Histogram.h

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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) 1999-2009 Soeren Sonnenburg
00008  * Copyright (C) 1999-2009 Fraunhofer Institute FIRST and Max-Planck-Society
00009  */
00010 
00011 #ifndef _HISTOGRAM_H___
00012 #define _HISTOGRAM_H___
00013 
00014 #include "features/StringFeatures.h"
00015 #include "distributions/Distribution.h"
00016 
00022 class CHistogram : public CDistribution
00023 {
00024     public:
00026         CHistogram();
00027 
00032         CHistogram(CStringFeatures<uint16_t>* f);
00033         virtual ~CHistogram();
00034 
00039         virtual bool train();
00040 
00045         virtual inline int32_t get_num_model_parameters() { return (1<<16); }
00046 
00052         virtual float64_t get_log_model_parameter(int32_t num_param);
00053 
00060         virtual float64_t get_log_derivative(
00061             int32_t num_param, int32_t num_example);
00062 
00068         virtual float64_t get_log_likelihood_example(int32_t num_example);
00069 
00075         virtual bool set_histogram(float64_t* src, int32_t num);
00076 
00083         virtual void get_histogram(float64_t** dst, int32_t* num);
00084 
00086         inline virtual const char* get_name() const { return "Histogram"; }
00087 
00088     protected:
00090         float64_t* hist;
00091 };
00092 #endif

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