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## de.jstacs.motifDiscovery
Class SignificantMotifOccurrencesFinder

    java.lang.Object
      de.jstacs.motifDiscovery.SignificantMotifOccurrencesFinder

    public class SignificantMotifOccurrencesFinder

extends Object

This class enables the user to predict motif occurrences given a specific significance level.

Author:
  Jan Grau, Jens Keilwagen

Nested Class Summary
`static class` | `SignificantMotifOccurrencesFinder.RandomSeqType`

Constructor Summary
`SignificantMotifOccurrencesFinder(MotifDiscoverer disc, Sample bg, double sign)` This constructor creates an instance of `SignificantMotifOccurrencesFinder` that uses a `Sample` to determine the siginificance level.
`SignificantMotifOccurrencesFinder(MotifDiscoverer disc, SignificantMotifOccurrencesFinder.RandomSeqType type, boolean oneHistogram, int numSequences, double sign)` This constructor creates an instance of `SignificantMotifOccurrencesFinder` that uses the given `SignificantMotifOccurrencesFinder.RandomSeqType` to determine the siginificance level.

Method Summary
`Sample` | `annotateMotif(int startPos, Sample data, int motifIndex)` This method annotates a `Sample` starting in each sequence at `startPos`.
`Sample` | `annotateMotif(int startPos, Sample data, int motifIndex, int addMax, boolean addAnnotation)` This method annotates a `Sample` starting in each sequence at `startPos`.
`Sample` | `annotateMotif(Sample data, int motifIndex)` This method annotates a `Sample`.
`Sample` | `annotateMotif(Sample data, int motifIndex, int addMax)` This method annotates a `Sample`.
`MotifAnnotation[]` | `findSignificantMotifOccurrences(int motif, Sequence seq, int start)` This method finds the significant motif occurrences in the sequence.
`MotifAnnotation[]` | `findSignificantMotifOccurrences(int motif, Sequence seq, int addMax, int start)` This method finds the significant motif occurrences in the sequence.
`Sample` | `getBindingSites(int startPos, Sample data, int motifIndex, int addMax, int addLeft, int addRight)` This method returns a `Sample` containing the predicted binding sites.
`Sample` | `getBindingSites(Sample data, int motifIndex)` This method returns a `Sample` containing the predicted binding sites.
`double` | `getFactorForAucPR()` This method returns a factor that must be multiplied to scores for computing PR curves.
`int` | `getNumberOfBoundSequences(Sample data, int motifIndex)` Returns the number of sequences in `data` that are predicted to be bound at least once by motif no.
`double` | `getOffsetForAucPR()` This method returns an offset that must be added to scores for computing PR curves.
`IntList` | `getStartPositions(int startPos, Sample data, int motifIndex, int addMax)` This method returns a list of start positions of binding sites.
`double[][]` | `getValuesForEachNucleotide(Sample data, int component, int motif, boolean addOnlyBest)` This method determines a score for each possible starting position in each of the sequences in `data` that this position is covered by at least one motif occurrence of the motif with index `index` in the component `component`.

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

Constructor Detail

### SignificantMotifOccurrencesFinder

    public SignificantMotifOccurrencesFinder(MotifDiscoverer disc,
                                             SignificantMotifOccurrencesFinder.RandomSeqType type,
                                             boolean oneHistogram,
                                             int numSequences,
                                             double sign)

  This constructor creates an instance of `SignificantMotifOccurrencesFinder` that uses the given `SignificantMotifOccurrencesFinder.RandomSeqType` to determine the siginificance level.

  Parameters:
    `disc` - the `MotifDiscoverer` for the prediction
    `type` - the type that determines how the significance level is determined
    `oneHistogram` - a switch to decide whether to use one background distribution histogram for all sequence or sequence specific background distribution histograms
    `numSequences` - the number of sampled sequence instances used to determine the significance level
    `sign` - the significance level

### SignificantMotifOccurrencesFinder

    public SignificantMotifOccurrencesFinder(MotifDiscoverer disc,
                                             Sample bg,
                                             double sign)

  This constructor creates an instance of `SignificantMotifOccurrencesFinder` that uses a `Sample` to determine the siginificance level.

  Parameters:
    `disc` - the `MotifDiscoverer` for the prediction
    `bg` - the background data set
    `sign` - the significance level

Method Detail

### findSignificantMotifOccurrences

    public MotifAnnotation[] findSignificantMotifOccurrences(int motif,
                                                             Sequence seq,
                                                             int start)
                                                      throws Exception

  This method finds the significant motif occurrences in the sequence.

  Parameters:
    `motif` - the motif index
    `seq` - the sequence
    `start` - the start position
  Returns:
    an array of `MotifAnnotation` for the sequence
  Throws:
    `Exception` - if the background sample could not be created, or some of the scores could not be computed

### findSignificantMotifOccurrences

    public MotifAnnotation[] findSignificantMotifOccurrences(int motif,
                                                             Sequence seq,
                                                             int addMax,
                                                             int start)
                                                      throws Exception

  This method finds the significant motif occurrences in the sequence.

  Parameters:
    `motif` - the motif index
    `seq` - the sequence
    `addMax` - the number of motif occurrences that can at most be annotated
    `start` - the start position
  Returns:
    an array of `MotifAnnotation` for the sequence
  Throws:
    `Exception` - if the background sample could not be created, or some of the scores could not be computed

### annotateMotif

    public Sample annotateMotif(Sample data,
                                int motifIndex)
                         throws Exception

  This method annotates a `Sample`.

  Parameters:
    `data` - the `Sample`
    `motifIndex` - the index of the motif
  Returns:
    an annotated `Sample`
  Throws:
    `Exception` - if something went wrong
  See Also:
    `annotateMotif(int, Sample, int)`

### annotateMotif

    public Sample annotateMotif(int startPos,
                                Sample data,
                                int motifIndex)
                         throws Exception

  This method annotates a `Sample` starting in each sequence at `startPos`.

  Parameters:
    `startPos` - the start position used for all sequences
    `data` - the `Sample`
    `motifIndex` - the index of the motif
  Returns:
    an annotated `Sample`
  Throws:
    `Exception` - if something went wrong
  See Also:
    `annotateMotif(int, Sample, int)`

### annotateMotif

    public Sample annotateMotif(Sample data,
                                int motifIndex,
                                int addMax)
                         throws Exception

  This method annotates a `Sample`. At most, `addMax` motif occurrences of the motif instance will be annotated.

  Parameters:
    `data` - the `Sample`
    `motifIndex` - the index of the motif
    `addMax` - the number of motif occurrences that can at most be annotated for each motif instance
  Returns:
    an annotated `Sample`
  Throws:
    `Exception` - if something went wrong
  See Also:
    `annotateMotif(int, Sample, int)`

### annotateMotif

    public Sample annotateMotif(int startPos,
                                Sample data,
                                int motifIndex,
                                int addMax,
                                boolean addAnnotation)
                         throws Exception

  This method annotates a `Sample` starting in each sequence at `startPos`. At most, `addMax` motif occurrences of the motif instance will be annotated.

  Parameters:
    `startPos` - the start position used for all sequences
    `data` - the `Sample`
    `motifIndex` - the index of the motif
    `addMax` - the number of motif occurrences that can at most be annotated for each motif instance
    `addAnnotation` - a switch whether to add or replace the current annotation
  Returns:
    an annotated `Sample`
  Throws:
    `Exception` - if something went wrong
  See Also:
    `annotateMotif(int, Sample, int)`

### getBindingSites

    public Sample getBindingSites(Sample data,
                                  int motifIndex)
                           throws Exception

  This method returns a `Sample` containing the predicted binding sites.

  Parameters:
    `data` - the `Sample`
    `motifIndex` - the index of the motif
  Returns:
    a `Sample` containing the predicted binding sites
  Throws:
    `Exception` - if something went wrong

### getBindingSites

    public Sample getBindingSites(int startPos,
                                  Sample data,
                                  int motifIndex,
                                  int addMax,
                                  int addLeft,
                                  int addRight)
                           throws Exception

  This method returns a `Sample` containing the predicted binding sites.

  Parameters:
    `startPos` - the start position used for all sequences
    `data` - the `Sample`
    `motifIndex` - the index of the motif
    `addMax` - the number of motif occurrences that can at most be annotated for each motif instance
    `addLeft` - number of positions added to the left of the predicted motif occurrence
    `addRight` - number of positions added to the right of the predicted motif occurrence
  Returns:
    a `Sample` containing the predicted binding sites
  Throws:
    `Exception` - if something went wrong

### getStartPositions

    public IntList getStartPositions(int startPos,
                                     Sample data,
                                     int motifIndex,
                                     int addMax)
                              throws Exception

  This method returns a list of start positions of binding sites.

  Parameters:
    `startPos` - the start position used for all sequences
    `data` - the `Sample`
    `motifIndex` - the index of the motif
    `addMax` - the number of motif occurrences that can at most be annotated for each motif instance
  Returns:
    a list of start positions
  Throws:
    `Exception` - if something went wrong

### getNumberOfBoundSequences

    public int getNumberOfBoundSequences(Sample data,
                                         int motifIndex)
                                  throws Exception

  Returns the number of sequences in `data` that are predicted to be bound at least once by motif no. `motif`.

  Parameters:
    `data` - the data
    `motifIndex` - the index of the motif
  Returns:
    the number of sequences in `data` bound by motif `motif`
  Throws:
    `Exception` - if the background sample for the prediction could not be created or some of the scores could not be computed

### getOffsetForAucPR

    public double getOffsetForAucPR()

  This method returns an offset that must be added to scores for computing PR curves. If this `SignificantMotifOccurrencesFinder` was instantiated using `oneHistogram=true`, the `getValuesForEachNucleotide(Sample, int, int, boolean)` returns scores and no offset is needed. Otherwise, it returns p-values and, hence, 1-(p-value) must be used for the PR curve and the offset is 1.

  Returns:
    the offset
  See Also:
    `MotifDiscoveryAssessment.getSortedValuesForMotifAndFlanking(Sample, double[][], double, double, String)`

### getFactorForAucPR

    public double getFactorForAucPR()

  This method returns a factor that must be multiplied to scores for computing PR curves. If this `SignificantMotifOccurrencesFinder` was instantiated using `oneHistogram=true`, the `getValuesForEachNucleotide(Sample, int, int, boolean)` returns scores and a factor of 1 is appropriate. Otherwise, it returns p-values and, hence, 1-(p-value) must be used for the PR curve and the factor is -1.

  Returns:
    the factor
  See Also:
    `MotifDiscoveryAssessment.getSortedValuesForMotifAndFlanking(Sample, double[][], double, double, String)`

### getValuesForEachNucleotide

    public double[][] getValuesForEachNucleotide(Sample data,
                                                 int component,
                                                 int motif,
                                                 boolean addOnlyBest)
                                          throws Exception

  This method determines a score for each possible starting position in each of the sequences in `data` that this position is covered by at least one motif occurrence of the motif with index `index` in the component `component`. If the `SignificantMotifOccurrencesFinder` was constructed using `oneHistogram=true` the returned values are arbitrary scores, and p-values otherwise.

  Parameters:
    `data` - the `Sample`
    `component` - the component index
    `motif` - the motif index
    `addOnlyBest` - a switch whether to add only the best
  Returns:
    an array containing for each sequence an array with the scores for each starting position in the sequence
  Throws:
    `Exception` - if something went wrong during the computation of the scores of the `MotifDiscoverer`
  See Also:
    `MotifDiscoveryAssessment.getSortedValuesForMotifAndFlanking(Sample, double[][], double, double, String)`, `getOffsetForAucPR()`, `getFactorForAucPR()`

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