SparseKernel.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 _SPARSEKERNEL_H___
00012 #define _SPARSEKERNEL_H___
00013 
00014 #include "kernel/Kernel.h"
00015 #include "features/SparseFeatures.h"
00016 
00022 template <class ST> class CSparseKernel : public CKernel
00023 {
00024     public:
00029         CSparseKernel(int32_t cachesize) : CKernel(cachesize) {}
00030 
00036         CSparseKernel(CFeatures* l, CFeatures* r) : CKernel(10)
00037         {
00038             init(l, r);
00039         }
00040 
00047         virtual bool init(CFeatures* l, CFeatures* r)
00048         {
00049             CKernel::init(l,r);
00050 
00051             ASSERT(l->get_feature_class()==C_SPARSE);
00052             ASSERT(r->get_feature_class()==C_SPARSE);
00053             ASSERT(l->get_feature_type()==this->get_feature_type());
00054             ASSERT(r->get_feature_type()==this->get_feature_type());
00055 
00056             if (((CSparseFeatures<ST>*) lhs)->get_num_features() != ((CSparseFeatures<ST>*) rhs)->get_num_features())
00057             {
00058                 SG_ERROR( "train or test features #dimension mismatch (l:%d vs. r:%d)\n",
00059                         ((CSparseFeatures<ST>*) lhs)->get_num_features(),((CSparseFeatures<ST>*)rhs)->get_num_features());
00060             }
00061             return true;
00062         }
00063 
00068         inline virtual EFeatureClass get_feature_class() { return C_SPARSE; }
00069 
00074         inline virtual EFeatureType get_feature_type();
00075 };
00076 
00077 template<> inline EFeatureType CSparseKernel<float64_t>::get_feature_type() { return F_DREAL; }
00078 
00079 template<> inline EFeatureType CSparseKernel<uint64_t>::get_feature_type() { return F_ULONG; }
00080 
00081 template<> inline EFeatureType CSparseKernel<int32_t>::get_feature_type() { return F_INT; }
00082 
00083 template<> inline EFeatureType CSparseKernel<uint16_t>::get_feature_type() { return F_WORD; }
00084 
00085 template<> inline EFeatureType CSparseKernel<int16_t>::get_feature_type() { return F_SHORT; }
00086 
00087 template<> inline EFeatureType CSparseKernel<uint8_t>::get_feature_type() { return F_BYTE; }
00088 
00089 template<> inline EFeatureType CSparseKernel<char>::get_feature_type() { return F_CHAR; }
00090 
00091 #endif /* _SPARSEKERNEL_H__ */

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