function?[treetrain_targets]=C4_5（featurestargetsinc_node）
%?Classify?using?Quinlan‘s?C4.5?algorithm
%?Inputs:
%?	features	-?Train?features
%	targets	????-?Train?targets
%	inc_node????-?Incorrectly?assigned?samples?at?a?node
[NiM]=size（features）;
Nu=10;
discrete_dim=zeros（1Ni）;
for?i=1:Ni
Nb=length（unique（features（i:）））;
if?（Nb<=Nu）
discrete_dim（i）=Nb;
end?
end
disp（‘Building?tree‘）
tree?=?make_tree（featurestargets?inc_node?discrete_dim?max（discrete_dim）?0）;
disp（‘Building?decision?surface?using?the?tree‘）
train_targets		=?use_tree（features?1:M?tree?discrete_dim?unique（targets）M1:M）;

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----

?????文件???????2890??1999-01-05?20:45??heart_train_labels_1.asc

?????文件??????20900??1999-01-05?20:45??heart_test_data_1.asc

?????文件???????1700??1999-01-05?20:45??heart_test_labels_1.asc

?????文件??????35530??1999-01-05?20:45??heart_train_data_1.asc

?????文件????????629??2010-05-27?16:22??C4_5.m

?????文件????????528??2010-05-22?15:35??classifier_error.m

?????文件???????2265??2010-05-20?17:08??make_tree.m

?????文件????????468??2010-05-22?12:26??test_error.m

?????文件???????1081??2010-05-21?15:22??use_tree.m

?????文件???????1360??2010-05-22?12:22??usetree_test.m

-----------?---------??----------?-----??----

????????????????67351????????????????????10