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This report describes a continuing research effort in software reliability which was first reported in 'System Test Methodology,' Naval Postgraduate School, Vol I NPS55SS75072A, Vol. II NPS 55SS75072B (1975). The work just completed involved: improvement of the software error simulation model; validation of the software error simulation model; and analysis of program complexity with simulation and analytical models, using 44 Naval Tactical Data System procedures. The results which were achieved are the following: (1) all validation tests were passed; however simulation results were generally higher than analytical results and (2) the general direction of the relationship between complexity measures and error detection was as expected; however, considerable variability was exhibited when single independent variables were used. It appeared that a multivariable model involving error detection and several program complexity measures would be more appropriate. (Author) supported by the Naval Air Development Center, Warminster, Pennsylvania http://archive.org/details/softwareerrordet00schn |