Hello community,
as proposed by Tammy Powlas, I'm taking over my question from this blog to here:
1) Why do some results show trend lines and others don't?
2) What does the horizon warning mean? I found some warnings with 2, 3 or 4 as maximum horizon.
3) How can the structure file be optimized? Is there a how-to or SCN document/blog available?
4) Is there a way to analyze more than only one company at a time?
I would like to load the whole DAX (German main index) and use the same ~20 key figures of all companies for finding the results per company.
Since all shares have the "same attention" (like when in DAX or SDAX or MDAX) I would like to use additional "trends" within the market for analysis.
Is there somehow a "learning effect" I can initiate in the tool by using different data with same variables?
5) Is there a way to use no 4) "more companies at once" and getting only the trend lines per company as result ... not the single predicted values?
6) How do I find out which of the 20 key figures I should keep or change for better results?
7) How does PA deal with mixed input of "total values" and "percentage key figures"?
8) How can I tell PA which relationships exist between key figures, e.g. those which are an outcome of a formula using the weekly share value.
9) I checked the logs and found statements like:
"The automatic variable selection process discarded all the extra-predictable variables when estimating the trend(<list-of-variables>)" or
"The trend model (Regression<list-of-variables>...has been discarded from the competition." What does this mean?
Are all my 20 key figures in the file neglected and the forecast is based only on the historic share values? What could be the reason?
Please use the numbers above to relate your answer(s) to the respective question(s)...
My feeling is that what is shown in this video http://scn.sap.com/docs/DOC-62239 can't be everything I can do with "time series analysis".
Or is what I found out in my blog really the complete functionality, as of today?
Thanks, Martin