is2.data

Class MFB

java.lang.Object

is2.data.MFB

All Implemented Interfaces:

IEncoder, IEncoderPlus

public final class MFB
extends Object
implements IEncoderPlus

Map Features, do not map long to integer

Author:

Bernd Bohnet, 20.09.2009

Field Summary

Fields

Modifier and Type	Field and Description
static int	good
static int	misses Maps a long to a integer value.
static String	NONE
boolean	stop Stop growing

Constructor Summary

Constructors

Constructor and Description
MFB()

Method Summary

Methods

Modifier and Type	Method and Description
void	calculateBits() Calculates the number of bits needed to encode a feature
static void	clearData() Clear the data
static short	getFeatureBits(String a)
HashMap<String,Integer>	getFeatureCounter()
static HashMap<String,HashMap<String,Integer>>	getFeatureSet()
int	getValue(String t, String v) Get the integer place holder of the string value v of the type a
static int	getValueS(String a, String v) Static version of getValue
int	hasValue(String a, String v)
static String	printBits(int k)
void	read(DataInputStream din)
int	register(String a, String v) Register an attribute class, if it not exists and add a possible value
static String[]	reverse(HashMap<String,Integer> v)
int	size()
String	toString()
static void	writeData(DataOutputStream dos) Write the data

Methods inherited from class java.lang.Object

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

Field Detail

stop

public boolean stop

Stop growing

NONE

public static final String NONE

See Also:

Constant Field Values

misses

public static int misses

Maps a long to a integer value. This is very useful to save memory for sparse data long values

good

public static int good

Constructor Detail

MFB

public MFB()

Method Detail

size

public int size()

register

public final int register(String a,
           String v)

Register an attribute class, if it not exists and add a possible value

Specified by:

register in interface IEncoderPlus

Parameters:

type -

type2 -

calculateBits

public void calculateBits()

Calculates the number of bits needed to encode a feature

toString

public String toString()

Overrides:

toString in class Object

getFeatureBits

public static final short getFeatureBits(String a)

getValue

public final int getValue(String t,
           String v)

Get the integer place holder of the string value v of the type a

Specified by:

getValue in interface IEncoder

Parameters:

t - the type

v - the value

Returns:

the integer place holder of v

getValueS

public static final int getValueS(String a,
            String v)

Static version of getValue

See Also:

getValue

hasValue

public int hasValue(String a,
           String v)

printBits

public static String printBits(int k)

writeData

public static void writeData(DataOutputStream dos)
                      throws IOException

Write the data

Parameters:

dos -

Throws:

IOException

read

public void read(DataInputStream din)
          throws IOException

Throws:

IOException

clearData

public static void clearData()

Clear the data

getFeatureCounter

public HashMap<String,Integer> getFeatureCounter()

Specified by:

getFeatureCounter in interface IEncoderPlus

Returns:

getFeatureSet

public static HashMap<String,HashMap<String,Integer>> getFeatureSet()

reverse

public static String[] reverse(HashMap<String,Integer> v)