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ProbabilityDistribution.h
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1 /*
2  * This program is free software; you can redistribute it and/or modify
3  * it under the terms of the GNU General Public License as published by
4  * the Free Software Foundation; either version 3 of the License, or
5  * (at your option) any later version.
6  *
7  * Written (W) 2013 Heiko Strathmann
8  */
9 
10 #ifndef PROBABILITYDISTRIBUTION_H
11 #define PROBABILITYDISTRIBUTION_H
12 
13 #include <shogun/lib/config.h>
14 
15 #include <shogun/base/SGObject.h>
16 #include <shogun/lib/SGMatrix.h>
17 
18 namespace shogun
19 {
20 
21 template <class T> class SGVector;
22 
28 {
29 public:
32 
34  CProbabilityDistribution(int32_t dimension);
35 
37  virtual ~CProbabilityDistribution();
38 
47  virtual SGMatrix<float64_t> sample(int32_t num_samples,
48  SGMatrix<float64_t> pre_samples=SGMatrix<float64_t>()) const;
49 
55  virtual SGVector<float64_t> sample() const;
56 
63 
70  virtual float64_t log_pdf(SGVector<float64_t> sample_vec) const;
71 
73  virtual const char* get_name() const=0;
74 
75 private:
76 
78  void init();
79 
80 protected:
82  int32_t m_dimension;
83 };
84 
85 }
86 
87 #endif // PROBABILITYDISTRIBUTION_H

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