Question about Text Mining Processes

ITDO

Hello,

 

i would be very thankful for some kind of help! I am new at RM. So i want to do a kind of Sentiment Analysis in Social Media. I have a word list with words ranked negativ and positiv (rows in excel sheet: id, text, sentiment) . And now want to do a model where i can input a new excel sheet (rows : id,text). So in this document are e.g. comments from Facebook.

 

I did the following! But there is the error: The input example set does not match the training example set. Missing attribute!

MartinLiebig

Dear ITDO,

 

you need to plugin the upper wordlist output port of Process Documents to the Lower Process Documents operator. If you do this RapidMiner will create exactly the same attributes in the lower PD operator than in the upper one (and with the right normalization for TF/IDF)

 

Best,

Martin