资源简介
在matlab中用RF的方法对IRIS数据进行分类,取一百个数据用于训练,五十个数据用于测试,并统计错误率,代码经本人运行,可用于学习随机森林
代码片段和文件信息
%**************************************************************
%* mex interface to Andy Liaw et al.‘s C code (used in R package randomForest)
%* Added by Abhishek Jaiantilal ( abhishek.jaiantilal@colorado.edu )
%* License: GPLv2
%* Version: 0.02
%
% Calls Classification Random Forest
% A wrapper matlab file that calls the mex file
% This does prediction given the data and the model file
% Options depicted in predict function in http://cran.r-project.org/web/packages/randomForest/randomForest.pdf
%**************************************************************
%function [Y_hat votes] = classRF_predict(Xmodel extra_options)
% requires 2 arguments
% X: data matrix
% model: generated via classRF_train function
% extra_options.predict_all = predict_all if set will send all the prediction.
%
%
% Returns
% Y_hat - prediction for the data
% votes - unnormalized weights for the model
% prediction_per_tree - per tree prediction. the returned object .
% If predict.all=TRUE then the individual component of the returned object is a character
% matrix where each column contains the predicted class by a tree in the forest.
%
%
% Not yet implemented
% proximity
function [Y_new votes prediction_per_tree] = classRF_predict(Xmodel extra_options)
if nargin<2
error(‘need atleast 2 parametersX matrix and model‘);
end
if exist(‘extra_options‘‘var‘)
if isfield(extra_options‘predict_all‘)
predict_all = extra_options.predict_all;
end
end
if ~exist(‘predict_all‘‘var‘); predict_all=0;end
[Y_hatprediction_per_treevotes] = mexClassRF_predict(X‘model.nrnodesmodel.ntreemodel.xbestsplitmodel.classwtmodel.cutoffmodel.treemapmodel.nodestatusmodel.nodeclassmodel.bestvarmodel.ndbigtreemodel.nclass predict_all);
%keyboard
votes = votes‘;
clear mexClassRF_predict
Y_new = double(Y_hat);
new_labels = model.new_labels;
orig_labels = model.orig_labels;
for i=1:length(orig_labels)
Y_new(find(Y_hat==new_labels(i)))=Inf;
Y_new(isinf(Y_new))=orig_labels(i);
end
1;
属性 大小 日期 时间 名称
----------- --------- ---------- ----- ----
文件 2166 2009-05-17 03:11 IRIS—RFclassification\RF_Class_C\classRF_predict.m
文件 14829 2009-05-17 03:11 IRIS—RFclassification\RF_Class_C\classRF_train.m
文件 856 2009-04-25 20:39 IRIS—RFclassification\RF_Class_C\Compile_Check
文件 557 2009-05-17 03:11 IRIS—RFclassification\RF_Class_C\compile_linux.m
文件 1718 2010-02-06 16:44 IRIS—RFclassification\RF_Class_C\compile_windows.m
文件 5280 2011-06-22 17:15 IRIS—RFclassification\RF_Class_C\data\IRIS.mat
文件 2693 2009-05-17 03:11 IRIS—RFclassification\RF_Class_C\Makefile
文件 2523 2009-05-17 03:11 IRIS—RFclassification\RF_Class_C\Makefile.windows
文件 20992 2010-02-06 16:29 IRIS—RFclassification\RF_Class_C\mexClassRF_predict.mexw32
文件 26624 2010-02-06 16:44 IRIS—RFclassification\RF_Class_C\mexClassRF_predict.mexw64
文件 32256 2010-02-06 16:29 IRIS—RFclassification\RF_Class_C\mexClassRF_train.mexw32
文件 46080 2010-02-06 16:44 IRIS—RFclassification\RF_Class_C\mexClassRF_train.mexw64
文件 6848 2009-04-25 21:39 IRIS—RFclassification\RF_Class_C\precompiled_rfsub\win32\rfsub.o
文件 9840 2009-04-25 20:39 IRIS—RFclassification\RF_Class_C\precompiled_rfsub\win64\rfsub.o
文件 3255 2010-02-06 17:05 IRIS—RFclassification\RF_Class_C\README.txt
文件 9840 2009-04-25 20:39 IRIS—RFclassification\RF_Class_C\rfsub.o
文件 33889 2009-05-17 03:11 IRIS—RFclassification\RF_Class_C\src\classRF.cpp
文件 8947 2009-05-17 03:11 IRIS—RFclassification\RF_Class_C\src\classTree.cpp
文件 7678 2009-04-25 20:39 IRIS—RFclassification\RF_Class_C\src\cokus.cpp
文件 1189 2009-04-25 20:39 IRIS—RFclassification\RF_Class_C\src\cokus_test.cpp
文件 5225 2009-05-17 03:11 IRIS—RFclassification\RF_Class_C\src\mex_ClassificationRF_predict.cpp
文件 8545 2009-05-17 03:11 IRIS—RFclassification\RF_Class_C\src\mex_ClassificationRF_train.cpp
文件 4676 2009-04-25 20:39 IRIS—RFclassification\RF_Class_C\src\qsort.c
文件 5186 2009-05-17 03:11 IRIS—RFclassification\RF_Class_C\src\rf.h
文件 15851 2009-04-25 20:39 IRIS—RFclassification\RF_Class_C\src\rfsub.f
文件 9609 2009-05-17 03:11 IRIS—RFclassification\RF_Class_C\src\rfutils.cpp
文件 9865 2009-05-17 03:11 IRIS—RFclassification\RF_Class_C\src\twonorm_C_wrapper.cpp
文件 601 2014-11-23 22:10 IRIS—RFclassification\RF_Class_C\test_ClassRF_extensively.m
文件 10420 2014-11-23 22:10 IRIS—RFclassification\RF_Class_C\tutorial_ClassRF.m
文件 1783 2009-04-25 20:39 IRIS—RFclassification\RF_Class_C\twonorm_C_devcpp.dev
............此处省略13个文件信息
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