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/**
* @file gensvm_task.c
* @author G.J.J. van den Burg
* @date 2016-05-01
* @brief Functions for initializing and freeing a GenTask
*
* @copyright
Copyright 2016, G.J.J. van den Burg.
This file is part of GenSVM.
GenSVM 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.
GenSVM is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with GenSVM. If not, see <http://www.gnu.org/licenses/>.
*/
#include "gensvm_task.h"
/**
* @brief Initialize a GenTask structure
*
* @details
* A GenTask structure is initialized and the default value for the
* parameters are set. A pointer to the initialized GenTask is returned.
*
* @returns initialized GenTask
*/
struct GenTask *gensvm_init_task()
{
struct GenTask *t = Malloc(struct GenTask, 1);
t->kerneltype = K_LINEAR;
t->weight_idx = 1;
t->folds = 10;
t->ID = -1;
t->p = 1.0;
t->kappa = 0.0;
t->lambda = 1.0;
t->epsilon = 1e-6;
t->gamma = 1.0;
t->coef = 0.0;
t->degree = 2.0;
t->train_data = NULL;
t->test_data = NULL;
t->performance = 0.0;
t->max_iter = 1000000000;
return t;
}
/**
* @brief Free the GenTask struct
*
* @details
* Freeing the allocated memory of the GenTask means freeing _only_ the task
* itself. The datasets are not freed, as these are shared between all tasks.
*
* @param[in] t GenTask to be freed
*
*/
void gensvm_free_task(struct GenTask *t)
{
free(t);
t = NULL;
}
/**
* @brief Deepcopy a GenTask struct
*
* @details
* Create a deep copy of a GenTask struct. Note that the datasets belonging to
* the tasks are not copied, only the pointers to the datasets.
*
* @param[in] t input GenTask struct to copy
*
* @return a deepcopy of the input GenTask
*/
struct GenTask *gensvm_copy_task(struct GenTask *t)
{
struct GenTask *nt = gensvm_init_task();
nt->weight_idx = t->weight_idx;
nt->folds = t->folds;
nt->ID = t->ID;
nt->p = t->p;
nt->kappa = t->kappa;
nt->lambda = t->lambda;
nt->epsilon = t->epsilon;
nt->train_data = t->train_data;
nt->test_data = t->test_data;
nt->performance = t->performance;
nt->kerneltype = t->kerneltype;
nt->gamma = t->gamma;
nt->coef = t->coef;
nt->degree = t->degree;
nt->max_iter = t->max_iter;
return nt;
}
/**
* @brief Copy parameters from GenTask to GenModel
*
* @details
* A GenTask struct only contains the parameters of the GenModel to be estimated.
* This function is used to copy these parameters.
*
* @param[in] task GenTask instance with parameters
* @param[in,out] model GenModel to which the parameters are copied
*/
void gensvm_task_to_model(struct GenTask *task, struct GenModel *model)
{
// copy basic model parameters
model->weight_idx = task->weight_idx;
model->epsilon = task->epsilon;
model->p = task->p;
model->kappa = task->kappa;
model->lambda = task->lambda;
// copy kernel parameters
model->kerneltype = task->kerneltype;
model->gamma = task->gamma;
model->coef = task->coef;
model->degree = task->degree;
// copy other parameters
model->max_iter = task->max_iter;
}
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