function?class_param?=?calc_class_param（class_calcclass）

%?calc_class_param?calculates?classification?parameters:
%?error?rate?non-error?rate?specificity?precision?and?sensitivity
%
%?class_param?=?calc_class_param（class_calcclass）;
%
%?input:
%?class???????????class?vector?[samples?x?1]
%?class_calc??????calculated?class?vector?[1?x?n]
%?
%?output:
%?class_param?????structure?containing?confusion?matrix?error?rate?non-error?rate?
%?????????????????accuracy?specificity?precision?and?sensitivity
%
%?The?main?routine?is?class_gui
%
%?Note?that?a?detailed?HTML?help?is?provided?with?the?toolbox.
%?See?the?HTML?HELP?files?（help.htm）?for?futher?details?and?examples
%
%?Classification?toolbox?for?MATLAB
%?version?4.0?-?October?2015
%?Davide?Ballabioabout
%?Milano?Chemometrics?and?QSAR?Research?Group
%?http://michem.disat.unimib.it/chm/

num_class?=?max（[max（class）?max（class_calc）]）;
nobj?=?size（class1）;

conf_mat?=?zeros（num_classnum_class+1）;
for?g?=?1:num_class
????in_class?=?find（class==g）;
????for?k?=?1:num_class
????????conf_mat（gk）?=?length（find（class_calc（in_class）?==?k））;
????end
????conf_mat（gnum_class?+?1）?=?length（find（class_calc（in_class）?==?0））;
end

%?sensitivity?specificity?precision?class?error?accuracy
accuracy?=?0;
for?g?=?1:num_class
????if?sum（conf_mat（:g））?>?0
????????precision（g）???=?conf_mat（gg）/sum（conf_mat（:g））;
????????sensitivity（g）?=?conf_mat（gg）/sum（conf_mat（g1:num_class））;
????else
????????precision（g）???=?0;
????????sensitivity（g）?=?0;
????end
????in?=?ones（num_class1）;?in（g）?=?0;
????red_mat?=?conf_mat（find（in）1:num_class）;
????specificity（g）?=?0;
????for?k?=?1:size（red_mat2）
????????if?k?~=?g;?specificity（g）?=?specificity（g）?+?sum（red_mat（:k））;?end;
????end
????if?sum（sum（red_mat））?>?0
????????specificity（g）?=?specificity（g）/sum（sum（red_mat））;
????else
????????specificity（g）?=?0;
????end
????false_negative_rate（g）?=?1?-?sensitivity（g）;
????false_positive_rate（g）?=?1?-?specificity（g）;
????accuracy?=?accuracy?+?conf_mat（gg）;
end
accuracy?=?accuracy/sum（sum（conf_mat（:1:num_class）））;

%?error?rates
not_ass?=?sum（conf_mat（:end））/nobj;
ner?=?mean（sensitivity）;
er?=?1?-?ner;

class_param.conf_mat?=?conf_mat;
class_param.ner?=?ner;
class_param.er??=?er;
class_param.accuracy??=?accuracy;
class_param.not_ass?=?not_ass;
class_param.precision?=?precision;
class_param.sensitivity?=?sensitivity;
class_param.specificity?=?specificity;

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????目錄???????????0??2017-03-21?16:10??classification_toolbox_4.0\classification_toolbox_4.0\
?????文件????????2495??2015-10-14?14:45??classification_toolbox_4.0\classification_toolbox_4.0\calc_class_param.m
?????文件????????1083??2015-10-14?14:51??classification_toolbox_4.0\classification_toolbox_4.0\calc_qt_limits.m
?????文件?????????907??2015-10-14?14:51??classification_toolbox_4.0\classification_toolbox_4.0\calc_reg_param.m
?????文件????????4627??2015-10-14?14:51??classification_toolbox_4.0\classification_toolbox_4.0\cartcv.m
?????文件????????1632??2015-10-22?15:13??classification_toolbox_4.0\classification_toolbox_4.0\cartfit.m
?????文件?????????743??2015-10-14?14:51??classification_toolbox_4.0\classification_toolbox_4.0\cartpred.m
?????文件???????31313??2015-10-22?11:18??classification_toolbox_4.0\classification_toolbox_4.0\class_gui.fig
?????文件???????88652??2015-11-05?13:18??classification_toolbox_4.0\classification_toolbox_4.0\class_gui.m
?????文件?????????192??2016-04-11?19:42??classification_toolbox_4.0\classification_toolbox_4.0\class_text.mat
?????文件????????2427??2015-10-14?14:51??classification_toolbox_4.0\classification_toolbox_4.0\dacompsel.m
?????文件????????5710??2015-10-14?14:51??classification_toolbox_4.0\classification_toolbox_4.0\dacv.m
?????文件????????4290??2015-10-22?15:19??classification_toolbox_4.0\classification_toolbox_4.0\dafit.m
?????文件????????2865??2015-10-14?14:51??classification_toolbox_4.0\classification_toolbox_4.0\dapred.m
?????文件????????1678??2015-10-14?14:51??classification_toolbox_4.0\classification_toolbox_4.0\data_pretreatment.m
?????文件????????1117??2015-10-14?12:06??classification_toolbox_4.0\classification_toolbox_4.0\help.htm
?????目錄???????????0??2017-03-21?16:10??classification_toolbox_4.0\classification_toolbox_4.0\help\
?????文件????????8023??2015-11-05?13:27??classification_toolbox_4.0\classification_toolbox_4.0\help\classparameters.htm
?????文件????????2136??2015-03-05?17:54??classification_toolbox_4.0\classification_toolbox_4.0\help\download.htm
?????文件???????12281??2015-10-14?11:11??classification_toolbox_4.0\classification_toolbox_4.0\help\example.htm
?????文件????????9259??2013-04-04?11:55??classification_toolbox_4.0\classification_toolbox_4.0\help\example_plsda_01.gif
?????文件????????5246??2013-04-04?11:52??classification_toolbox_4.0\classification_toolbox_4.0\help\example_plsda_02.gif
?????文件????????3186??2013-04-04?11:54??classification_toolbox_4.0\classification_toolbox_4.0\help\example_plsda_03.gif
?????文件????????7228??2013-04-04?11:57??classification_toolbox_4.0\classification_toolbox_4.0\help\example_plsda_04.gif
?????文件???????11294??2013-04-04?11:57??classification_toolbox_4.0\classification_toolbox_4.0\help\example_plsda_05.gif
?????文件????????5330??2013-04-04?11:58??classification_toolbox_4.0\classification_toolbox_4.0\help\example_plsda_06.gif
?????文件????????7335??2013-04-04?12:00??classification_toolbox_4.0\classification_toolbox_4.0\help\example_plsda_07.gif
?????文件????????3165??2013-04-04?12:01??classification_toolbox_4.0\classification_toolbox_4.0\help\example_plsda_08.gif
?????文件????????4771??2013-04-04?12:01??classification_toolbox_4.0\classification_toolbox_4.0\help\example_plsda_09.gif
?????文件????????8197??2013-04-04?12:03??classification_toolbox_4.0\classification_toolbox_4.0\help\example_plsda_10.gif
?????文件?????????589??2013-10-02?15:36??classification_toolbox_4.0\classification_toolbox_4.0\help\footer.htm
............此處省略111個文件信息