- Layer: do gibbs sampling in calcContextBatch()

- RBM: added Gibbs sampler
- Stack adjust training column vector according to needs

git-svn-id: http://moon:8086/svn/software/trunk/projects/Rbm@797 b431acfa-c32f-4a4a-93f1-934dc6c82436

source/Rbm.hpp

@@ -176,13 +176,14 @@ public:
 		arma::mat diffErr_squared = diffErr % diffErr;
 		return arma::sum(diffErr_squared, 1) * 1.0/diffErr_squared.n_cols;
 	}
+	void gibbs_hv(arma::mat &h_states, arma::mat &v_states);
+	void gibbs_vh(arma::mat &v_probs, arma::mat &h_probs);
 	
 private:
 	Params m_params;
 	arma::mat sample(arma::mat const &src);
 	void contrastiveDivergence(arma::mat const &v_states, arma::mat &dwhv, arma::mat &dbhv, arma::mat &dbv);
 	void uniform(arma::mat &srcDst, double stdDev=1.0, double mu=0.5);
-	void gibbs(arma::mat &hv_states, arma::mat &v_states);
 	
 protected:
 	arma::mat m_bhv;