SwePub - sökning: id:"swepub:oai:DiVA.org:oru-90...

Numrering	Referens	Omslagsbild	Hitta
1.	Hierons, Robert M., et al. (författare) Hardness of deriving invertible sequences from finite state machines 2017 Ingår i: SOFSEM 2017: SOFSEM 2017: Theory and Practice of Computer Science. - Heidelberg : Springer Berlin/Heidelberg. - 9783319519623 - 9783319519630 ; , s. 147-160 Konferensbidrag (refereegranskat)abstract Many test generation algorithms use unique input/output sequences (UIOs) that identify states of the finite state machine specification M. However, it is known that UIO checking the existence of UIO sequences is PSPACE-complete. As a result, some UIO generation algorithms utilise what are called invertible sequences; these allow one to construct additional UIOs once a UIO has been found. We consider three optimisation problems associated with invertible sequences: deciding whether there is a (proper) invertible sequence of length at least K; deciding whether there is a set of invertible sequences for state set S′ that contains at most K input sequences; and deciding whether there is a single input sequence that defines invertible sequences that take state set S″ to state set S′. We prove that the first two problems are NP-complete and the third is PSPACE-complete. These results imply that we should investigate heuristics for these problems. © Springer International Publishing AG 2017.

Hierons, Robert M., et al. (författare)
Hardness of deriving invertible sequences from finite state machines
2017
Ingår i: SOFSEM 2017: SOFSEM 2017: Theory and Practice of Computer Science. - Heidelberg : Springer Berlin/Heidelberg. - 9783319519623 - 9783319519630 ; , s. 147-160
Konferensbidrag (refereegranskat)abstract
- Many test generation algorithms use unique input/output sequences (UIOs) that identify states of the finite state machine specification M. However, it is known that UIO checking the existence of UIO sequences is PSPACE-complete. As a result, some UIO generation algorithms utilise what are called invertible sequences; these allow one to construct additional UIOs once a UIO has been found. We consider three optimisation problems associated with invertible sequences: deciding whether there is a (proper) invertible sequence of length at least K; deciding whether there is a set of invertible sequences for state set S′ that contains at most K input sequences; and deciding whether there is a single input sequence that defines invertible sequences that take state set S″ to state set S′. We prove that the first two problems are NP-complete and the third is PSPACE-complete. These results imply that we should investigate heuristics for these problems. © Springer International Publishing AG 2017.

Träfflista för sökning "id:"swepub:oai:DiVA.org:oru-90921" "