Due to recent updates, all users are required to create an Altair One account to login to the RapidMiner community. Click the Register button to create your account using the same email that you have previously used to login to the RapidMiner community. This will ensure that any previously created content will be synced to your Altair One account. Once you login, you will be asked to provide a username that identifies you to other Community users. Email us at Community with questions.

Stuck at LDA process. No results are coming

lambamanika07lambamanika07 Member Posts: 24 Maven
in Help
I updated my Rapidminer and from that instant I can not get any result from my LDA process. I am attaching the screenshot for the process and the sub-processes I am trying out for LDA for last 2-3 days but 'NA' as results is showing. Kindly help.

Best Answer

Answers

  • MartinLiebigMartinLiebig Administrator, Moderator, Employee, RapidMiner Certified Analyst, RapidMiner Certified Expert, University Professor Posts: 3,525 RM Data Scientist
    Hi,
    can you please check if the collection of documents contains proper documents? I.e there are items in and there is also text?

    Best,
    Martin
    - Sr. Director Data Solutions, Altair RapidMiner -
    Dortmund, Germany
  • lambamanika07lambamanika07 Member Posts: 24 Maven
    Hi Martin

    Yes, I have checked many times. I tried with text files and pdf files both. I tried even with different text samples but I had no luck! The results were coming like in the screenshot as NA.
  • MartinLiebigMartinLiebig Administrator, Moderator, Employee, RapidMiner Certified Analyst, RapidMiner Certified Expert, University Professor Posts: 3,525 RM Data Scientist
    edited September 2019
    Hi,
    is this 'western' text? LDA uses a default tokenization on this tokens like spaces and so on. This may totally fail if this is not in latin alphabet?

    Best,
    Martin
    - Sr. Director Data Solutions, Altair RapidMiner -
    Dortmund, Germany
  • lambamanika07lambamanika07 Member Posts: 24 Maven
    Hi Martin

    The text is in English language. I have run the same samples before also for testing few weeks ago and it worked fine. That time I was using the 8 version of Rapidminer. I am facing this problem from the moment I upgraded to the latest 9 version. I do not think the up gradation of the version would be creating any problem but I am telling you just in case. 
  • MartinLiebigMartinLiebig Administrator, Moderator, Employee, RapidMiner Certified Analyst, RapidMiner Certified Expert, University Professor Posts: 3,525 RM Data Scientist
    Hi,
    can you maybe share data and processes via private message? I would love to have a look at this.

    BR,
    Martin
    - Sr. Director Data Solutions, Altair RapidMiner -
    Dortmund, Germany
  • lambamanika07lambamanika07 Member Posts: 24 Maven
    Hi Martin

    I have sent you a personal message with the sample text and the process. Thank you for you help in advance.
  • lambamanika07lambamanika07 Member Posts: 24 Maven
    It worked! Thank you so much. 
  • MartinLiebigMartinLiebig Administrator, Moderator, Employee, RapidMiner Certified Analyst, RapidMiner Certified Expert, University Professor Posts: 3,525 RM Data Scientist
    what was the problem here? UTF or the tokenization?

    BR,
    Martin
    - Sr. Director Data Solutions, Altair RapidMiner -
    Dortmund, Germany
  • lambamanika07lambamanika07 Member Posts: 24 Maven
    Hey Martin

    I made both the changes regarding UTF selection and adding tokenization operator as suggested in the process and then it worked. 

    With regards
    Manika
Sign In or Register to comment.