Overview | Package | Class | Tree | Deprecated | Index | Help
PREV CLASS NEXT CLASS | FRAMES NO FRAMES
SUMMARY: NESTED | FIELD | CONSTR | METHOD | DETAIL: FIELD | CONSTR | METHOD

## edu.msu.cme.rdp.classifier.rrnaclassifier
Class Classifier

    java.lang.Object
      edu.msu.cme.rdp.classifier.rrnaclassifier.Classifier

    public class Classifier

extends java.lang.Object

This is the class to do the classification.

Field Summary
`private float[]` | `accumulateProbArr`
`private int` | `MAX_NUM_OF_WORDS` The assumed maximum number of words per sequence.
`static int` | `MIN_GOOD_WORDS`
`static int` | `MIN_SEQ_LEN` The minimum number of bases per sequence.
`private int` | `NUM_OF_RUNS` The number of bootstrap trials.
`private float[][]` | `querySeq_wordProbArr`
`private TrainingInfo` | `trainingInfo`

Constructor Summary
`Classifier(TrainingInfo t)` Creates new Classifier.

Method Summary
`private void` | `addBestGenusNode(HierarchyTree node, java.util.List resultList)` Adds a single RankAssignment to the list of the classification results if a treenode is already included in the list, simply increases the confidence for that RankAssignment by 1, for easy calculation.
`(package private) void` | `addConfidence(HierarchyTree node, java.util.HashMap map)` increase the count of the RankAssignment in the map if match that node or any ancestor of that node.
`ClassificationResult` | `classify(Sequence pSeq)` Takes a query sequence, returns the classification result.
`private void` | `findAncestor(HierarchyTree root, RankAssignment curNode, java.util.List ancestorList)` Finds the ancestors of the given node up to the root.
`private java.util.List` | `getFinalResultList(java.util.HashMap map, HierarchyTree aNode)`
`private java.util.List` | `getGreedyPath(HierarchyTree root, java.util.List resultList)` Returns a list of RankAssignment in which root is the first item.
`private int` | `getRandomIndex(int maxi)` Generates a random integer in the range of 0 to the specified maximum integer.

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Field Detail

### trainingInfo

    private TrainingInfo trainingInfo

### NUM_OF_RUNS

    private final int NUM_OF_RUNS

  The number of bootstrap trials. Initially set to 100.

  See Also:
    Constant Field Values

### MAX_NUM_OF_WORDS

    private final int MAX_NUM_OF_WORDS

  The assumed maximum number of words per sequence. Initially set to 5000.

  See Also:
    Constant Field Values

### MIN_SEQ_LEN

    public static final int MIN_SEQ_LEN

  The minimum number of bases per sequence. Initially set to 200.

  See Also:
    Constant Field Values

### MIN_GOOD_WORDS

    public static final int MIN_GOOD_WORDS

See Also:
  Constant Field Values

### querySeq_wordProbArr

    private float[][] querySeq_wordProbArr

### accumulateProbArr

    private float[] accumulateProbArr

Constructor Detail

### Classifier

    Classifier(TrainingInfo t)

  Creates new Classifier.

Method Detail

### classify

    public ClassificationResult classify(Sequence pSeq)

  Takes a query sequence, returns the classification result. For each query sequence, first assign it to a genus node using all the words for calculation. Then randomly chooses one-eighth of the all overlapping words in the query to calculate the joint probability. The number of times a genus was selected out of the number of bootstrap trials was used as an estimate of confidence in the assignment to that genus.

  Throws:
    `ShortSequenceException` - if the sequence length is less than the minimum sequence length.

### addConfidence

    void addConfidence(HierarchyTree node,
                       java.util.HashMap map)

  increase the count of the RankAssignment in the map if match that node or any ancestor of that node.

  Parameters:
    `node` -
    `map` -

### getFinalResultList

    private java.util.List getFinalResultList(java.util.HashMap map,
                                              HierarchyTree aNode)

### addBestGenusNode

    private void addBestGenusNode(HierarchyTree node,
                                  java.util.List resultList)

  Adds a single RankAssignment to the list of the classification results if a treenode is already included in the list, simply increases the confidence for that RankAssignment by 1, for easy calculation. Later this confidence will be divided by NUM_OF_RUNS.

### findAncestor

    private void findAncestor(HierarchyTree root,
                              RankAssignment curNode,
                              java.util.List ancestorList)

  Finds the ancestors of the given node up to the root. The ancestors are kept in a list in which the root is the first item.

### getGreedyPath

    private java.util.List getGreedyPath(HierarchyTree root,
                                         java.util.List resultList)

  Returns a list of RankAssignment in which root is the first item. Each node in the list is the one which has the highest confidence among the children of the previous node. Algorithm: From the top rank, select the child that has the highest votes, traverse down to the bottom rank level.

### getRandomIndex

    private int getRandomIndex(int maxi)

  Generates a random integer in the range of 0 to the specified maximum integer.

Overview | Package | Class | Tree | Deprecated | Index | Help
PREV CLASS NEXT CLASS | FRAMES NO FRAMES
SUMMARY: NESTED | FIELD | CONSTR | METHOD | DETAIL: FIELD | CONSTR | METHOD