org.knowceans.topics.cgen
Class Hpam2pGibbsSampler

java.lang.Object
  org.knowceans.topics.cgen.Hpam2pGibbsSampler

public class Hpam2pGibbsSampler
extends java.lang.Object

Generated Gibbs sampler for the HPAM2 model. Hierarchical PAM model (HPAM2), testing C1B and C2 structures as well as custom selectors with switch. Model with fully dependent samplers.

Implementation using parallelised samplers.

Mixture network specification:

 m >> (theta[m] | alpha) >> x[m][n]
 m, x[m][n] >> (thetax[m,x] | alphax[x]) >> y[m][n]
 x[m][n], y[m][n] >> (phi[k] | beta) >> w[m][n]
 
 k: { 
 // TODO: x==0 --> y = IDLE ?
 if (x==0) { k = 0; }
 else if (y==0) k = 1 + x;
 else k = 1 + X + y; 
 }. 
 
 elements:
 
    document m
    type: {ROOT|E3COUPLED}
    parents: (root)
    children: theta thetax
    range: M
 ----
    top-subtop (thetax[m,x] | alphax[x])
    type: {SEQUENCE|C1BSEQADD}
    parents: m x
    children: y
    components: thetax, domain: M *  X, range: Y
    counts: nmxy, sum: nmxysum
    index: mx, selector: m,x
    hyperparams: alphax, dimension: X * Y, selector: x, fixed: false 
 ----
    subtopic y[m][n]
    type: {HIDDEN|E1SINGLE}
    parents: thetax
    children: phi
    range: Y
 ----
    hiertop-word (phi[k] | beta)
    type: {TOPIC|C2MULTI}
    parents: x y
    children: w
    components: phi, domain: 1 + X + Y, range: V
    counts: nkw, sum: nkwsum
    index: k, selector: 
 // TODO: x==0 --> y = IDLE ?
 if (x==0) { k = 0; }
 else if (y==0) k = 1 + x;
 else k = 1 + X + y;
    hyperparams: beta, dimension 1, fixed: false 
 ----
    word w[m][n]
    type: {VISIBLE|E1SINGLE}
    parents: phi
    children: (leaf)
    range: V
 ----
    doc-suptop (theta[m] | alpha)
    type: {SEQUENCE|C1ROOT}
    parents: m
    children: x
    components: theta, domain: M, range: X
    counts: nmx, sum: null
    index: m, selector: null
    hyperparams: alpha, dimension X, fixed: false 
 ----
    suptopic x[m][n]
    type: {HIDDEN|E3COUPLED}
    parents: theta
    children: thetax phi
    range: X
 ----
 sequences:
 
 words [m][n]
 parent: (root), children: []
 edges: m x y w
 

Author:

gregor heinrich (via MixNetKernelGenerator)

Field Summary

(package private) double[]	alpha
(package private) double	alphasum
(package private) double[][]	alphax
(package private) double[]	alphaxsum
(package private) double	beta
(package private) double	betasum
(package private) static int	IDLE
(package private) int	iter
(package private) int	M
(package private) int	Mq
(package private) int	niter
(package private) int[][]	nkw
(package private) int[]	nkwsum
(package private) int[][]	nmx
(package private) int[][]	nmxq
(package private) int[][]	nmxy
(package private) int[][]	nmxyq
(package private) int[]	nmxysum
(package private) int[]	nmxysumq
(package private) int	P
(package private) double[][]	phi
(package private) double[][][]	pp
(package private) java.util.Random[]	rand
(package private) int	V
(package private) int[][]	w
(package private) int	W
(package private) int[][]	wq
(package private) int	Wq
(package private) int[][]	x
(package private) int	X
(package private) int[][]	xq
(package private) int[][]	y
(package private) int	Y
(package private) int[][]	yq

Constructor Summary

Hpam2pGibbsSampler(double alphax, int Y, double beta, int[][] w, int[][] wq, int V, double alpha, int X, java.util.Random rand)

Method Summary

void	estAlpha()
void	init()
void	initq()
static void	main(java.lang.String[] args)
double	ppx()
void	run(int niter)
void	runq(int niterq)
java.lang.String	toString()

Methods inherited from class java.lang.Object

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

Field Detail

rand

java.util.Random[] rand

iter

int iter

niter

int niter

M

int M

Mq

int Mq

nmxy

int[][] nmxy

nmxyq

int[][] nmxyq

nmxysum

int[] nmxysum

nmxysumq

int[] nmxysumq

alphax

double[][] alphax

alphaxsum

double[] alphaxsum

y

int[][] y

yq

int[][] yq

Y

int Y

nkw

int[][] nkw

nkwsum

int[] nkwsum

beta

double beta

betasum

double betasum

phi

double[][] phi

w

int[][] w

wq

int[][] wq

V

int V

nmx

int[][] nmx

nmxq

int[][] nmxq

alpha

double[] alpha

alphasum

double alphasum

x

int[][] x

xq

int[][] xq

X

int X

W

int W

Wq

int Wq

pp

double[][][] pp

P

int P

IDLE

static final int IDLE

See Also:

Constant Field Values

Constructor Detail

Hpam2pGibbsSampler

public Hpam2pGibbsSampler(double alphax,
                          int Y,
                          double beta,
                          int[][] w,
                          int[][] wq,
                          int V,
                          double alpha,
                          int X,
                          java.util.Random rand)

Method Detail

main

public static void main(java.lang.String[] args)

init

public void init()

initq

public void initq()

run

public void run(int niter)

runq

public void runq(int niterq)

estAlpha

public void estAlpha()

ppx

public double ppx()

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object