Apply the discretize operator at each year
Hi RapidMiner community,
I am working on a project where I have to analyze the world economy by calculating the GDP and class them into 4 quartiles at each year.
I’ve used the discretize by frequency operator. However, when I apply it, it discretizes the whole dataset into 4 quartiles (that contains data for more than 60 years), and I would like to apply this operator and find the 4 quartiles at each year (so it will have different countries within the first quartile in 1950 and in 2000 for example).
Do you have any ideas how I could proceed?
Thanks for your time!
Best Answer
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Hi,
the easiest way is to use Group into Collection from operator toolbox, group into years and use Loop Collection afterwards to calculate yourquantiles per year.
Cheers,
Martin
2
Altair EmployeeAnswers
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Hi,
the easiest way is to use Group into Collection from operator toolbox, group into years and use Loop Collection afterwards to calculate yourquantiles per year.
Cheers,
Martin
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Great that works! I hadn't those operator and had to download the extension
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However, after the "loop collection" we have to put an specific output. The best I found is the "Select" operator, but I can select only one year at the time. Is there a solution where I can select more than one, or even better have the whole data treated in the loop for each year on the same table?
Thanks a lot for your previous answers, that help me a lot!1 -
Hi,
have a look at the Append operator. it can make a table out of the collection again.
Cheers,
Martin
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That's exactly what I needed!
Thanks a lot, I've been turning around for quite a while 1