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RapidMiner Server - Configured webservice in JSON output not working for decision tree meta data

dvelas25dvelas25 Member Posts: 5 Learner II
in Product Ideas
Hello RapidMiner community, I have been recently working with RapidMiner and I implemented a webservice that outputs a decision tree. When I configure the webservice in XML format, it correctly outputs the following:


But if I change it to JSON output, the decision tree data is lost:



Is there some bug with JSON output in RapidMiner Server 9.3?

P.D. Similary, I cannot get PerformanceVector in JSON but it works in XML...


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IC-1653 From engineering: "This is not a bug. The JSONFormatter only supports ExampleSets." Hence I am categorizing this as a feature request and opening it up for voting.

Comments

  • dvelas25dvelas25 Member Posts: 5 Learner II

    Hello, I attached the requested files.
  • MartinLiebigMartinLiebig Administrator, Moderator, Employee-RapidMiner, RapidMiner Certified Analyst, RapidMiner Certified Expert, University Professor Posts: 3,533 RM Data Scientist
    Hi,
    i am not sure if that XML export via Webservices is a feature. Internally we represent the tree as a XML, if i am not mistaken. It surprises me a bit that the WS is returning anything, if the output is not an example set.

    Anyway, maybe the operator 'Decision Tree to ExampleSet' in converters extension helps you. The result is an ExampleSet which you can return as a json.

    Best,
    Martin
    - Sr. Director Data Solutions, Altair RapidMiner -
    Dortmund, Germany
  • sgenzersgenzer Administrator, Moderator, Employee-RapidMiner, RapidMiner Certified Analyst, Community Manager, Member, University Professor, PM Moderator Posts: 2,959 Community Manager
    edited October 2019
    hi @dvelas25 thank you for this. I'm checking with engineering and will follow up as soon as I can.

    [EDIT: see status note at top of page]

    Scott
  • dvelas25dvelas25 Member Posts: 5 Learner II
    Hello RapidMiner support. Thanks for the suggestions, we used the converters extension and now it is exported in JSON. Although, I would think that implementing RapidMiner services by default in JSON would improve the speed of parsing data for web servers (When I started migrating my app from XML to JSON, we had time improvements over 5 times faster with JSON.
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