PLearn 0.1
PruningLinearRegressor.h
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00001 // -*- C++ -*-
00002 
00003 // PruningLinearRegressor.h
00004 //
00005 // Copyright (C) 2008 Rejean 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: Rejean Ducharme
00036 
00040 #ifndef PruningLinearRegressor_INC
00041 #define PruningLinearRegressor_INC
00042 
00043 #include <plearn_learners/regressors/LinearRegressor.h>
00044 
00045 namespace PLearn {
00046 
00057 class PruningLinearRegressor : public LinearRegressor
00058 {
00059     typedef LinearRegressor inherited;
00060 
00061 public:
00062     //#####  Public Build Options  ############################################
00063 
00065     string pruning_method;
00066     real min_t_ratio;
00067     int max_number;
00068     real max_fraction;
00069 
00070 public:
00071     //#####  Public Member Functions  #########################################
00072 
00074     // ### Make sure the implementation in the .cc
00075     // ### initializes all fields to reasonable default values.
00076     PruningLinearRegressor();
00077 
00078 
00079     //#####  PLearner Member Functions  #######################################
00080 
00084     virtual void train();
00085 
00087     virtual void computeOutput(const Vec& input, Vec& output) const;
00088 
00089     //#####  PLearn::Object Protocol  #########################################
00090 
00091     // Declares other standard object methods.
00092     PLEARN_DECLARE_OBJECT(PruningLinearRegressor);
00093 
00094     // Simply calls inherited::build() then build_()
00095     virtual void build();
00096 
00098     virtual void makeDeepCopyFromShallowCopy(CopiesMap& copies);
00099 
00100     virtual void setTrainingSet(VMat training_set, bool call_forget=true);
00101 
00102 protected:
00103     //#####  Protected Options  ###############################################
00104 
00105     // ### Declare protected option fields (such as learned parameters) here
00106 
00110     Vec t_ratio;
00111 
00113     TVec<int> input_indices;
00114 
00115 protected:
00116     //#####  Protected Member Functions  ######################################
00117 
00119     static void declareOptions(OptionList& ol);
00120 
00123     void computeTRatio();
00124 
00126     void newDatasetIndices();
00127 
00128 private:
00129     //#####  Private Member Functions  ########################################
00130 
00132     void build_();
00133 };
00134 
00135 // Declares a few other classes and functions related to this class
00136 DECLARE_OBJECT_PTR(PruningLinearRegressor);
00137 
00138 } // end of namespace PLearn
00139 
00140 #endif
00141 
00142 
00143 /*
00144   Local Variables:
00145   mode:c++
00146   c-basic-offset:4
00147   c-file-style:"stroustrup"
00148   c-file-offsets:((innamespace . 0)(inline-open . 0))
00149   indent-tabs-mode:nil
00150   fill-column:79
00151   End:
00152 */
00153 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=79 :
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