When studying the relating relations between the two variable numbers (x, y), we can get a series of binate data(x1, y1, x2, y2.....xm, ym), describing the data into the x - y orthogonal coordinate system(Chart), the points are found near a curve. suppose the one-variant non-linear variant of the curve such as (Formula 1)
y = a0 + a1 xi ^k (1)
There into, a0, a1 and k are arbitrary real numbers
To set the curve variant, the numbers of a0, a1 and k must be set. Use the same way with â€œThe Least Square Method data regressionâ€ based on the square sum of the deviation of the true measure value yi and computing value.
Order: Ï† = âˆ‘(yi - y)^2 (2)
Take (Formula 1) to (Formula 2) to get :
Ï† = âˆ‘(yi - a0 - a1 xik )^2 (3)
When the square of âˆ‘(yi - a0 - a1 xik ) is the smallest, we can use functionÏ† to get the partial differential coefficients of a0, a1 and k, make the three partial differential coefficients zero.
Get three variant groups about a0,a1 and k which are the unknown numbers, solve the groups can get mathematical model.
Also, we can judge the right of the mathematical model with the help of correlation coefficient R, statistical variable F, residual standard deviation S to judge, it is better that R tends to 1,the absolute value of F is bigger and S tends to 0. the validation is good, but error of model computing sometimes are big, to improve the mathematical model farther, the biggest error, equal error and the equal relating error of computing model are computed to validate the model.
The Method to do multivariate nonlinear model chart
China(internet addresses) have been known to break into CIA computers and they try to get western science information (so said NPR) so why should they not also be trying to extract information from EvC? I know we can say things here that do not exist in "everyday" life nor 2nd life.
The idea that they would steal information in last years' digital picture frames is just a really bad use of a good communication medium.
Does this mean that you are simply using EvC to advertise the "change discipline" Studio you linked above?
If you were interested in a discursive conversation on how numbers can relate to curves (whether the design exists or not etc)and so to what figures the thing might be put I suppose you would have something here to engage others as well as me on, but if you were simply trying to let EvC members know of the data manipulation capacity of the prodcut avered then perhaps you should have responded to Cathloic Scientist above (who uses the stuff?).
Soft presentation: Least Cubic Method is a new method for data regression analyse , it expanded Least Square Method, According to the principle, this program can be used to work out single factor linear data regression, multi factors linear data regression, single factor non-linear data regression, and multifactors non-linear data regression.
I need to know how your maths(sic!) relate to this image if I am to have any conversation with you.
You may feel that I am simply trying "to sell" my own ideas as you may be doing for a product but I am willing as a member of EVC to take the conversation where the thread goes, no matter what, even if this takes me off my own game plan.
You seem to be using EvC simply to promote a/your product. We all (I think I can speak for a gaggle of EvC) "got" that, at the first. I did. That much I know.