TY  - JOUR
T1  - An Adaptive Switcher Mechanism of Integrated Two–Stage Multi–Neighbourhood Tabu Search for University Examination Timetabling Problems
AU - Razak Hamdan, Masri Ayob Abdul AU - Malik, Ariff Md Ab AU - Ahmad, Zulkifli 
JO  - Research Journal of Applied Sciences
VL  - 8
IS  - 3
SP  - 152
EP  - 160
PY  - 2013
DA  - 2001/08/19
SN  - 1815-932x
DO  - rjasci.2013.152.160
UR  - https://makhillpublications.co/view-article.php?doi=rjasci.2013.152.160
KW  - Metaheuristics
KW  -Tabu search
KW  -intensifaction
KW  -diversification
KW  -search strategies
AB  - The method of focusing only on intensification or diversification 
  within a Tabu Search algorithm may jeopardize the possibility in finding better 
  quality of solutions. Thus, the decision to switch between intensification and 
  diversification during solving process may enhance the overall performance of 
  the search. This research proposes an adaptive switcher mechanism in Integrated 
  Two-stage Multi-neighbourhood Tabu Search (ITMTS) to decide when to switch from 
  intensification to diversification. The trigger value is calculated from the 
  mean plus the standard deviation of the qualities of some recently accepted 
  solutions. When the search consecutively generates bad (or same) quality solutions, 
  it will automatically switch from intensification to diversification. The search 
  will switch back to intensification phase after performing the shaking process. 
  The technique is tested on examination timetabling datasets and demonstrates 
  the effectiveness of adaptive switcher mechanism.
ER  -