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My Data contains many missing values(blank space) or symbols like"?".How do we remove that??

ed1305ed1305 Member Posts: 8 Contributor I

How to fill these blank spaces and remove "?"And also for numeric variable how do i set the blank spaces to mean or median value

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    kaymankayman Member Posts: 662 Unicorn
    You can use the 'declare missing value' operator to change the ? to a missing (null) value. In order to make an empty field missing/null you can use the trim operator.

    Note that the ? might not be a real character, but simply the way Rapidminer indicates a missing value.
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