Predictive analysis of text

amotleyamotley MemberPosts:17Contributor I
edited November 2018 inHelp

I am using predictive analysis to predict missing valolues in my data set. However, I can only get it to predict numerical values, and only based on patterns of other numerical values.

How can I predict textual values, based on both numerical and text values that are in my data set, and do the same thing for numerical values?

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Answers

  • yyhuangyyhuang Administrator, Employee, RapidMiner Certified Analyst, RapidMiner Certified Expert, MemberPosts:363RM Data Scientist

    You are working on the missing data. Have you tried missing value imputation operatorImpute Missing Valuesin Rapidminer?

    Let's give you an example.

    Recall that we have missing values in titanic passenger data. In the attached process we can leverage some supervised learners, K-NN or Naïve Bayes or any preferred algorithm, nested inside the ‘impute missing values’ to estimate missing values. I used a K-NN (k=3) scheme to impute the missing values of Age (num), Passenger Fare(num), and Cabin(polynomial or 'text' as you name), Port of Embarkation (polynomial), etc.

    imputation.PNG

    Hope this helps.

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