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.

Laplacian Matrix

Creates the laplacian matrix of the given network. The table has for each edge a row and for each node a column. The cell value is the weight of the node for the given edge.

Dialog Options

Sort matrix by node name
The columns are sorted by the node name
Normalize matrix
The entry value is -1/(sqrt(deg(i)*deg(j)) for connected nodes instead of -1.
Maximum number of parallel proceses
Decrease the number of parallel processes in case of memory problems.

Ports

Input Ports
0 Network to create the laplacian matrix
Output Ports
0 Network laplacian matrix table
This node is contained in Network Base Plug-in provided by Chair for Bioinformatics and Information Mining,University of Konstanz,Germany.