KNIME Base Nodes version 4.2.2.v202009241438 by KNIME AG, Zurich, Switzerland
This node uses the model as generated by a Correlation node to determine which columns are redundant (i.e. correlated) and filters them out. The output table will contain the reduced set of columns.
The filtering step works roughly as follows: For each column in the correlation model the count of correlated columns is determined given a threshold value for the correlation coefficient (specified in the dialog). The column with the most correlated columns is chosen to "survive" and all correlated columns are filtered out. This procedure is repeated until no more columns can be identified. The problem of finding a minimum set of columns to satisfy the constraints is difficult to solve analytically. This method applied here is known to be good approximation, however.
To use this node in KNIME, install KNIME Base nodes from the following update site:
You want to see the source code for this node? Click the following button and we’ll use our super-powers to find it for you.
Do you have feedback, questions, comments about NodePit, want to support this platform, or want your own nodes or workflows listed here as well? Do you think, the search results could be improved or something is missing? Then please get in touch! Alternatively, you can send us an email to firstname.lastname@example.org, follow @NodePit on Twitter, or chat on Gitter!
Please note that this is only about NodePit. We do not provide general support for KNIME — please use the KNIME forums instead.