00001 /********************************************************************* 00002 * 00003 * Software License Agreement (BSD License) 00004 * 00005 * Copyright (c) 2012, Scott Niekum 00006 * All rights reserved. 00007 * 00008 * Redistribution and use in source and binary forms, with or without 00009 * modification, are permitted provided that the following conditions 00010 * are met: 00011 * 00012 * * Redistributions of source code must retain the above copyright 00013 * notice, this list of conditions and the following disclaimer. 00014 * * Redistributions in binary form must reproduce the above 00015 * copyright notice, this list of conditions and the following 00016 * disclaimer in the documentation and/or other materials provided 00017 * with the distribution. 00018 * * Neither the name of the Willow Garage nor the names of its 00019 * contributors may be used to endorse or promote products derived 00020 * from this software without specific prior written permission. 00021 * 00022 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 00023 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 00024 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 00025 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 00026 * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 00027 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 00028 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 00029 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 00030 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 00031 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN 00032 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 00033 * POSSIBILITY OF SUCH DAMAGE. 00034 * 00035 *********************************************************************/ 00036 00041 #ifndef NEAREST_NEIGHBOR_CLASSIFIER_H_ 00042 #define NEAREST_NEIGHBOR_CLASSIFIER_H_ 00043 00044 #include "classifier.h" 00045 00046 namespace ml_classifiers{ 00047 00048 typedef std::vector<double> CPoint; 00049 typedef std::vector<CPoint> CPointList; 00050 typedef std::map<std::string,CPointList> ClassMap; 00051 00052 class NearestNeighborClassifier : public Classifier 00053 { 00054 public: 00055 ClassMap class_data; 00056 00057 NearestNeighborClassifier(); 00058 ~NearestNeighborClassifier(); 00059 00060 void save(const std::string filename); 00061 bool load(const std::string filename); 00062 void addTrainingPoint(std::string target_class, const std::vector<double> point); 00063 void train(); 00064 void clear(); 00065 std::string classifyPoint(const std::vector<double> point); 00066 }; 00067 00068 } /* End namespace */ 00069 #endif /* NEAREST_NEIGHBOR_CLASSIFIER_H_ */