- added char2vec and vec2char

- refactored

git-svn-id: http://moon:8086/svn/software/trunk/projects/Rbm@859 b431acfa-c32f-4a4a-93f1-934dc6c82436

source/matutils.hpp

@@ -14,6 +14,8 @@
 #ifndef MATUTILS_HPP
 #define MATUTILS_HPP
 
+#include "RnnTextHelper.hpp"
+
 #include <math.h>
 
 namespace Matutils
@@ -66,6 +68,22 @@ namespace Matutils
 		return x/stddev;
 	}
 
+	inline arma::mat char2vec(char c, size_t len)
+	{
+		arma::mat result = arma::zeros(1, len);
+		int idx = RnnTextHelper::ch2idx(c);
+		result[idx] = 1;
+		
+		return result;
+	}
+	
+	inline char vec2char(arma::mat const &vec)
+	{
+		char result = RnnTextHelper::idx2ch(vec.index_max());
+		
+		return result;
+	}
+
 }
 
 #endif /* MATUTILS_HPP */