Finding trends and predicting sales figures

rabarbarrabarbar Member Posts: 1 Contributor I
edited November 2018 in Help
Hello everyone!  :) I couldn't find solution for my problem, so i decided to register here and ask you  ;)

I have a table with sales and time, like this:
I triend linear regression, after setting date as ID and sales as label, I have no other attributes... How can I handle this?

How can I predict sales in next months? Of course this dataset is very simple, just to understand the tool, later I would like to apply this to non-linear issues.

Thanks for your help!


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    MariusHelfMariusHelf RapidMiner Certified Expert, Member Posts: 1,869 Unicorn
    Do not set the date as id, but use it as input variable, since you want to predict sales over time.

    It may be possible that the underlying Java will have problems with dates as regular attribute. In that case, use the Set Role operator to create an id (a running idx), set the role of id to regular and in this case the date column back to id.
    Then you can use the linear regression to get the job done.

    Best regards,
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