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java.lang.Object edu.cmu.minorthird.classify.experiments.StratifiedCrossValSplitter
public class StratifiedCrossValSplitter
Works with datasets of binary examples. Splits POS and NEG examples into k separate disjoints folds, separately, and then returns k train/test splits where each train set is the union of k-1 folds, and the test set is the k-th fold. Does NOT preserve subpopulation information.
Constructor Summary | |
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StratifiedCrossValSplitter()
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StratifiedCrossValSplitter(int folds)
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StratifiedCrossValSplitter(java.util.Random random,
int folds)
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Method Summary | |
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int |
getNumPartitions()
Return the number of partitions produced by the last call to split() |
java.util.Iterator<Example> |
getTest(int k)
Return an iterator over the test cases in the k-th split. |
java.util.Iterator<Example> |
getTrain(int k)
Return an iterator over the training cases in the k-th split. |
void |
split(java.util.Iterator<Example> i)
Split the iterator into a number of train/test partitions. |
java.lang.String |
toString()
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Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait |
Constructor Detail |
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public StratifiedCrossValSplitter(java.util.Random random, int folds)
public StratifiedCrossValSplitter(int folds)
public StratifiedCrossValSplitter()
Method Detail |
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public void split(java.util.Iterator<Example> i)
Splitter
split
in interface Splitter<Example>
public int getNumPartitions()
Splitter
getNumPartitions
in interface Splitter<Example>
public java.util.Iterator<Example> getTrain(int k)
Splitter
getTrain
in interface Splitter<Example>
public java.util.Iterator<Example> getTest(int k)
Splitter
getTest
in interface Splitter<Example>
public java.lang.String toString()
toString
in class java.lang.Object
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