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/*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* Written (W) 1999-2008 Soeren Sonnenburg
* Copyright (C) 1999-2008 Fraunhofer Institute FIRST and Max-Planck-Society
*/
#ifndef _STRINGKERNEL_H___
#define _STRINGKERNEL_H___
#include "kernel/Kernel.h"
#include "features/StringFeatures.h"
/** template class StringKernel */
template <class ST> class CStringKernel : public CKernel
{
public:
/** constructor
*
* @param cachesize cache size
*/
CStringKernel(INT cachesize) : CKernel(cachesize) {}
/** constructor
*
* @param l features of left-hand side
* @param r features of right-hand side
*/
CStringKernel(CFeatures *l, CFeatures *r) : CKernel(10)
{
init(l, r);
}
/** initialize kernel
* e.g. setup lhs/rhs of kernel, precompute normalization
* constants etc.
* make sure to check that your kernel can deal with the
* supplied features (!)
*
* @param l features for left-hand side
* @param r features for right-hand side
* @return if init was successful
*/
virtual bool init(CFeatures* l, CFeatures* r)
{
CKernel::init(l,r);
ASSERT(l->get_feature_class()==C_STRING);
ASSERT(r->get_feature_class()==C_STRING);
ASSERT(l->get_feature_type()==this->get_feature_type());
ASSERT(r->get_feature_type()==this->get_feature_type());
return true;
}
/** return feature class the kernel can deal with
*
* @return feature class STRING
*/
inline virtual EFeatureClass get_feature_class() { return C_STRING; }
/** return feature type the kernel can deal with
*
* @return templated feature type
*/
virtual EFeatureType get_feature_type();
};
template<> inline EFeatureType CStringKernel<DREAL>::get_feature_type() { return F_DREAL; }
template<> inline EFeatureType CStringKernel<ULONG>::get_feature_type() { return F_ULONG; }
template<> inline EFeatureType CStringKernel<INT>::get_feature_type() { return F_INT; }
template<> inline EFeatureType CStringKernel<WORD>::get_feature_type() { return F_WORD; }
template<> inline EFeatureType CStringKernel<SHORT>::get_feature_type() { return F_SHORT; }
template<> inline EFeatureType CStringKernel<BYTE>::get_feature_type() { return F_BYTE; }
template<> inline EFeatureType CStringKernel<CHAR>::get_feature_type() { return F_CHAR; }
#endif /* _STRINGKERNEL_H__ */
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