edu.stanford.nlp.stats
Class SimpleStatistics

java.lang.Object
  |
  +--edu.stanford.nlp.stats.SimpleStatistics

All Implemented Interfaces:

Statistics

public class SimpleStatistics

extends Object

implements Statistics

Statistics Module to count events and calculate statistics and probability measures.

Field Summary

boolean

debug

Constructor Summary

SimpleStatistics()

Method Summary

void	addFactor(Set randomVariables)
void	addFactor(String randomVariableString) Specify a joint distribution of variables over which joint statistics are to be kept.
void	clear()
double	count(Observation observation)
double	count(Observation observation, Set variables)
Distribution	distributionOver(DistributionDescriptor desc)
Map	distributionsOver(DistributionDescriptor desc, Set splitVariables)
Factor	getFactor(List variables)
Factor	getFactor(Set variables)
Measure	measureOver(MeasureDescriptor desc)
void	observe(Observation obs)
void	observe(Observation obs, double weight)
Set	variables() Returns a set of all the random variables that have been defined

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

debug

public boolean debug

Constructor Detail

SimpleStatistics

public SimpleStatistics()

Method Detail

variables

public Set variables()

Description copied from interface: Statistics

Returns a set of all the random variables that have been defined

Specified by:

variables in interface Statistics

observe

public void observe(Observation obs,
                    double weight)

Specified by:

observe in interface Statistics

observe

public void observe(Observation obs)

Specified by:

observe in interface Statistics

addFactor

public void addFactor(Set randomVariables)

addFactor

public void addFactor(String randomVariableString)

Description copied from interface: Statistics

Specify a joint distribution of variables over which joint statistics are to be kept.

Specified by:

addFactor in interface Statistics

Parameters:

randomVariableString - a string with the names of each variable separated by whitespace

clear

public void clear()

Specified by:

clear in interface Statistics

distributionOver

public Distribution distributionOver(DistributionDescriptor desc)

Specified by:

distributionOver in interface Statistics

distributionsOver

public Map distributionsOver(DistributionDescriptor desc,
                             Set splitVariables)

Specified by:

distributionsOver in interface Statistics

measureOver

public Measure measureOver(MeasureDescriptor desc)

Specified by:

measureOver in interface Statistics

getFactor

public Factor getFactor(Set variables)

getFactor

public Factor getFactor(List variables)

count

public double count(Observation observation)

count

public double count(Observation observation,
                    Set variables)