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Class ArgSpecQuery

java.lang.Object
  blog.AbstractQuery
      blog.ArgSpecQuery

All Implemented Interfaces:

Query

Direct Known Subclasses:

FormulaQuery

public class ArgSpecQuery
extends AbstractQuery

Field Summary

protected ArgSpec	argSpec
protected Histogram	histogram
protected java.io.PrintStream	outputFile
protected java.util.Map	outputFiles
protected int	trialNum
protected BayesNetVar	variable

Constructor Summary

ArgSpecQuery(ArgSpec argSpec)

Method Summary

ArgSpec	argSpec()
boolean	checkTypesAndScope(Model model) Returns true if this query satisfies type and scope constraints.
int	compile() Compiles the underlying ArgSpec, and initializes the variable corresponding to this query.
Histogram	getHistogram()
java.lang.Object	getLocation() Returns an object whose toString method yields a description of the location where this query occurred in an input file.
java.util.Collection<? extends BayesNetVar>	getVariables() Returns a collection of (basic or derived) random variables such that the result of this query depends only on the posterior joint distribution for these variables.
void	logResults(int numSamples) If a log file has been specified, prints the results so far to that file.
void	printResults(java.io.PrintStream s) Prints the results of this query to the given stream.
void	printVarianceResults(java.io.PrintStream s) Prints across-run statistics.
void	setPosterior(ve.Factor posterior) Throws an UnsupportedOperationException.
java.lang.String	toString()
void	updateStats(PartialWorld world, double weight) Updates the within-run statistics for this query to reflect the given world sampled with the given weight.
void	zeroOut() Ends the current run, records across-run statistics for it, and clears the within-run statistics.

Methods inherited from class java.lang.Object

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

Field Detail

argSpec

protected ArgSpec argSpec

variable

protected BayesNetVar variable

histogram

protected Histogram histogram

trialNum

protected int trialNum

outputFiles

protected java.util.Map outputFiles

outputFile

protected java.io.PrintStream outputFile

Constructor Detail

ArgSpecQuery

public ArgSpecQuery(ArgSpec argSpec)

Method Detail

argSpec

public ArgSpec argSpec()

printResults

public void printResults(java.io.PrintStream s)

Description copied from interface: Query

Prints the results of this query to the given stream.

logResults

public void logResults(int numSamples)

Description copied from class: AbstractQuery

If a log file has been specified, prints the results so far to that file.

This default implementation does nothing.

Specified by:

logResults in interface Query

Overrides:

logResults in class AbstractQuery

Parameters:

numSamples - the number of samples taken by the inference engine so far (can be set to zero for non-sampling inference engines)

getVariables

public java.util.Collection<? extends BayesNetVar> getVariables()

Description copied from interface: Query

Returns a collection of (basic or derived) random variables such that the result of this query depends only on the posterior joint distribution for these variables.

checkTypesAndScope

public boolean checkTypesAndScope(Model model)

Description copied from interface: Query

Returns true if this query satisfies type and scope constraints. If there is a type or scope error, prints a message to standard error and returns false.

compile

public int compile()

Compiles the underlying ArgSpec, and initializes the variable corresponding to this query.

updateStats

public void updateStats(PartialWorld world,
                        double weight)

Description copied from interface: Query

Updates the within-run statistics for this query to reflect the given world sampled with the given weight. The world must be complete enough to define values for all the variables returned by getVariables.

The effects of calling both updateStats and setPosterior in the same run are not defined.

setPosterior

public void setPosterior(ve.Factor posterior)

Description copied from class: AbstractQuery

Throws an UnsupportedOperationException.

Specified by:

setPosterior in interface Query

Overrides:

setPosterior in class AbstractQuery

Parameters:

posterior - factor whose set of variables is the same as the collection returned by getVariables, and whose entries sum to 1

zeroOut

public void zeroOut()

Description copied from interface: Query

Ends the current run, records across-run statistics for it, and clears the within-run statistics.

printVarianceResults

public void printVarianceResults(java.io.PrintStream s)

Description copied from interface: Query

Prints across-run statistics.

getHistogram

public Histogram getHistogram()

getLocation

public java.lang.Object getLocation()

Description copied from class: AbstractQuery

Returns an object whose toString method yields a description of the location where this query occurred in an input file.

This default implementation returns a string indicating that this query was generated internally, rather than from an input file.

Specified by:

getLocation in interface Query

Overrides:

getLocation in class AbstractQuery

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object