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// Copyright (C) 2003--2004 Ronan Collobert (collober@idiap.ch)
//
// This file is part of Torch 3.1.
//
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions
// are met:
// 1. Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// 2. Redistributions in binary form must reproduce the above copyright
// notice, this list of conditions and the following disclaimer in the
// documentation and/or other materials provided with the distribution.
// 3. The name of the author may not be used to endorse or promote products
// derived from this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
// IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
// OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
// IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
// INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
// NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
// THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#ifndef CLASS_FORMAT_DATA_SET_INC
#define CLASS_FORMAT_DATA_SET_INC
#include "DataSet.h"
namespace Torch {
/** Given a DataSet, convert (on-the-fly) targets using a conversion table.
The targets of the given DataSet should be 0,1,2... for the class 0, class 1,
class 2, and so on. Note that is must START AT 0.
After a setExample(), the inputs of this DataSet will be the same as
the provided one. The targets will be #class_labels->frames[i]#, where #i#
is contained in the targets of the provided DataSet.
@author Ronan Collobert (collober@idiap.ch)
*/
class ClassFormatDataSet : public DataSet
{
public:
/// The provided DataSet.
DataSet *data;
/// The class label translation table.
Sequence *class_labels;
/// Here you provide the translation table in #class_labels_#.
ClassFormatDataSet(DataSet *data_, Sequence *class_labels_);
/** We assume here that you want the one-hot encoding format.
The number of classes is given by #n_classes#, if positive.
Otherwise, the number of classes is guessed by taking the
maximum value of the targets of the provided DataSet.
*/
ClassFormatDataSet(DataSet *data_, int n_classes=-1);
virtual void getNumberOfFrames(int t_, int *n_input_frames_, int *n_target_frames_);
virtual void setRealExample(int t, bool set_inputs=true, bool set_targets=true);
virtual void preProcess(PreProcessing *pre_processing);
virtual void pushExample();
virtual void popExample();
//-----
virtual ~ClassFormatDataSet();
};
}
#endif
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