Labels.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  * Written (W) 1999-2008 Gunnar Raetsch
00009  * Copyright (C) 1999-2009 Fraunhofer Institute FIRST and Max-Planck-Society
00010  */
00011 
00012 #ifndef _LABELS__H__
00013 #define _LABELS__H__
00014 
00015 #include "lib/common.h"
00016 #include "lib/io.h"
00017 #include "lib/File.h"
00018 #include "base/SGObject.h"
00019 
00020 namespace shogun
00021 {
00022 
00023     class CFile;
00024 
00030 class CLabels : public CSGObject
00031 {
00032     void init(int32_t num_labels_, int32_t num_classes);
00033 
00034     public:
00036         CLabels();
00037 
00042         CLabels(int32_t num_labels);
00043 
00049         CLabels(float64_t* src, int32_t len);
00050 
00056         CLabels(float64_t* in_confidences, int32_t in_num_labels, int32_t in_num_classes);
00057 
00062         CLabels(CFile* loader);
00063         virtual ~CLabels();
00064 
00069         virtual void load(CFile* loader);
00070 
00075         virtual void save(CFile* writer);
00076 
00083         inline bool set_label(int32_t idx, float64_t label)
00084         { 
00085             if (labels && idx<num_labels)
00086             {
00087                 labels[idx]=label;
00088                 return true;
00089             }
00090             else 
00091                 return false;
00092         }
00093 
00100         inline bool set_int_label(int32_t idx, int32_t label)
00101         { 
00102             if (labels && idx<num_labels)
00103             {
00104                 labels[idx]= (float64_t) label;
00105                 return true;
00106             }
00107             else 
00108                 return false;
00109         }
00110 
00116         inline float64_t get_label(int32_t idx)
00117         {
00118             if (labels && idx<num_labels)
00119                 return labels[idx];
00120             else
00121                 return -1;
00122         }
00123 
00129         inline int32_t get_int_label(int32_t idx)
00130         {
00131             if (labels && idx<num_labels)
00132             {
00133                 ASSERT(labels[idx]== ((float64_t) ((int32_t) labels[idx])));
00134                 return ((int32_t) labels[idx]);
00135             }
00136             else
00137                 return -1;
00138         }
00139 
00144         bool is_two_class_labeling();
00145 
00152         int32_t get_num_classes();
00153 
00160         float64_t* get_labels(int32_t &len);
00161         
00167         void get_labels(float64_t** dst, int32_t* len);
00168 
00174         void set_labels(float64_t* src, int32_t len);
00175 
00178         void set_to_one();
00179 
00185         void set_confidences(float64_t* in_confidences, int32_t in_num_labels, int32_t in_num_classes);
00186 
00192         float64_t* get_confidences(int32_t& out_num_labels, int32_t& out_num_classes);
00193 
00199         void get_confidences(float64_t** dst, int32_t* out_num_labels, int32_t* out_num_classes);
00200 
00206         float64_t* get_sample_confidences(const int32_t& in_sample_index, int32_t& out_num_classes);
00207 
00214         int32_t* get_int_labels(int32_t &len);
00215 
00222         void set_int_labels(int32_t *labels, int32_t len) ;
00223 
00228         inline int32_t get_num_labels() { return num_labels; }
00229 
00231         inline virtual const char* get_name() const { return "Labels"; }
00232 
00233     protected:
00235         void find_labels();
00236 
00237     protected:
00239         int32_t num_labels;
00241         float64_t* labels;
00242 
00244         int32_t m_num_classes;
00245 
00247         float64_t* m_confidences;
00248         int32_t m_confidence_classes;
00249         int32_t m_confidence_labels;
00250 };
00251 }
00252 #endif
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