In article construction multi-fragmental models of information system software dependability is considered. These models allow to describe variation of software failure rate at different stages of life cycle. The presented models allow to describe both magnifying, and reduction software defects failure rate and recovery of system after failures.
informative systems, programmatic facilities, planning defects, intensities of refusals and renewal, multiplefragment models, inlaid Markov chain
"Otsenka nadezhnosti informatsionnykh sistem s uchetom izmeneniia parametrov programmnykh sredstv" ,
Information Processing Systems,