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From: Simon ?? on 4 Apr 2010 02:40
Is anyone who familiar with wentropy here? As we all know there are kinds of wentropy,such as shannon wentropy,threshold wentropy ,sure wentropy energy wentropy and norm wentropy. Here by sure wentropy for example,we have to get a threshold P before we calculate the sure wentropy of signal S,and here is the question:how to calculate this value P? I've tried many places,try to find any clue or formula with no result.I will appreciate it very much if anybody here could help me! Thank you!
From: Wayne King on 4 Apr 2010 07:00
"Simon ??" <newwestlife(a)tom.com> wrote in message <hp9c8o$jrd$1(a)fred.mathworks.com>...
> Is anyone who familiar with wentropy here? As we all know there are kinds of wentropy,such as shannon wentropy,threshold wentropy ,sure wentropy energy wentropy and norm wentropy. Here by sure wentropy for example,we have to get a threshold P before we calculate the sure wentropy of signal S,and here is the question:how to calculate this value P? I've tried many places,try to find any clue or formula with no result.I will appreciate it very much if anybody here could help me! Thank you!

Hi Simon, actually you don't have to use that input argument. P is an optional input. If you use 'shannon', or 'log energy' (or 'logenergy'), then you don't enter P as an input. Which option are you using for the type of entropy?

Wayne
From: Simon ?? on 4 Apr 2010 08:39
"Wayne King" <wmkingty(a)gmail.com> wrote in message <hp9rg6$6q1$1(a)fred.mathworks.com>...
> "Simon ??" <newwestlife(a)tom.com> wrote in message <hp9c8o$jrd$1(a)fred.mathworks.com>...
> > Is anyone who familiar with wentropy here? As we all know there are kinds of wentropy,such as shannon wentropy,threshold wentropy ,sure wentropy energy wentropy and norm wentropy. Here by sure wentropy for example,we have to get a threshold P before we calculate the sure wentropy of signal S,and here is the question:how to calculate this value P? I've tried many places,try to find any clue or formula with no result.I will appreciate it very much if anybody here could help me! Thank you!
>
> Hi Simon, you don't have to use that input argument. P is an optional input. If you use 'shannon', or (or 'logenergy'), then you don't enter P as an input. Which option are you using for the type of entropy?
>
> Wayne
Thank you for your reply first. I know that P is not used when choose 'shannon' or 'log energy' ,but actually I wanna try to use 'sure' and 'threshold', so P must be given here.Do you know anything about its calculation?
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