Cart (Loading....) | Create Account
Close category search window

Maximum likelihood voting for fault-tolerant software with finite output-space

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

1 Author(s)
Leung, Y.-W. ; Dept. of Comput., Hong Kong Polytech. Univ., Hong Kong

When the output space of a multiversion software is finite, several software versions can give identical but incorrect outputs. This paper proposes a maximum likelihood voting (MLV) strategy for multiversion software with finite output-space under the assumption of failure independence. To estimate the correct result, MLV uses the reliability of each software version and determines the most likely correct result. In addition, two enhancements are made to MLV: (1) imposition of a requirement α* that the most likely correct output must have probability of at least α*; and (2) the voter can estimate when it has received one or more outputs from the software versions. If the probability that the estimated result is correct and is at least α*, then it immediately gives this estimated output. Since the voter need not wait for all the outputs before it can estimate, the required mean execution time can be reduced. The numerical results show that these MLV strategies have better performance than consensus voting and majority voting, especially when the variation of software version reliability is large. Enhancement #2 can appreciably reduce the mean execution time, especially when the software versions have larger execution time standard-deviation

Published in:

Reliability, IEEE Transactions on  (Volume:44 ,  Issue: 3 )

Date of Publication:

Sep 1995

Need Help?

IEEE Advancing Technology for Humanity About IEEE Xplore | Contact | Help | Terms of Use | Nondiscrimination Policy | Site Map | Privacy & Opting Out of Cookies

A not-for-profit organization, IEEE is the world's largest professional association for the advancement of technology.
© Copyright 2014 IEEE - All rights reserved. Use of this web site signifies your agreement to the terms and conditions.