Thema: I can find no evidence of DNS 13 profile degradation over time.
I just finished measuring the accuracy of my time series of DNS 13 user profile backups going back to the release of Dragon NaturallySpeaking version 13. I have a standard recording of colloquial dictation of approximately 4000 words or just under 20 minutes. I made this recording several years ago with theBoomO microphone and I've used this recording as my standardized testing for Dragon accuracy.
I can find no evidence of DNS 13 profile degradation over time.
The most current profile that I measured has been Accuracy Tuning optimized 12 times with three different primary microphones and three additional intermittently used microphones. None of these microphones are theboomO.
All of these individual profiles are derived from a single original profile of BestMatch V Large Vocabulary, where I had individually trained each of my 2500 custom words plus analyzed approximately 1 million words of my technical writing, emails and forum posts for adapting to my writing style.
I also incrementally analyze my sent emails every month, forum posts, plus analyze any new technical documents based on my project workload. I individually train each new technobabble custom word. This is necessary to have any kind of reasonable accuracy with my technobabble dictation since particularly with cloud computing, the technical and product vocabulary is changing very rapidly.
I save and export these profiles to my network server with annotations about the profile after each Accuracy Tuning to easily provide comparison measurements.
To emphasize, this measurement is against colloquial and not technical dictation. Using Rüdiger's accuracy measuring tool, the variation in accuracy across all of these profiles is only 0.6%! The average accuracy is 98.7%
Note, all the machines that I use have SSDs, the profiles are exported and stored on my network server, I never let my computers sleep, I never let my computers hibernate, I make sure the USB ports are powered at all times and I shut down each computer (power off) after saving my user profile.
The text of the test recording has NEVER been used before in any of these profiles. To run these tests, I pull the profiles off of my network backup server. Once I complete a measurement, I then delete that profile from my Dragon instance on that workstation so there is no textual contamination.