Parameter Stepping

Altering the input value of even a single rule or test condition will often cause changes that ripple throughout the system, directly affecting its performance characteristics, often in dramatic and unforeseen ways.

To assist users in gaining a clearer understanding of this important concept, Trading Blox™ incorporates an extremely powerful feature called Parameter Stepping. For any parameter, Parameter Stepping allows a range of values to be stepped through and tested-one increment at a time-all within the course of a single test.

Using Parameter Stepping, you can execute multiple parameter runs within a single test session, as follows:

First check the parameter stepping check box:

This will expand the single edit box to three separate edit boxes:

You can change the values in the edit boxes to control the stepping range and increment. The following shows the values that will result in six separate stepped parameter runs ranging from 2% to 3% in step increments of 0.2%, with values of 2%, 2.2%, 2.4%, 2.6%, 2.8% and 3%:

After running the test, the Summary Results for this test will contain a Run Summary List which shows the major performance measures for each of the values of the parameter. This list can be sorted by clicking any of the column headings with the mouse: