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GeneralRe: Start with a group of size X, divide it into Y groups, Z times, minimize overlap Pin
Kenneth Haugland9-Aug-18 22:25
mvaKenneth Haugland9-Aug-18 22:25 
GeneralRe: Start with a group of size X, divide it into Y groups, Z times, minimize overlap Pin
Gerry Schmitz11-Aug-18 9:19
mveGerry Schmitz11-Aug-18 9:19 
GeneralRe: Start with a group of size X, divide it into Y groups, Z times, minimize overlap Pin
Gerry Schmitz10-Aug-18 7:38
mveGerry Schmitz10-Aug-18 7:38 
GeneralRe: Start with a group of size X, divide it into Y groups, Z times, minimize overlap Pin
Stefan_Lang27-Aug-18 0:25
Stefan_Lang27-Aug-18 0:25 
AnswerRe: Start with a group of size X, divide it into Y groups, Z times, minimize overlap Pin
Patrice T1-Sep-18 16:42
mvePatrice T1-Sep-18 16:42 
QuestionSimplex Downhill... Pin
User 110609793-Aug-18 9:35
User 110609793-Aug-18 9:35 
AnswerRe: Simplex Downhill... Pin
Stefan_Lang5-Aug-18 21:33
Stefan_Lang5-Aug-18 21:33 
GeneralRe: Simplex Downhill... Pin
User 110609796-Aug-18 4:47
User 110609796-Aug-18 4:47 
Wow! First of all thank you _very very much_ for your time and your great answer. I Need some time to go through all this, especially "Simulated Annealing" which I do not know until now.

Quote:
But did you mean this
Yes exactly, I'm using Amoeba. But meanwhile (it looks like) I recognized, that I'm on the wrong path (not completely sure about it).

Basically I Need to solve a more or less easy Thing:
t= w * b + A * c
where
t is a vector (400 items)
w is a scalar
b is a vector (400 items)
A is a 400x4 matrice (4 can be 1...8)
c is a vector (4 items, 1...8)

t is the target, b is the current Situation (captured by a measurement). The question is: what are the optimal w and c to come from b to t while w should not differ too much from 1 (1-w as small as possible and w <= 1) and c should be as small as possible and all items need to be >= 0. In other words: How much I Need to throw away from b and what I Need to add with c to bring b as good as possible to t. At the Moment "as good as possible" means best curve fit, but Needs later to be Extended by a completely non linear function (spectroscopy analysis), that's why the simplex approach.

All this sounds so easy, but the Problem is: Sometimes (when the math model fits the physics well), b is a linear combination of A and that is a Problem, that the simplex method usually Ends in a w=0...

Ok, using simplex here is most probably the wrong approach. Meanwhile I calculated this with "Singular-value decomposition" of A.The results are great, but I'm afraid I choose too much nice test data. With SVD I calculate a scan for different w's: t-w*b= A*c. At the Moment I don't trust the results because I always get c vector with positive items. This would be great, because this is the what I need, but for me it Looks more like a mistake from my side. Why I should be that lucky to get always positive c values...


Sorry to text you that much.
Bruno
It does not solve my Problem, but it answers my question


modified 19-Jan-21 21:04pm.

GeneralRe: Simplex Downhill... Pin
Stefan_Lang7-Aug-18 2:21
Stefan_Lang7-Aug-18 2:21 
GeneralRe: Simplex Downhill... Pin
User 110609797-Aug-18 21:23
User 110609797-Aug-18 21:23 
GeneralRe: Simplex Downhill... Pin
Stefan_Lang7-Aug-18 22:05
Stefan_Lang7-Aug-18 22:05 
GeneralRe: Simplex Downhill... Pin
User 110609798-Aug-18 1:41
User 110609798-Aug-18 1:41 
GeneralRe: Simplex Downhill... Pin
Stefan_Lang8-Aug-18 2:11
Stefan_Lang8-Aug-18 2:11 
GeneralRe: Simplex Downhill... Pin
User 110609798-Aug-18 10:18
User 110609798-Aug-18 10:18 
Questionhelp me~ for use..... #define macro ## #@ # Pin
dsyoon ds29-Jul-18 17:07
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AnswerRe: help me~ for use..... #define macro ## #@ # Pin
Daniel Pfeffer29-Jul-18 20:42
professionalDaniel Pfeffer29-Jul-18 20:42 
AnswerRe: help me~ for use..... #define macro ## #@ # Pin
Richard MacCutchan29-Jul-18 21:26
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AnswerRe: help me~ for use..... #define macro ## #@ # Pin
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QuestionRead text from a file and realloc when needed Pin
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AnswerRe: Read text from a file and realloc when needed Pin
Richard MacCutchan6-Jul-18 4:08
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GeneralRe: Read text from a file and realloc when needed Pin
claymorehack7-Jul-18 22:46
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GeneralRe: Read text from a file and realloc when needed Pin
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