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View Full Version : Method for breaking ties in equivalent system for RGA


mclarena
July 24th, 2007, 09:18 AM
We are trying to collect up input data to feed RGA Professional for multiple systems with unknown equivalent times. We have a report to query our failure data and put it in an appropriate format for RGA. However, our report to read the fix effectiveness factors of BD modes doesn't sort them in the same order as does RGA, for those with ties (same first time to failure). Looking at the equivalent system's data, the order is not always the same for the ties as it was in the original system. This leads me to question the tie-breaking procedure: original order, mode classification, comment field, etc.

If the logic the software is using to come up with the order of the equivalent system for ties (this is then used to determine the BD modes) could be shared, we could mimic it in our report. Otherwise, we are forced to look at every tie manually and see whether the order is matched. The reason we created a report to sort out the fix effectiveness factors by first seen of the equivalent unit was so that it could be done automatically.

David
July 26th, 2007, 10:52 AM
Probably the easiest way to get around this is to use the import functionality. An example called Multiple Systems with Delayed Fixes.rga is installed in the Examples\Pro directory. If you save this file as an Exel file and then open that file in Excel you will be able to see the format for importing Multiple Systems - Unknown data. The format includes all of the systems, failure times, classifications and effectiveness factors (EF). This will remove the need for copying and pasting the EF values into the Effectiveness Factor window.