本文整理了Java中weka.core.Instances.numDistinctValues()方法的一些代码示例，展示了Instances.numDistinctValues()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。Instances.numDistinctValues()方法的具体详情如下：
包路径：weka.core.Instances
类名称：Instances
方法名：numDistinctValues

Instances.numDistinctValues介绍

[英]Returns the number of distinct values of a given attribute. The value 'missing' is not counted.
[中]返回给定属性的不同值的数目。值“缺失”不计算在内。

代码示例

代码示例来源：origin: com.googlecode.obvious/obviousx-weka

@Override
public int numDistinctValues(Attribute att) {
 return super.numDistinctValues(att);
}

代码示例来源：origin: com.googlecode.obvious/obviousx-weka

@Override
public int numDistinctValues(int arg0) {
 return super.numDistinctValues(arg0);
}

代码示例来源：origin: nz.ac.waikato.cms.weka/weka-stable

/**
 * Returns the number of distinct values of a given attribute. The value
 * 'missing' is not counted.
 * 
 * @param att the attribute
 * @return the number of distinct values of a given attribute
 */
public/* @pure@ */int numDistinctValues(/* @non_null@ */Attribute att) {
 return numDistinctValues(att.index());
}

代码示例来源：origin: Waikato/weka-trunk

/**
 * Returns the number of distinct values of a given attribute. The value
 * 'missing' is not counted.
 * 
 * @param att the attribute
 * @return the number of distinct values of a given attribute
 */
public/* @pure@ */int numDistinctValues(/* @non_null@ */Attribute att) {
 return numDistinctValues(att.index());
}

代码示例来源：origin: nz.ac.waikato.cms.weka/weka-stable

/**
 * Compute the number of all possible conditions that could appear in a rule
 * of a given data. For nominal attributes, it's the number of values that
 * could appear; for numeric attributes, it's the number of values * 2, i.e.
 * <= and >= are counted as different possible conditions.
 * 
 * @param data the given data
 * @return number of all conditions of the data
 */
public static double numAllConditions(Instances data) {
 double total = 0;
 Enumeration<Attribute> attEnum = data.enumerateAttributes();
 while (attEnum.hasMoreElements()) {
  Attribute att = attEnum.nextElement();
  if (att.isNominal()) {
   total += att.numValues();
  } else {
   total += 2.0 * data.numDistinctValues(att);
  }
 }
 return total;
}

代码示例来源：origin: Waikato/wekaDeeplearning4j

/**
 * Validate a data split of train and validation data
 *
 * @param trainData Training data
 * @param valData Validation data
 * @throws WekaException Invalid validation split
 */
protected void validateSplit(Instances trainData, Instances valData) throws WekaException {
 if (earlyStopping.getValidationSetPercentage() < 10e-8) {
  // Use no validation set at all
  return;
 }
 int classIndex = trainData.classIndex();
 int valDataNumDinstinctClassValues = valData.numDistinctValues(classIndex);
 int trainDataNumDistinctClassValues = trainData.numDistinctValues(classIndex);
 if (trainData.numClasses() > 1
   && valDataNumDinstinctClassValues != trainDataNumDistinctClassValues) {
  throw new InvalidValidationPercentageException(
    "The validation data did not contain the same classes as the training data. "
      + "You should increase the validation percentage in the EarlyStopping configuration.");
 }
}

代码示例来源：origin: Waikato/weka-trunk

/**
 * Compute the number of all possible conditions that could appear in a rule
 * of a given data. For nominal attributes, it's the number of values that
 * could appear; for numeric attributes, it's the number of values * 2, i.e.
 * <= and >= are counted as different possible conditions.
 * 
 * @param data the given data
 * @return number of all conditions of the data
 */
public static double numAllConditions(Instances data) {
 double total = 0;
 Enumeration<Attribute> attEnum = data.enumerateAttributes();
 while (attEnum.hasMoreElements()) {
  Attribute att = attEnum.nextElement();
  if (att.isNominal()) {
   total += att.numValues();
  } else {
   total += 2.0 * data.numDistinctValues(att);
  }
 }
 return total;
}

代码示例来源：origin: nz.ac.waikato.cms.weka/weka-stable

if (m_TrainInstances.numDistinctValues(i) <= 1) {
 deleteCols.addElement(i);

代码示例来源：origin: nz.ac.waikato.cms.weka/weka-stable

if (m_trainInstances.numDistinctValues(i) <= 1) {
 deleteCols.addElement(new Integer(i));

代码示例来源：origin: Waikato/weka-trunk

if (m_TrainInstances.numDistinctValues(i) <= 1) {
 deleteCols.addElement(i);

代码示例来源：origin: Waikato/weka-trunk

if (m_trainInstances.numDistinctValues(i) <= 1) {
 deleteCols.addElement(new Integer(i));