Package com.namsor.oss.classify.bayes

Class AbstractNaiveBayesClassifierRocksDBImpl

java.lang.Object

com.namsor.oss.classify.bayes.AbstractNaiveBayesImpl

com.namsor.oss.classify.bayes.AbstractNaiveBayesClassifierImpl

com.namsor.oss.classify.bayes.AbstractNaiveBayesClassifierRocksDBImpl

All Implemented Interfaces:

INaiveBayesClassifier

Direct Known Subclasses:

NaiveBayesClassifierRocksDBImpl, NaiveBayesClassifierRocksDBLaplacedImpl

public abstract class AbstractNaiveBayesClassifierRocksDBImpl
extends AbstractNaiveBayesClassifierImpl

A persistent Naive Bayes Classifier, based on RocksDB key-value store.

Author:

elian

Field Summary

Fields inherited from class com.namsor.oss.classify.bayes.AbstractNaiveBayesClassifierImpl

orderByProba

Constructor Summary

Constructors

Constructor	Description
AbstractNaiveBayesClassifierRocksDBImpl(String classifierName, String[] categories, String rootPathWritable)	Create a persistent Naive Bayes Classifier using RocksDB

Method Summary

Modifier and Type	Method	Description
protected byte[]	bytes(String key)
void	dbClose()	Close the classifier (if persistent)
void	dbCloseAndDestroy()	Close the classifier (if persistent) and destroy the database.
long	dbSize()	Estimate the number of key-values in DB
void	dumpDb(Writer w)	Dump the current state of the model (can be large)
protected void	finalize()
protected org.rocksdb.RocksDB	getDb()

Methods inherited from class com.namsor.oss.classify.bayes.AbstractNaiveBayesClassifierImpl

getCategories, getClassifierName, learn, likelihoodsToProbas

Methods inherited from class com.namsor.oss.classify.bayes.AbstractNaiveBayesImpl

pathCategory, pathCategoryFeatureKey, pathCategoryFeatureKeyValue, pathFeatureKey, pathFeatureKeyCountValueTypes, pathFeatureKeyValue, pathGlobal, pathGlobalCountCategories

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.namsor.oss.classify.bayes.INaiveBayesClassifier

classify, learn

Constructor Detail

AbstractNaiveBayesClassifierRocksDBImpl

public AbstractNaiveBayesClassifierRocksDBImpl(String classifierName,
                                               String[] categories,
                                               String rootPathWritable)
                                        throws PersistentClassifierException

Create a persistent Naive Bayes Classifier using RocksDB

Parameters:

classifierName - The classifier name

categories - The immutable classification categories

rootPathWritable - The writable directory for LevelDB storage

Throws:

PersistentClassifierException - The persistence error and cause

Method Detail

dbSize

public long dbSize()
            throws PersistentClassifierException

Description copied from interface: INaiveBayesClassifier

Estimate the number of key-values in DB

Returns:

The estimate number of key values

Throws:

PersistentClassifierException - The persistence error and cause

dbClose

public void dbClose()
             throws PersistentClassifierException

Description copied from interface: INaiveBayesClassifier

Close the classifier (if persistent)

Throws:

PersistentClassifierException - The persistence error and cause

dbCloseAndDestroy

public void dbCloseAndDestroy()
                       throws PersistentClassifierException

Description copied from interface: INaiveBayesClassifier

Close the classifier (if persistent) and destroy the database.

Throws:

PersistentClassifierException - The persistence error and cause

finalize

protected void finalize()
                 throws Throwable

Overrides:

finalize in class Object

Throws:

Throwable

bytes

protected byte[] bytes(String key)

getDb

protected org.rocksdb.RocksDB getDb()

Returns:

the db

dumpDb

public void dumpDb(Writer w)
            throws PersistentClassifierException

Description copied from interface: INaiveBayesClassifier

Dump the current state of the model (can be large)

Parameters:

w - A writer

Throws:

PersistentClassifierException - The persistence error and cause