LinearWordKernel.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 _LINEARWORDKERNEL_H___
00012 #define _LINEARWORDKERNEL_H___
00013 
00014 #include "lib/common.h"
00015 #include "kernel/SimpleKernel.h"
00016 #include "features/SimpleFeatures.h"
00017 
00027 class CLinearWordKernel: public CSimpleKernel<uint16_t>
00028 {
00029     public:
00032         CLinearWordKernel();
00033 
00039         CLinearWordKernel(CSimpleFeatures<uint16_t>* l, CSimpleFeatures<uint16_t>* r);
00040 
00041         virtual ~CLinearWordKernel();
00042 
00049         virtual bool init(CFeatures* l, CFeatures* r);
00050 
00052         virtual void cleanup();
00053 
00059         virtual bool load_init(FILE* src);
00060 
00066         virtual bool save_init(FILE* dest);
00067 
00072         virtual EKernelType get_kernel_type() { return K_LINEAR; }
00073 
00078         virtual const char* get_name() const { return "Linear"; }
00079 
00087         virtual bool init_optimization(
00088             int32_t num_suppvec, int32_t* sv_idx, float64_t* alphas);
00089 
00094         virtual bool delete_optimization();
00095 
00101         virtual float64_t compute_optimized(int32_t idx);
00102 
00104         virtual void clear_normal();
00105 
00111         virtual void add_to_normal(int32_t idx, float64_t weight);
00112 
00113     protected:
00122         virtual float64_t compute(int32_t idx_a, int32_t idx_b);
00123 
00124     protected:
00126         float64_t* normal;
00127 };
00128 
00129 #endif /* _LINEARWORDKERNEL_H__ */

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