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.

Parameter Optimization Loop Start

This loop starts a parameter optimization loop. In the dialog you can enter several parameters with an interval and a step size. The loop will vary these parameters following a certain search strategy. Each parameter is output as a flow variable. The parameters can the be used inside the loop body either directly or by converting them with a Variable to Table node into a data table.
Currently two search strategies are available:

Dialog Options

From
The interval start value (inclusive).
To
The interval end value (inclusive).
Step
The step size by which the value is increased after each iteration. Negative step sizes are possible, if from is greater than to
Integer?
Check this if the parameter should be an integer. Otherwise it is a real number.
Search strategy
Select the search strategy that should be used (see above).
Use random seed
Check this option and supply a seed if a defined seed for the random number generator should be used (only for search strategies that make use of random values). Defining a seed makes the results reproducible. If this option is not selected a new random seed will be selected each time the loop is re-run.

Ports

Output Ports
0 A parameter combination as flow variables
This node is contained in KNIME Optimization extension provided by KNIME GmbH, Konstanz, Germany.