaultElements()) {
  return createOptimizedCopy(this).assign(that, Functions.MULT);
 } else {
  return createOptimizedCopy(that).assign(this, Functions.MULT);
 }
}

代码示例来源：origin: apache/mahout

@Test
public void testViewColumn() {
 Vector column = test.viewColumn(1);
 assertEquals("row size", 3, column.getNumNondefaultElements());
 int i = 0;
 for (double x : new double[]{3.3, 5.5, 7.7}) {
  assertEquals(x, column.get(i++), 0);
 }
}

代码示例来源：origin: apache/mahout

@Test
public void testViewPart() throws Exception {
 Vector part = test.viewPart(1, 2);
 assertEquals("part size", 2, part.getNumNondefaultElements());
 for (int i = 0; i < part.size(); i++) {
  assertEquals("part[" + i + ']', values[OFFSET + i + 1], part.get(i), EPSILON);
 }
}

代码示例来源：origin: apache/mahout

@Test
public void testViewPart() {
 Vector part = test.viewPart(1, 2);
 assertEquals("part size", 2, part.getNumNondefaultElements());
 for (int i = 0; i < part.size(); i++) {
  assertEquals("part[" + i + ']', test.get(i+1), part.get(i), 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);
}