PLearn 0.1
IdentityPLearner.cc
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00001 // -*- C++ -*-
00002 
00003 // IdentityPLearner.cc
00004 //
00005 // Copyright (C) 2009 Réjean Ducharme
00006 //
00007 // Redistribution and use in source and binary forms, with or without
00008 // modification, are permitted provided that the following conditions are met:
00009 //
00010 //  1. Redistributions of source code must retain the above copyright
00011 //     notice, this list of conditions and the following disclaimer.
00012 //
00013 //  2. Redistributions in binary form must reproduce the above copyright
00014 //     notice, this list of conditions and the following disclaimer in the
00015 //     documentation and/or other materials provided with the distribution.
00016 //
00017 //  3. The name of the authors may not be used to endorse or promote
00018 //     products derived from this software without specific prior written
00019 //     permission.
00020 //
00021 // THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR
00022 // IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
00023 // OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
00024 // NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
00025 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
00026 // TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
00027 // PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
00028 // LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
00029 // NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
00030 // SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
00031 //
00032 // This file is part of the PLearn library. For more information on the PLearn
00033 // library, go to the PLearn Web site at www.plearn.org
00034 
00035 // Authors: Réjean Ducharme
00036 
00040 #include "IdentityPLearner.h"
00041 
00042 namespace PLearn {
00043 using namespace std;
00044 
00045 PLEARN_IMPLEMENT_OBJECT(
00046     IdentityPLearner,
00047     "Simple learner that outputs its inputs",
00048     "Simple learner that outputs its inputs");
00049 
00050 IdentityPLearner::IdentityPLearner()
00051 {}
00052 
00053 int IdentityPLearner::outputsize() const
00054 {
00055     return inputsize();
00056 }
00057 
00058 // Nothing to do!
00059 void IdentityPLearner::train()
00060 {}
00061 
00062 
00063 void IdentityPLearner::computeOutput(const Vec& input, Vec& output) const
00064 {
00065     // Copy input to output vector
00066     int nout = inputsize();
00067     output.resize(nout);
00068     output << input;
00069 }
00070 
00071 void IdentityPLearner::computeCostsFromOutputs(const Vec& input, const Vec& output, const Vec& target, Vec& costs) const
00072 {
00073     costs.resize(0);
00074 }
00075 
00076 TVec<string> IdentityPLearner::getTestCostNames() const
00077 {
00078     return TVec<string>();
00079 }
00080 
00081 TVec<string> IdentityPLearner::getTrainCostNames() const
00082 {
00083     return TVec<string>();
00084 }
00085 
00086 
00087 } // end of namespace PLearn
00088 
00089 
00090 /*
00091   Local Variables:
00092   mode:c++
00093   c-basic-offset:4
00094   c-file-style:"stroustrup"
00095   c-file-offsets:((innamespace . 0)(inline-open . 0))
00096   indent-tabs-mode:nil
00097   fill-column:79
00098   End:
00099 */
00100 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=79 :
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