Problem with Term Frequency

Hi, 

I have a text and I want to extract the term frequency. Aftrer applying a stemmer node and other preprocessing (stop word filter, punctuation erasure, etc.), I used the BoW node and the term frequencies node on the follwoing text:

  • Reviews of Apple's new iPhone 8 and 8 Plus have been laudatory. However, the reviewers can't seem to get their minds off  the jewel of the Apple universe, the iPhone X. Both the iPhone 8 and 8 Plus are "awesome" and better than last year's models -- but iPhone shoppers who want to be part of the future will save their money and buy an iPhone X later in the year, suggested reviewer David Pierce.


The output regarding the absolute term frequency is strange. The stemmed term review has a an absolute term frequency of 6 and the stemmed term iPhone has a frequency of 10. 
I only count review 3 times and iPhone  5 times. 

Someone has an idea? 

Attached, you find the output table of the term frequency node. 

 

Thank you for help
 

Hi, 

have found an explaination to my problem in another forum post: 


https://www.knime.com/forum/knime-textprocessing/understanding-the-bow-tf-and-idf-nodes-in-textprocessing