fixing this error?

2 次查看（过去 30 天）
shivan artosh
shivan artosh 2020-9-9
评论： shivan artosh 2020-9-10
i want to calculate precision , recall , f-score and ...., but i get this erro:
Undefined function 'diag' for input arguments of type 'mlearnlib.graphics.chart.ConfusionMatrixChart'.
Error in SHIVANaugmented (line 74)
tp_m = diag(cm);
==============================================the following is a part of my code:
cm=confusionchart (imdsValidation.Labels, YPred);
%%
tp_m = diag(cm);
for i = 1:2 % number of classes
TP = tp_m(i);
FP = sum(cm(:, i), 1) - TP;
FN = sum(cm(i, :), 2) - TP;
TN = sum(cm(:)) - TP - FP - FN;
Accuracy = (TP+TN)./(TP+FP+TN+FN);
TPR = TP./(TP + FN);%tp/actual positive RECALL SENSITIVITY
if isnan(TPR)
TPR = 0;
end
PPV = TP./ (TP + FP); % tp / predicted positive PRECISION
if isnan(PPV)
PPV = 0;
end
TNR = TN./ (TN+FP); %tn/ actual negative SPECIFICITY
if isnan(TNR)
TNR = 0;
end
FPR = FP./ (TN+FP);
if isnan(FPR)
FPR = 0;
end
FScore = (2*(PPV * TPR)) / (PPV+TPR);
if isnan(FScore)
FScore = 0;
end
end
%%
save youRnetwork net
  2 个评论
Walter Roberson
Walter Roberson 2020-9-9
A confusion chart is a graphic object. What are you hoping that diag() of one would return?

请先登录，再进行评论。

请先登录，再回答此问题。

采纳的回答

Walter Roberson
Walter Roberson 2020-9-10
tp_m = diag(cm.NormalizedValues);
  5 个评论
显示 3更早的评论
Walter Roberson
Walter Roberson 2020-9-10
Go back to your original code and change
cm=confusionchart (imdsValidation.Labels, YPred);
to
cc = confusionchart (imdsValidation.Labels, YPred);
cm = cc.NormalizedValues;
shivan artosh
shivan artosh 2020-9-10
excellent it is working now. thank you

请先登录，再进行评论。

更多回答（0 个）

类别

在 Help Center 和 File Exchange 中查找有关 Recognition, Object Detection, and Semantic Segmentation 的更多信息

标签

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by