TY - GEN
T1 - Dynamic ordering for asynchronous backtracking on DisCSPs
AU - Zivan, Roie
AU - Meisels, Amnon
PY - 2005/12/1
Y1 - 2005/12/1
N2 - An algorithm that performs asynchronous backtracking on distributed CSPs, with dynamic ordering of agents is proposed, ABT-DO. Agents propose reorderings of lower priority agents and send these proposals whenever they send assignment messages. Changes of ordering triggers a different computation of Nogoods. The dynamic ordered asynchronous backtracking algorithm uses polynomial space, similarly to standard ABT. The ABT_DO algorithm with three different ordering heuristics is compared to standard ABT on randomly generated DisCSPs. A Nogood-triggered heuristic, inspired by dynamic backtracking, is found to outperform static order ABT by a large factor in run-time and improve the network load.
AB - An algorithm that performs asynchronous backtracking on distributed CSPs, with dynamic ordering of agents is proposed, ABT-DO. Agents propose reorderings of lower priority agents and send these proposals whenever they send assignment messages. Changes of ordering triggers a different computation of Nogoods. The dynamic ordered asynchronous backtracking algorithm uses polynomial space, similarly to standard ABT. The ABT_DO algorithm with three different ordering heuristics is compared to standard ABT on randomly generated DisCSPs. A Nogood-triggered heuristic, inspired by dynamic backtracking, is found to outperform static order ABT by a large factor in run-time and improve the network load.
UR - http://www.scopus.com/inward/record.url?scp=33646183942&partnerID=8YFLogxK
U2 - 10.1007/11564751_6
DO - 10.1007/11564751_6
M3 - Conference contribution
AN - SCOPUS:33646183942
SN - 3540292381
SN - 9783540292388
T3 - Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
SP - 32
EP - 46
BT - Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
T2 - 11th International Conference on Principles and Practice of Constraint Programming - CP 2005
Y2 - 1 October 2005 through 5 October 2005
ER -