--%>

Difference among Property-specific and Structural heuristic

The key difference between a property-specific heuristic and a structural heuristic can be seen in the dining philosophers’ example where we search for the well-known deadlock scenario. When increasing the number of philosophers high enough it becomes impossible for an explicit-state model checker to try all the possible combinations of actions to get to the deadlock, and heuristics (or luck) are required. A property-specific heuristic applicable here is to try and maximize the number of blocked threads, since if all threads are blocked we have a deadlock (most-blocked heuristic). Whereas a structural heuristic may be to observe that we are dealing here with a highly concurrent program—hence it may be argued that any error in it may well be related to an unexpected interleaving —we use the heuristic to favor increased interleaving during the search (interleaving heuristic). Although experimental results are by no means conclusive, it is still worth noting that for the dining philosophers’ example the structural heuristic performs much better than the property-specific heuristic. Another interesting observation is that turning the state storage off with the interleaving heuristic mentioned above for both the dining philosophers’ example and the Remote Agent example does not seem to change the results significantly—we found only minor variations in the length of counterexamples and number of states searched. In contrast, turning the state storage off for the most-blocked heuristic seems to cause previously successful searches to become unsuccessful.

   Related Questions in Science

  • Q : Disassociate State of plexes Normal 0

    Normal 0 false false

  • Q : NFS and its job Normal 0 false false

    Normal 0 false false

  • Q : Explain handle Normal 0 false false

    Normal 0 false false

  • Q : Memory leaks Normal 0 false false false

    Normal 0 false false

  • Q : FIFO in an UNIX OS What is FIFO in an

    What is FIFO in an UNIX OS?

  • Q : Causes affecting population size What

    What are the causes affecting population size and also describe population stabilization?

  • Q : SYSVOL folder Normal 0 false false

    Normal 0 false false

  • Q : Command to display Ethernet Address arp

    Normal 0 false false

  • Q : Bearer types for WAP What bearer types

    What bearer types are utilized for WAP in GSM? In GSM, WAP can be run over the Short Message Service (SMS) or by means of Circuit Switched Data (CSD). The latter provides much greater bandwidth.   

  • Q : Type of Page replacement algorithms

    Distinguished different type of Page replacement algorithms?

    Discover Q & A

    Leading Solution Library
    Avail More Than 1439769 Solved problems, classrooms assignments, textbook's solutions, for quick Downloads
    No hassle, Instant Access
    Start Discovering

    18,76,764

    1938145
    Asked

    3,689

    Active Tutors

    1439769

    Questions
    Answered

    Start Excelling in your courses, Ask an Expert and get answers for your homework and assignments!!

    Submit Assignment

    ©TutorsGlobe All rights reserved 2022-2023.