[thread display] [new arrival display] [word search] [past log] [管理用]
| Subject | ： Re: SAD Update. V1.0.10.4.10a01 Fit |
| Date | ： 2011/02/03(Thu) 08:11:30 |
| Contributor | ： K. Oide |
Dear Users,
1. On top of the previous change, to obtain the covariant matrix was improved to enable analytic differentiation even when the equation to fit contains Part whose index is the independent variable. This kind of change will be also applied for similar errors with Fit or Plot in future.
2. Derivative of Erf was wrong by a factor of Sqrt[Pi].
> Dear Users,
>
> 1. The value of ConfidenceInterval by Fit and FitPlot was changed. It has been Sqrt[Cii], where Cii is the diagonal component of the covariant matrix, but it may not be right. Now it is changed to Sqrt[ DeltaChisq Cii], where DeltaChisq is the solution of
>
> GammaRegularized[nvar/2, DeltaChisq/2 ] == Erfc[Sqrt[1/2]] .