improved projects

regression/lecture/regression-chapter.tex

@@ -16,8 +16,25 @@
 
 \input{regression}
 
-Example for fit with matlab functions lsqcurvefit, polyfit
+\section{Fitting in practice}
+
+Fit with matlab functions lsqcurvefit, polyfit
+
+
+\subsection{Non-linear fits}
+\begin{itemize}
+\item Example that illustrates the Nebenminima Problem (with error surface)
+\item You need got initial values for the parameter!
+\item Example that fitting gets harder the more parameter yuo have.
+\item Try to fix as many parameter before doing the fit.
+\item How to test the quality of a fit? Residuals. $\Chi^2$ test. Run-test.
+\end{itemize}
+
+\subsection{Linear fits}
+\begin{itemize}
+\item Polyfit is easy: unique solution!
+\item Example for overfitting with polyfit of a high order (=number of data points)
+\end{itemize}
 
-Example for overfitting with polyfit of a high order (=number of data points)
 
 \end{document}