MathGroup Archive 2009

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programatically creating and testing successive models

hi i'm new to mathematica. and have some background in using other
products like minitab and sca for creating models in statisitcs.

i am interested in understanding how one might create models against
different sequential subsets of data. the application is time series
forecasting. first i'd like to create a model to fit data points
1..100, then see its accuracy against points 100..125. then create a
model for points 26..125 and see its accuracy against points 126..150.
and repeat this successively.

how might one do this in mathematica? i have just started looking
through all the vast sections in here and there are lots. so i'm just
asking for direction - which modules to load if any, what programming
constructs to use, which say 3 sections of the documentation would get
me started, any hints about how to get the data into groups that can
be easily worked with for this application.

thanks for your help.

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