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"Problems in importing a .csv file to Rapid Miner"
I am using Rapid Miner 5.0.010 version in a data mining project (A churn prediction system uding decision tree approach).
When I create a data set by importing a .csv file the data set gets created successfully, but some attribute values in some records are displayed as missing values. (Question marks are displayed in value field). But these values are not actually missing in .csv file.
That is data in .csv file and data set are incompatible.
Data Set contains about 26 fields and 20000 records. Values are always missing in same 6 fields (Only in some records).
Does anyone have a solution for the problem?