AUCKernel.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) 1999-2008 Gunnar Raetsch
00008  * Written (W) 2009 Soeren Sonnnenburg
00009  * Copyright (C) 1999-2009 Fraunhofer Institute FIRST and Max-Planck-Society
00010  */
00011 
00012 #ifndef _AUCKERNEL_H___
00013 #define _AUCKERNEL_H___
00014 
00015 #include <shogun/lib/common.h>
00016 #include <shogun/kernel/DotKernel.h>
00017 #include <shogun/features/DenseFeatures.h>
00018 #include <shogun/labels/Labels.h>
00019 
00020 namespace shogun
00021 {
00022     class CLabels;
00023     template <class T> class CDenseFeatures;
00024 
00033 class CAUCKernel: public CDotKernel
00034 {
00035     void init();
00036 
00037     public:
00039         CAUCKernel();
00040 
00046         CAUCKernel(int32_t size, CKernel* subkernel);
00047 
00049         virtual ~CAUCKernel();
00050 
00057         CLabels* setup_auc_maximization(CLabels* labels);
00058 
00065         virtual bool init(CFeatures* l, CFeatures* r);
00066 
00071         virtual EKernelType get_kernel_type() { return K_AUC; }
00072 
00077         virtual const char* get_name() const { return "AUCKernel" ; }
00078 
00083         virtual EFeatureClass get_feature_class() { return C_DENSE; }
00084 
00089         virtual EFeatureType get_feature_type() { return F_WORD; }
00090 
00091     protected:
00100         virtual float64_t compute(int32_t idx_a, int32_t idx_b);
00101 
00102     protected:
00104         CKernel* subkernel;
00105 };
00106 }
00107 #endif /* _AUCKERNEL_H__ */
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