org.linqs.psl.application.learning.weight.search.grid

Class InitialWeightRankSearch

java.lang.Object

org.linqs.psl.application.learning.weight.WeightLearningApplication

org.linqs.psl.application.learning.weight.search.grid.BaseGridSearch

org.linqs.psl.application.learning.weight.search.grid.RankSearch

org.linqs.psl.application.learning.weight.search.grid.InitialWeightRankSearch

All Implemented Interfaces:

ModelApplication

public class InitialWeightRankSearch
extends RankSearch

RankSearch over the initial weights and then run weight learning like normal. TODO(eriq): It would be great if we could construct the internal WLA on our side instead of relying on it to be passed in (we have to ensure that the caller uses the same rules and DBs).

Field Summary

Fields inherited from class org.linqs.psl.application.learning.weight.search.grid.RankSearch

CONFIG_PREFIX, DELIM, SCALING_FACTORS_DEFAULT, SCALING_FACTORS_KEY

Fields inherited from class org.linqs.psl.application.learning.weight.search.grid.BaseGridSearch

currentLocation, maxNumLocations, numLocations, objectives

Fields inherited from class org.linqs.psl.application.learning.weight.WeightLearningApplication

allRules, atomManager, evaluator, EVALUATOR_DEFAULT, EVALUATOR_KEY, expectedIncompatibility, GROUND_RULE_STORE_DEFAULT, GROUND_RULE_STORE_KEY, groundRuleStore, inLatentMPEState, inMPEState, latentGroundRuleStore, latentTermStore, MAX_RANDOM_WEIGHT, MIN_ADMM_STEPS, mutableRules, observedDB, observedIncompatibility, RANDOM_WEIGHTS_DEFAULT, RANDOM_WEIGHTS_KEY, reasoner, REASONER_DEFAULT, REASONER_KEY, rvDB, supportsLatentVariables, TERM_GENERATOR_DEFAULT, TERM_GENERATOR_KEY, TERM_STORE_DEFAULT, TERM_STORE_KEY, termGenerator, termStore, trainingMap

Constructor Summary

Constructors

Constructor and Description
InitialWeightRankSearch(List<Rule> rules, Database rvDB, Database observedDB)
InitialWeightRankSearch(List<Rule> rules, WeightLearningApplication internalWLA, Database rvDB, Database observedDB) The WeightLearningApplication should not have had initGroundModel() called yet.
InitialWeightRankSearch(Model model, WeightLearningApplication internalWLA, Database rvDB, Database observedDB)

Method Summary

Modifier and Type	Method and Description
void	close() Releases all resources used by this ModelApplication.
protected double	inspectLocation(double[] weights) Inspect the location defined by the given weights and give back its score (lower is better).
protected void	postInitGroundModel() A convenient place for children to do additional ground model initialization.

Methods inherited from class org.linqs.psl.application.learning.weight.search.grid.RankSearch

chooseNextLocation, getWeights

Methods inherited from class org.linqs.psl.application.learning.weight.search.grid.BaseGridSearch

doLearn

Methods inherited from class org.linqs.psl.application.learning.weight.WeightLearningApplication

computeExpectedIncompatibility, computeLatentMPEState, computeLoss, computeMPEState, computeObservedIncompatibility, createAtomManager, getWLA, initGroundModel, initGroundModel, initGroundModel, initLatentGroundModel, learn, setBudget, setDefaultRandomVariables, setLabeledRandomVariables

Methods inherited from class java.lang.Object

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

Constructor Detail

InitialWeightRankSearch

public InitialWeightRankSearch(Model model,
                               WeightLearningApplication internalWLA,
                               Database rvDB,
                               Database observedDB)

InitialWeightRankSearch

public InitialWeightRankSearch(List<Rule> rules,
                               Database rvDB,
                               Database observedDB)

InitialWeightRankSearch

public InitialWeightRankSearch(List<Rule> rules,
                               WeightLearningApplication internalWLA,
                               Database rvDB,
                               Database observedDB)

The WeightLearningApplication should not have had initGroundModel() called yet.

Method Detail

postInitGroundModel

protected void postInitGroundModel()

Description copied from class: WeightLearningApplication

A convenient place for children to do additional ground model initialization.

Overrides:

postInitGroundModel in class WeightLearningApplication

inspectLocation

protected double inspectLocation(double[] weights)

Description copied from class: BaseGridSearch

Inspect the location defined by the given weights and give back its score (lower is better). This method may modify weights if it wants to store a different set of weights than those initially passed in. The rules have already been set with the given weights, they are only passed in so the method has a chance to modify them before the result is stored. This is a prime method for child classes to override. Implementers should make sure to correct (negate) the value that comes back from the Evaluator if lower is better for that evaluator.

Overrides:

inspectLocation in class BaseGridSearch

close

public void close()

Description copied from interface: ModelApplication

Releases all resources used by this ModelApplication.

Specified by:

close in interface ModelApplication

Overrides:

close in class WeightLearningApplication