TY - GEN
T1 - Evaluating degree of systems' dependability with semi-structured assurance case
AU - Nakazawa, Jin
AU - Matsuno, Yutaka
AU - Tokuda, Hideyuki
PY - 2011/6/16
Y1 - 2011/6/16
N2 - Due to the continuous penetration of computer systems into our daily lives, their dependability is critical to the users. Particularly, ubiquitous embedded systems, such as elderly care and medication management, need to provide a high degree of dependability, since their failure may result in loss of a human life. Developers, users, and other stakeholders of such systems thus require mutual agreement on the degree of systems' dependability. In this paper, we propose to use an extended form of assurance cases, called D-Case, to describe how a system achieves dependability with meaningful evidences. One of the two major features of our scheme is to use a common tree structure in D-Case to enable developers and users of different systems to compare their dependability. The other is a scheme to calculate the degree of dependability from D-Case. Users can learn the degree more intuitively than grasping multiple metrics like MTBF and MTTF, or reading through a D-Case itself.
AB - Due to the continuous penetration of computer systems into our daily lives, their dependability is critical to the users. Particularly, ubiquitous embedded systems, such as elderly care and medication management, need to provide a high degree of dependability, since their failure may result in loss of a human life. Developers, users, and other stakeholders of such systems thus require mutual agreement on the degree of systems' dependability. In this paper, we propose to use an extended form of assurance cases, called D-Case, to describe how a system achieves dependability with meaningful evidences. One of the two major features of our scheme is to use a common tree structure in D-Case to enable developers and users of different systems to compare their dependability. The other is a scheme to calculate the degree of dependability from D-Case. Users can learn the degree more intuitively than grasping multiple metrics like MTBF and MTTF, or reading through a D-Case itself.
UR - http://www.scopus.com/inward/record.url?scp=79958704539&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=79958704539&partnerID=8YFLogxK
U2 - 10.1145/1978582.1978607
DO - 10.1145/1978582.1978607
M3 - Conference contribution
AN - SCOPUS:79958704539
SN - 9781450302845
T3 - ACM International Conference Proceeding Series
SP - 111
EP - 112
BT - Proc. of the 13th European Workshop on Dependable Computing, EWDC 2011
T2 - 13th European Workshop on Dependable Computing, EWDC 2011
Y2 - 11 May 2011 through 12 May 2011
ER -