SamplingScoreBasedClassifier

java.lang.Object
- de.jstacs.classifiers.AbstractClassifier
- - de.jstacs.classifiers.AbstractScoreBasedClassifier
  - - de.jstacs.classifiers.differentiableSequenceScoreBased.sampling.SamplingScoreBasedClassifier

All Implemented Interfaces:

Storable, Cloneable

Direct Known Subclasses:

SamplingGenDisMixClassifier
```
public abstract class SamplingScoreBasedClassifier
extends AbstractScoreBasedClassifier
```
A classifier that samples the parameters of SamplingDifferentiableStatisticalModels by the Metropolis-Hastings algorithm. The distribution the parameters are sampled from is the distribution $P(\vec{\lambda}^{t})$ represented by the DiffSSBasedOptimizableFunction returned by getFunction(DataSet[], double[][]). As proposal distribution, a Gaussian distribution with given sampling variance is used for each parameter. Specifically, a new set of parameters $\vec{\lambda}^{t}$ is drawn from a proposal distribution $Q(\vec{\lambda}^{t} | \vec{\lambda}^{t-1})$ , where
$Q(\vec{\lambda}^{t}|\vec{\lambda}^{t-1}) = \prod_{i} \mathcal{N}(\lambda_i^{t}|\lambda_i^{t-1},\sigma_i^2)$
and $\sigma_i^2$ is the sampling variance for parameter $\lambda_i$ . The sampling variances are adapted to the size of the event space of each parameter based on a class-dependent variance provided to the constructor. This adaption depends on the correct implementation of DifferentiableStatisticalModel.getSizeOfEventSpaceForRandomVariablesOfParameter(int). Let be the size of the event space of the random variable of parameter $\lambda_i$ , and let $\sigma^{2}$ be the class-dependent variance for the SamplingDifferentiableStatisticalModel that $\lambda_i$ is a parameter of. Then $\sigma_i:=\sigma^{2}*s_i$ . If then $\sigma_i:=\sigma^{2}$ . After a new set of parameters $\vec{\lambda}^{t}$ has been drawn, the sampling process decides if this new set of parameters is accepted according to the distribution $P(\vec{\lambda}^{t})$ that we want to sample from. Specifically, the parameters are accepted, iff.
$\alpha < \frac{ P(\vec{\lambda}^{t})Q(\vec{\lambda}^{t-1} | \vec{\lambda}^{t}) }{P(\vec{\lambda}^{t-1}) Q(\vec{\lambda}^{t} | \vec{\lambda}^{t-1})},$
where $\alpha$ is drawn from a uniform distribution in , i.e. Random.nextDouble(). Otherwise, the parameters are rejected and $\vec{\lambda}^{t}:=\vec{\lambda}^{t-1}$ . Since the Gaussian distribution is symmetric around its mean, $Q(\vec{\lambda}^{t-1} | \vec{\lambda}^{t})=Q(\vec{\lambda}^{t} | \vec{\lambda}^{t-1})$ , both terms cancel, and the acceptance probability depends only on the current and previous values of . All sampled parameters are stored to separate temporary files for each concurrent sampling run by an internal SamplingComponent. The contents of these files are stored together with the remaining representation of the SamplingScoreBasedClassifier, if AbstractClassifier.toXML() is called, and, hence, can be stored to a monolithic file containing all information for, e.g., later classification procedures. For determining the length of the burn-in phase and, as a consequence, the beginning of the stationary phase, a BurnInTest can be provided to the constructor of the classifier.

Author:

Jan Grau

Nested Class Summary

Nested Classes
Modifier and Type	Class and Description
`protected class`	`SamplingScoreBasedClassifier.DiffSMSamplingComponent` The `SamplingComponent` that handles storing and loading sampled parameters values to and from files.
`static class`	`SamplingScoreBasedClassifier.SamplingScheme` Sampling scheme for sampling the parameters of the scoring functions.

Nested classes/interfaces inherited from class de.jstacs.classifiers.AbstractScoreBasedClassifier
AbstractScoreBasedClassifier.DoubleTableResult

Field Summary

Fields
Modifier and Type	Field and Description
`protected Integer`	`burnInLength` The length of the burn-in phase as determined by `burnInTest`
`protected BurnInTest`	`burnInTest` The `BurnInTest`, may be null for no test
`protected double[]`	`currentParameters` the currently accepted parameters
`protected double`	`currentScore` The score achieved using `currentParameters`
`protected double[]`	`initParameters` The initial parameters if set by `setInitParameters(double[])`, `null` otherwise
`protected double[][]`	`lastParameters` The last accepted parameters for all samplings, backup for iterative sampling when checking for `BurnInTest`
`protected double[]`	`lastScore` The scores yielded for the parameters in `lastParameters`
`protected SamplingScoreBasedClassifierParameterSet`	`params` Parameters
`protected double[]`	`previousParameters` The previously accepted parameters, backup for rollbacks
`protected SamplingDifferentiableStatisticalModel[]`	`scoringFunctions` `SamplingDifferentiableStatisticalModel`s

Constructor Summary

Constructors
Modifier	Constructor and Description
`protected`	`SamplingScoreBasedClassifier(SamplingScoreBasedClassifierParameterSet params, BurnInTest burnInTest, double[] classVariances, SamplingDifferentiableStatisticalModel... scoringFunctions)` Creates a new `SamplingScoreBasedClassifier` using the parameters in `params`, a specified `BurnInTest` (or `null` for no burn-in test), a set of sampling variances, which may be different for each of the classes (in analogy to equivalent sample size for the Dirichlet distribution), and set set of `SamplingDifferentiableStatisticalModel`s for each of the classes.
	`SamplingScoreBasedClassifier(StringBuffer xml)` This is the constructor for `Storable`.

Method Summary

All Methods Instance Methods Abstract Methods Concrete Methods
Modifier and Type	Method and Description
`protected double`	`doOneSamplingStep(Function function, SamplingScoreBasedClassifier.SamplingScheme scheme, double previousValue)` Performs one sampling step, i.e., one sampling of all parameter values.
`void`	`doSingleSampling(DataSet[] s, double[][] weights, int numSteps, String outfilePrefix)` Does a single sampling run for a predefined number of steps.
`protected void`	`extractFurtherClassifierInfosFromXML(StringBuffer xml)` Extracts further information of a classifier from an XML representation.
`double[]`	`getBestParameters()` Returns the sampled parameter values with the maximum value of the objective function
`CategoricalResult[]`	`getClassifierAnnotation()` Returns an array of `Result`s of dimension `AbstractClassifier.getNumberOfClasses()` that contains information about the classifier and for each class. `res[0] = new CategoricalResult( "classifier", "the kind of classifier", getInstanceName() ); res[1] = new CategoricalResult( "class info 0", "some information about the class", "info0" ); res[2] = new CategoricalResult( "class info 1", "some information about the class", "info1" ); ...`
`boolean`	`getDeleteOnExit()` Returns `true` if the temporary parameter files shall be deleted on exit of the program.
`protected abstract Function`	`getFunction(DataSet[] data, double[][] weights)` Returns the function that should be sampled from.
`protected StringBuffer`	`getFurtherClassifierInfos()` This method returns further information of a classifier as a `StringBuffer`.
`String`	`getInstanceName()` Returns a short description of the classifier.
`protected double[]`	`getMeanParameters(boolean testBurnIn, int minBurnInSteps)` Returns the mean parameters over all samplings of all stationary phases.
`protected int`	`getNumberOfParameters()` Returns the number of parameters of all internal `SamplingDifferentiableStatisticalModel`s.
`NumericalResultSet`	`getNumericalCharacteristics()` Returns the subset of numerical values that are also returned by `AbstractClassifier.getCharacteristics()`.
`protected SamplingScoreBasedClassifier.DiffSMSamplingComponent`	`getSamplingComponent()` Returns a sampling component suited for this `SamplingScoreBasedClassifier`
`protected double`	`getScore(Sequence seq, int cls, boolean check)` This method returns the score for a given `Sequence` and a given class.
`double[]`	`getScores(DataSet s)` This method returns the scores of the classifier for any `Sequence` in the `DataSet`.
`File`	`getTempDir()` Returns the directory for parameter files set in this `SamplingScoreBasedClassifier`.
`protected void`	`init(int starts, boolean adaptVariance, String outfilePrefix)` Initializes all internal fields and initializes the `scoringFunctions`s randomly
`boolean`	`isInitialized()` This method gives information about the state of the classifier.
`void`	`joinAndSetParameterFiles(boolean add, File... files)` Combines parameter files such that they are accepted as parameter files of this `SamplingScoreBasedClassifier`
`protected double`	`modifyFunctionValue(double value)` Allows for a modification of the value returned by the function obtained by `getFunction(DataSet[], double[][])`.
`protected void`	`precomputeBurnInLength(SamplingScoreBasedClassifier.DiffSMSamplingComponent sfsc)` Precomputes the length of the burn-in phase, e.g.
`protected void`	`sample(SamplingScoreBasedClassifier.DiffSMSamplingComponent sfsc, Function function)` Samples as many steps as needed to get into the stationary phase according to `burnInTest` and then samples the number of stationary steps as set in `params`.
`protected double`	`sampleNSteps(Function function, SamplingScoreBasedClassifier.DiffSMSamplingComponent component, BurnInTest test, int numSteps, SamplingScoreBasedClassifier.SamplingScheme scheme)` Samples a predefined number of steps appended to the current sampling
`void`	`setDeleteOnExit(boolean deleteOnExit)` If set to `true` (which is the default), the temporary files for storing sampled parameter values are deleted on exit of the program.
`void`	`setInitParameters(double[] parameters)` Sets the initial parameters of the sampling to `parameters`.
`protected void`	`setParameters(double[] currentParameters)` Sets the current parameters for the class weights and in all scoring functions
`void`	`setTempDir(File tempDir)` Sets the directory for parameter files set in this `SamplingScoreBasedClassifier`.
`String`	`toString()`
`void`	`train(DataSet[] s, double[][] weights)` This method trains a classifier over an array of weighted `DataSet` s.

Methods inherited from class de.jstacs.classifiers.AbstractScoreBasedClassifier
check, check, classify, classify, clone, createDefaultClassWeights, getClassWeight, getClassWeights, getMultiClassScores, getNumberOfClasses, getPValue, getPValue, getResults, getScore, setClassWeights, setClassWeights, setThresholdClassWeights

Methods inherited from class de.jstacs.classifiers.AbstractClassifier
classify, evaluate, evaluate, getAlphabetContainer, getCharacteristics, getLength, getXMLTag, toXML, train

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

- Field Detail
  - params
```
protected SamplingScoreBasedClassifierParameterSet params
```
    Parameters
  - scoringFunctions
```
protected SamplingDifferentiableStatisticalModel[] scoringFunctions
```
    SamplingDifferentiableStatisticalModels
  - currentParameters
```
protected double[] currentParameters
```
    the currently accepted parameters
  - initParameters
```
protected double[] initParameters
```
    The initial parameters if set by setInitParameters(double[]), null otherwise
  - currentScore
```
protected double currentScore
```
    The score achieved using currentParameters
  - previousParameters
```
protected double[] previousParameters
```
    The previously accepted parameters, backup for rollbacks
  - lastParameters
```
protected double[][] lastParameters
```
    The last accepted parameters for all samplings, backup for iterative sampling when checking for BurnInTest
  - lastScore
```
protected double[] lastScore
```
    The scores yielded for the parameters in lastParameters
  - burnInTest
```
protected BurnInTest burnInTest
```
    The BurnInTest, may be null for no test
  - burnInLength
```
protected Integer burnInLength
```
    The length of the burn-in phase as determined by burnInTest
- Constructor Detail
  - SamplingScoreBasedClassifier
```
public SamplingScoreBasedClassifier(StringBuffer xml)
                             throws NonParsableException
```
    This is the constructor for Storable.
    
    Parameters:
    
    xml - the xml representation
    
    Throws:
    
    NonParsableException - if the representation could not be parsed.
  - SamplingScoreBasedClassifier
```
protected SamplingScoreBasedClassifier(SamplingScoreBasedClassifierParameterSet params,
                                       BurnInTest burnInTest,
                                       double[] classVariances,
                                       SamplingDifferentiableStatisticalModel... scoringFunctions)
                                throws CloneNotSupportedException
```
    Creates a new SamplingScoreBasedClassifier using the parameters in params, a specified BurnInTest (or null for no burn-in test), a set of sampling variances, which may be different for each of the classes (in analogy to equivalent sample size for the Dirichlet distribution), and set set of SamplingDifferentiableStatisticalModels for each of the classes.
    
    Parameters:
    
    params - the external parameters of this classifier
    
    burnInTest - the burn-in test (or null for no burn-in test)
    
    classVariances - the variances used for sampling for the parameters of each class
    
    scoringFunctions - the scoring functions for each of the classes
    
    Throws:
    
    CloneNotSupportedException - if the scoring functions or the burn-in test could not be cloned
    
    See Also:
    
    VarianceRatioBurnInTest
- Method Detail
  - getFurtherClassifierInfos
```
protected StringBuffer getFurtherClassifierInfos()
```
    Description copied from class: AbstractClassifier
    
    This method returns further information of a classifier as a StringBuffer. This method is used by the method AbstractClassifier.toXML() and should not be made public.
    
    Overrides:
    
    getFurtherClassifierInfos in class AbstractScoreBasedClassifier
    
    Returns:
    
    further information of a classifier as a StringBuffer
    
    See Also:
    
    AbstractClassifier.toXML()
  - extractFurtherClassifierInfosFromXML
```
protected void extractFurtherClassifierInfosFromXML(StringBuffer xml)
                                             throws NonParsableException
```
    Description copied from class: AbstractClassifier
    
    Extracts further information of a classifier from an XML representation. This method is used by the method AbstractClassifier.fromXML(StringBuffer) and should not be made public.
    
    Overrides:
    
    extractFurtherClassifierInfosFromXML in class AbstractScoreBasedClassifier
    
    Parameters:
    
    xml - the XML representation as StringBuffer
    
    Throws:
    
    NonParsableException - if the information could not be parsed out of the XML representation (the StringBuffer could not be parsed)
    
    See Also:
    
    AbstractClassifier.fromXML(StringBuffer)
  - getClassifierAnnotation
```
public CategoricalResult[] getClassifierAnnotation()
```
    Description copied from class: AbstractClassifier
    
    Returns an array of Results of dimension AbstractClassifier.getNumberOfClasses() that contains information about the classifier and for each class.
    
    res[0] = new CategoricalResult( "classifier", "the kind of classifier", getInstanceName() ); res[1] = new CategoricalResult( "class info 0", "some information about the class", "info0" ); res[2] = new CategoricalResult( "class info 1", "some information about the class", "info1" ); ...
    
    Specified by:
    
    getClassifierAnnotation in class AbstractClassifier
    
    Returns:
    
    an array of Results that contains information about the classifier
  - getNumericalCharacteristics
```
public NumericalResultSet getNumericalCharacteristics()
                                               throws Exception
```
    Description copied from class: AbstractClassifier
    
    Returns the subset of numerical values that are also returned by AbstractClassifier.getCharacteristics().
    
    Specified by:
    
    getNumericalCharacteristics in class AbstractClassifier
    
    Returns:
    
    the numerical characteristics
    
    Throws:
    
    Exception - if some of the characteristics could not be defined
  - getInstanceName
```
public String getInstanceName()
```
    Description copied from class: AbstractClassifier
    
    Returns a short description of the classifier.
    
    Specified by:
    
    getInstanceName in class AbstractClassifier
    
    Returns:
    
    a short description of the classifier
  - getFunction
```
protected abstract Function getFunction(DataSet[] data,
                                        double[][] weights)
                                 throws Exception
```
    Returns the function that should be sampled from.
    
    Parameters:
    
    data - the samples
    
    weights - the weights of the sequences of the samples
    
    Returns:
    
    the function that should be sampled from
    
    Throws:
    
    Exception - if the function could not be created
  - modifyFunctionValue
```
protected double modifyFunctionValue(double value)
```
    Allows for a modification of the value returned by the function obtained by getFunction(DataSet[], double[][]). This is for instance necessary in case of LogGenDisMixFunction to obtain a proper posterior or supervised posterior.
    
    Parameters:
    
    value - the original value
    
    Returns:
    
    the modified value
  - getSamplingComponent
```
protected SamplingScoreBasedClassifier.DiffSMSamplingComponent getSamplingComponent()
```
    Returns a sampling component suited for this SamplingScoreBasedClassifier
    
    Returns:
    
    the sampling component
  - getTempDir
```
public File getTempDir()
```
    Returns the directory for parameter files set in this SamplingScoreBasedClassifier. If this value is null, the default directory of the executing OS is used for the parameter files.
    
    Returns:
    
    the temp directory
  - setTempDir
```
public void setTempDir(File tempDir)
```
    Sets the directory for parameter files set in this SamplingScoreBasedClassifier. If tempDir is null, the default directory of the executing OS is used for the parameter files. If this value is reset after training, all sampled parameters will be lost. The value set by this method is not stored in the XML-representation.
    
    Parameters:
    
    tempDir - the temp directory
  - getDeleteOnExit
```
public boolean getDeleteOnExit()
```
    Returns true if the temporary parameter files shall be deleted on exit of the program.
    
    Returns:
    
    if temp files are deleted
  - setDeleteOnExit
```
public void setDeleteOnExit(boolean deleteOnExit)
                     throws Exception
```
    If set to true (which is the default), the temporary files for storing sampled parameter values are deleted on exit of the program. If this value is set to true it cannot be reset to false, again, after sampling started due to the restrictions of File.deleteOnExit(). If you want to retain those parameters, nonetheless, you can call AbstractClassifier.toXML() and save this StringBuffer, which also contains the sampled parameter values, somewhere. The value set by this method is not stored in the XML-representation.
    
    Parameters:
    
    deleteOnExit - if temp files shall be deleted on exit
    
    Throws:
    
    Exception - if set to false after sampling started
  - init
```
protected void init(int starts,
                    boolean adaptVariance,
                    String outfilePrefix)
             throws Exception
```
    Initializes all internal fields and initializes the scoringFunctionss randomly
    
    Parameters:
    
    starts - number of starts
    
    adaptVariance - if true, variance is adapted to size of event space
    
    outfilePrefix - the prefix of the outfiles
    
    Throws:
    
    Exception - if the scoring functions could not be initialized
  - sampleNSteps
```
protected double sampleNSteps(Function function,
                              SamplingScoreBasedClassifier.DiffSMSamplingComponent component,
                              BurnInTest test,
                              int numSteps,
                              SamplingScoreBasedClassifier.SamplingScheme scheme)
                       throws Exception
```
    Samples a predefined number of steps appended to the current sampling
    
    Parameters:
    
    function - the objective function
    
    component - the sampling component with selected sampling
    
    test - the burn-in test
    
    numSteps - the number of steps
    
    scheme - the SamplingScoreBasedClassifier.SamplingScheme
    
    Returns:
    
    the value of the last accepted parameters
    
    Throws:
    
    Exception - if either the function could not be evaluated on the current parameters or the sampled parameters could not be stored
  - sample
```
protected void sample(SamplingScoreBasedClassifier.DiffSMSamplingComponent sfsc,
                      Function function)
               throws Exception
```
    Samples as many steps as needed to get into the stationary phase according to burnInTest and then samples the number of stationary steps as set in params.
    
    Parameters:
    
    sfsc - the current sampling component
    
    function - the objective function
    
    Throws:
    
    Exception - if the sampling could not be extended, e.g. due to evaluation errors
  - doOneSamplingStep
```
protected double doOneSamplingStep(Function function,
                                   SamplingScoreBasedClassifier.SamplingScheme scheme,
                                   double previousValue)
                            throws Exception
```
    Performs one sampling step, i.e., one sampling of all parameter values.
    
    Parameters:
    
    function - the objective function
    
    scheme - the SamplingScoreBasedClassifier.SamplingScheme
    
    previousValue - the value of the last sampling or minus infinity for the first sampling run
    
    Returns:
    
    the value of the last accepted parameter values or Double.NaN if none of the sampled parameters where accepted
    
    Throws:
    
    Exception - if the function could not be evaluated or an unknown SamplingScoreBasedClassifier.SamplingScheme was provided
  - getScore
```
protected double getScore(Sequence seq,
                          int cls,
                          boolean check)
                   throws IllegalArgumentException,
                          NotTrainedException,
                          Exception
```
    Description copied from class: AbstractScoreBasedClassifier
    
    This method returns the score for a given Sequence and a given class.
    
    Specified by:
    
    getScore in class AbstractScoreBasedClassifier
    
    Parameters:
    
    seq - the Sequence
    
    cls - the index of the class
    
    check - the switch to decide whether to check AlphabetContainer and the length of the Sequence or not
    
    Returns:
    
    the score for a given Sequence and a given class
    
    Throws:
    
    IllegalArgumentException - if something is wrong with the Sequence seq
    
    NotTrainedException - if the classifier is not trained
    
    Exception - if something went wrong
  - getScores
```
public double[] getScores(DataSet s)
                   throws Exception
```
    Description copied from class: AbstractScoreBasedClassifier
    
    This method returns the scores of the classifier for any Sequence in the DataSet. The scores are stored in the array according to the index of the Sequence in the DataSet.
    
    Only for 2-class-classifiers.
    
    Overrides:
    
    getScores in class AbstractScoreBasedClassifier
    
    Parameters:
    
    s - the DataSet
    
    Returns:
    
    the array of scores
    
    Throws:
    
    Exception - if something went wrong
  - setInitParameters
```
public void setInitParameters(double[] parameters)
```
    Sets the initial parameters of the sampling to parameters.
    
    Parameters:
    
    parameters - the initial parameters
  - setParameters
```
protected void setParameters(double[] currentParameters)
```
    Sets the current parameters for the class weights and in all scoring functions
    
    Parameters:
    
    currentParameters - the new parameter values
  - isInitialized
```
public boolean isInitialized()
```
    Description copied from class: AbstractClassifier
    
    This method gives information about the state of the classifier.
    
    Specified by:
    
    isInitialized in class AbstractClassifier
    
    Returns:
    
    true if the classifier is initialized and therefore able to classify sequences, otherwise false
  - doSingleSampling
```
public void doSingleSampling(DataSet[] s,
                             double[][] weights,
                             int numSteps,
                             String outfilePrefix)
                      throws Exception
```
    Does a single sampling run for a predefined number of steps.
    
    Parameters:
    
    s - the data
    
    weights - the weights for the data
    
    numSteps - the number of sampling steps
    
    outfilePrefix - the prefix of the outfile where the parameter values are stored
    
    Throws:
    
    Exception - if the scoring functions could not be initialized or the sampling could not be extended, e.g. due to evaluation errors
  - getNumberOfParameters
```
protected int getNumberOfParameters()
```
    Returns the number of parameters of all internal SamplingDifferentiableStatisticalModels.
    
    Returns:
    
    the number of parameters
  - train
```
public void train(DataSet[] s,
                  double[][] weights)
           throws Exception
```
    Description copied from class: AbstractClassifier
    This method trains a classifier over an array of weighted DataSet s. That is why the following has to be fulfilled:
    - s.length == weights.length
    - and for all i: weights[i] == null || s[i].getNumberOfElements() == weights[i].length.
    This method should work non-incrementally as the method AbstractClassifier.train(DataSet...).
    
    This method should check that the DataSets are defined over the underlying alphabet and length.
    Specified by:
    
    train in class AbstractClassifier
    
    Parameters:
    
    s - an array of DataSets
    
    weights - the weights for the DataSets
    
    Throws:
    
    Exception - if the weights are incorrect or the training did not succeed
    
    See Also:
    
    AbstractClassifier.train(DataSet...)
  - toString
```
public String toString()
```
    Overrides:
    
    toString in class Object
  - precomputeBurnInLength
```
protected void precomputeBurnInLength(SamplingScoreBasedClassifier.DiffSMSamplingComponent sfsc)
                               throws Exception
```
    Precomputes the length of the burn-in phase, e.g. useful for computing scores of multiple sequences
    
    Parameters:
    
    sfsc - the current sampling component
    
    Throws:
    
    Exception - if the parameters values could not be parsed
  - getBestParameters
```
public double[] getBestParameters()
                           throws Exception
```
    Returns the sampled parameter values with the maximum value of the objective function
    
    Returns:
    
    the best parameters
    
    Throws:
    
    Exception - if the parameters values could not be parsed
  - getMeanParameters
```
protected double[] getMeanParameters(boolean testBurnIn,
                                     int minBurnInSteps)
                              throws Exception
```
    Returns the mean parameters over all samplings of all stationary phases.
    
    Parameters:
    
    testBurnIn - true if the length of the burn-in phase shall be computed
    
    minBurnInSteps - minimum number of steps considered as burn-in
    
    Returns:
    
    the mean parameters
    
    Throws:
    
    Exception - if the parameters values could not be parsed
  - joinAndSetParameterFiles
```
public void joinAndSetParameterFiles(boolean add,
                                     File... files)
                              throws Exception
```
    Combines parameter files such that they are accepted as parameter files of this SamplingScoreBasedClassifier
    
    Parameters:
    
    add - if true, parameter files are appended to the current ones, i.e., the number of samplings is augmented by these files
    
    files - the parameter files
    
    Throws:
    
    Exception - if the parameter files could not be joined

Class SamplingScoreBasedClassifier

Nested Class Summary

Nested classes/interfaces inherited from class de.jstacs.classifiers.AbstractScoreBasedClassifier

Field Summary

Constructor Summary

Method Summary

Methods inherited from class de.jstacs.classifiers.AbstractScoreBasedClassifier

Methods inherited from class de.jstacs.classifiers.AbstractClassifier

Methods inherited from class java.lang.Object

Field Detail

params

scoringFunctions

currentParameters

initParameters

currentScore

previousParameters

lastParameters

lastScore

burnInTest

burnInLength

Constructor Detail

SamplingScoreBasedClassifier

SamplingScoreBasedClassifier

Method Detail

getFurtherClassifierInfos

extractFurtherClassifierInfosFromXML

getClassifierAnnotation

getNumericalCharacteristics

getInstanceName

getFunction

modifyFunctionValue

getSamplingComponent

getTempDir

setTempDir

getDeleteOnExit

setDeleteOnExit

init

sampleNSteps

sample

doOneSamplingStep

getScore

getScores

setInitParameters

setParameters

isInitialized

doSingleSampling

getNumberOfParameters

train

toString

precomputeBurnInLength

getBestParameters

getMeanParameters

joinAndSetParameterFiles