FKFeatures.h

Go to the documentation of this file.
00001 /*
00002  * This program is free software; you can redistribute it and/or modify
00003  * it under the terms of the GNU General Public License as published by
00004  * the Free Software Foundation; either version 3 of the License, or
00005  * (at your option) any later version.
00006  *
00007  * Written (W) 1999-2008 Soeren Sonnenburg
00008  * Written (W) 1999-2008 Gunnar Raetsch
00009  * Copyright (C) 1999-2008 Fraunhofer Institute FIRST and Max-Planck-Society
00010  */
00011 
00012 #ifndef _CFKFEATURES__H__
00013 #define _CFKFEATURES__H__
00014 
00015 #include "features/RealFeatures.h"
00016 #include "distributions/hmm/HMM.h"
00017 
00033 class CFKFeatures: public CRealFeatures
00034 {
00035     public:
00042         CFKFeatures(int32_t size, CHMM* p, CHMM* n);
00043 
00045         CFKFeatures(const CFKFeatures &orig);
00046 
00047         virtual ~CFKFeatures();
00048 
00054         void set_models(CHMM* p, CHMM* n);
00055 
00060         inline void set_a(float64_t a)
00061         {
00062             weight_a=a;
00063         }
00064 
00069         inline float64_t get_a()
00070         {
00071             return weight_a;
00072         }
00073 
00078         virtual float64_t* set_feature_matrix();
00079 
00085         float64_t set_opt_a(float64_t a=-1);
00086 
00091         inline float64_t get_weight_a() { return weight_a; };
00092 
00093     protected:
00101         virtual float64_t* compute_feature_vector(
00102             int32_t num, int32_t& len, float64_t* target=NULL);
00103 
00110         void compute_feature_vector(float64_t* addr, int32_t num, int32_t& len);
00111 
00117         float64_t deriv_a(float64_t a, int32_t dimension=-1) ;
00118 
00119     protected:
00121         CHMM* pos;
00123         CHMM* neg;
00125         float64_t* pos_prob;
00127         float64_t* neg_prob;
00129         float64_t weight_a;
00130 };
00131 #endif

SHOGUN Machine Learning Toolbox - Documentation