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Dynamic LDA

aileenzhouaileenzhou Member Posts: 12 Contributor II
I used Extract Topics from Data (LDA). The result makes sense. However, I want to see how some topics fade away or become more popular over the years. Please can you help? Thank you.

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    MartinLiebigMartinLiebig Administrator, Moderator, Employee, RapidMiner Certified Analyst, RapidMiner Certified Expert, University Professor Posts: 3,524 RM Data Scientist
    Hi,

    why don't you chart something like avg(congidence(topic_1)) over time?

    Best,
    Martin
    - Sr. Director Data Solutions, Altair RapidMiner -
    Dortmund, Germany
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    aileenzhouaileenzhou Member Posts: 12 Contributor II
    edited May 2021
    Thank you, Martin. But what 'congidence' refer to? I can't find this operator. 
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    MartinLiebigMartinLiebig Administrator, Moderator, Employee, RapidMiner Certified Analyst, RapidMiner Certified Expert, University Professor Posts: 3,524 RM Data Scientist
    sorry, i mean confidence.

    Best,
    martin
    - Sr. Director Data Solutions, Altair RapidMiner -
    Dortmund, Germany
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