org.knowceans.dirichlet.atm
Class AtmMarkovState

java.lang.Object
  org.knowceans.dirichlet.lda.LdaMarkovState
      org.knowceans.dirichlet.atm.AtmMarkovState

All Implemented Interfaces:

java.io.Serializable

public class AtmMarkovState
extends LdaMarkovState

AtmMarkovState represents the state of the gibbs sampler of the lda process used for estimating unknown documents (word vectors).

Author:

gregor

See Also:

Serialized Form

Field Summary

int	A total number of authors
int[][]	ad document authors [M][]
private static long	serialVersionUID
int[][]	x word authors

Fields inherited from class org.knowceans.dirichlet.lda.LdaMarkovState

nd, ndsum, nw, nwsum, V, w, z

Constructor Summary

AtmMarkovState()
Initialise markov state for loading or setting by parameters (subclasses only).

AtmMarkovState(AtmMarkovState state)
Copy constructor that copies all internal fields from state to this.

AtmMarkovState(int[][] w, int V, int[][] ad, int A, int[][] z, int K, int[][] x)
Initialise the object from the data given.

AtmMarkovState(java.lang.String atmBase)
Set up the markov chain from a file.

Method Summary

void	copyTo(AtmMarkovState cps) Copy the information contained in this to the fields of the argument object.
protected void	initNd(int M, int K, java.util.Random rand)
void	load(java.lang.String filename) Load state arrays from file.
void	recalculate(int[][] z, int[][] x) Recalculates the topic statistics from the word-topic associations.
void	save(java.lang.String filename) Save (optionally compressed) file.

Methods inherited from class org.knowceans.dirichlet.lda.LdaMarkovState

copyTo, init, initNw, recalculate

Methods inherited from class java.lang.Object

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

Field Detail

serialVersionUID

private static final long serialVersionUID

See Also:

Constant Field Values

ad

public int[][] ad

document authors [M][]

x

public int[][] x

word authors

A

public int A

total number of authors

Constructor Detail

AtmMarkovState

public AtmMarkovState()

Initialise markov state for loading or setting by parameters (subclasses only).

AtmMarkovState

public AtmMarkovState(java.lang.String atmBase)

Set up the markov chain from a file.

Parameters:

atmBase -

AtmMarkovState

public AtmMarkovState(AtmMarkovState state)

Copy constructor that copies all internal fields from state to this.

Parameters:

state -

AtmMarkovState

public AtmMarkovState(int[][] w,
                      int V,
                      int[][] ad,
                      int A,
                      int[][] z,
                      int K,
                      int[][] x)

Initialise the object from the data given.

Parameters:

w - document vectors

V - vocabulary size

ad - document authors

A - author community size

z - document word topics

K - topic count

x - document word authors

Method Detail

recalculate

public void recalculate(int[][] z,
                        int[][] x)

Recalculates the topic statistics from the word-topic associations.

Parameters:

z -

x -

copyTo

public void copyTo(AtmMarkovState cps)

Copy the information contained in this to the fields of the argument object.

Parameters:

cps -

load

public void load(java.lang.String filename)

Load state arrays from file.

Overrides:

load in class LdaMarkovState

Parameters:

file -

save

public void save(java.lang.String filename)

Save (optionally compressed) file.

Overrides:

save in class LdaMarkovState

Parameters:

file -

initNd

protected void initNd(int M,
                      int K,
                      java.util.Random rand)

Overrides:

initNd in class LdaMarkovState