hi,
TN=0 in all cases, with this how can i plot the ROC, i need help in this
regard.
thank you.
Date: Thu, 16 Aug 2012 09:47:20 -0700
From: ml-node+s789695n4640509...@n4.nabble.com
To: vijay...@outlook.com
Subject: Re: no true negative data, need roc curve
To clarify:
Is TN = 0 or do you not know TN (N)?
On 16.08.2012, at 11:51, vjyns wrote:
> Hi,
>
> I want to plot ROC curve for my detection algorithm which detects
> features in different images at two different thresholds.
>
> 6 different images used and obtained tp, fp and fn. No tn in my case.
>
> in first threshold run i obtained 6 values of tp,fp and fn. In second
> threshold run agian i got 6 more.
>
> i had calculated tpr and fpr. How to plot ROC in this case.
>
> Is this possible to plot ROC curve in this case? If s, please guide me to
> plot that.
>
> thank you.
>
> http://r.789695.n4.nabble.com/file/n4640474/in1.png
>
>
>
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