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GaussianBlobsDataGenerator.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) 2013 Heiko Strathmann
00008  */
00009 
00010 #ifndef __GAUSSIANBLOBSDATAGENERATOR_H_
00011 #define __GAUSSIANBLOBSDATAGENERATOR_H_
00012 
00013 #include <shogun/features/streaming/StreamingDenseFeatures.h>
00014 
00015 namespace shogun
00016 {
00017 
00030 class CGaussianBlobsDataGenerator: public CStreamingDenseFeatures<float64_t>
00031 {
00032 public:
00034     CGaussianBlobsDataGenerator();
00035 
00038     CGaussianBlobsDataGenerator(index_t sqrt_num_blobs, float64_t distance,
00039             float64_t stretch, float64_t angle);
00040 
00042     virtual ~CGaussianBlobsDataGenerator();
00043 
00045     virtual const char* get_name() const
00046     {
00047         return "GaussianBlobsDataGenerator";
00048     }
00049 
00058     void set_blobs_model(index_t sqrt_num_blobs, float64_t distance,
00059             float64_t stretch, float64_t angle);
00060 
00062     bool get_next_example();
00063 
00065     void release_example();
00066 
00067 private:
00069     void init();
00070 
00071 protected:
00073     index_t m_sqrt_num_blobs;
00074 
00076     float64_t m_distance;
00077 
00079     float64_t m_stretch;
00080 
00082     float64_t m_angle;
00083 
00086     SGMatrix<float64_t> m_cholesky;
00087 };
00088 
00089 }
00090 
00091 #endif /* __GAUSSIANBLOBSDATAGENERATOR_H_ */
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