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Subject: Re: the mathematic relationship between two series of data
Date: Sun, 13 Jul 2008 13:45:03 +0000 (UTC)
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Hi,John,

"it sounds as if you do not have any mechanistic or 
physical model for yourdata", That's to the point. 
Actually, in my former dataset, A is the interval of a 
series of measurment value and B is corresponding 
cumulative probability. As there is no reference about the 
distribution rule of such measurment, at first i think it 
would be power-law which may be accord with the real life 
condition.

I had no clear idea until now. Why it appears to be a 
piecewise quadratic? why it has a small break? In fact, A 
is the result of another matalb programming which is point 
to an adjacency matrix.

Your suggestions do give me some hints and clues. I need to 
think carefully about the mechanism of the independent 
variable and its real life meaning.

BTW, Is estimatenoise to used to evaluate or improve the 
curvefitting precision? It is obiviously important to be 
considered. But for me, this curvefitting process is 
something like data mining. i concerns what relationship 
the dataset emerge and why it appears like that.

Cheers!

Hong