The following node is available in the Open Source KNIME predictive analytics and data mining platform version 2.7.1. Discover over 1000 other nodes, as well as enterprise functionality at http://knime.com.

TF

Computes the relative term frequency (tf) of each term according to each document and adds a column containing the tf value. The value is computed by dividing the absolute frequency of a term according to a document by the number of all terms of that document.

Dialog Options

Frequency options
Relative frequency
If relative frequency is checked, the relative term frequency is computed, otherwise the absolute term frequency.
Document selection
Document Column
Specifies the document column to use for frequency counting.

Ports

Input Ports
0 The input table which contains terms and documents.
Output Ports
0 The output table which contains terms documents and a corresponding frequency value.
This node is contained in KNIME Textprocessing Plug-in provided by KNIME GmbH, Konstanz, Germany.