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Ayrıntılı Bilimsel Program ve Bildiri Özetleri - YAEM2010

Ayrıntılı Bilimsel Program ve Bildiri Özetleri - YAEM2010

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YAEM 2010<br />

YÖNEYLEM ARAÞTIRMASI VE ENDÜSTRÝ MÜHENDÝSLÝGI 30. ULUSAL KONGRESÝ<br />

A Discrete Artificial Bee Colony Algorithm for the Generalized<br />

Tra<strong>ve</strong>ling Salesman Problem<br />

1 2 3<br />

Mehmet Fatih Tasgetiren , P. N Suganthan , Quan Ke Pan , Ece<br />

1<br />

Ulusans<br />

1 Yasar Uni<strong>ve</strong>rsity, Ýzmir, Turkey<br />

2 Nanyang Technological Uni<strong>ve</strong>rsity, Singapore<br />

3 Liaocheng Uni<strong>ve</strong>rsity, Liaocheng, China<br />

This paper presents a discrete artificial bee colony algorithm for the<br />

generalized tra<strong>ve</strong>ling salesman problem where the set of nodes is<br />

divided into clusters so that the objecti<strong>ve</strong> is to find a tour with<br />

minimum cost passing through exactly one node from each cluster. In<br />

order to test the performance of the algorithm, 41 problem instances<br />

from the GTSP library are used. Through the experimental analysis of<br />

results, the performance of discrete artificial bee algorithm is<br />

compared against the best performing algorithms from the literature.<br />

Placing Regenerators in Optical Networks to Satisfy Multiple<br />

Sets of Requests<br />

1 2 3 2<br />

George B. Mertzios , Ignasi Sau , Mordechai Shalom , Shmuel Zaks<br />

1 Department of Computer Science, RWTH Aachen Uni<strong>ve</strong>rsity, Aachen,<br />

Germany<br />

2 Department of Computer Science, Technion, Haifa, Israel<br />

3 TelHai Academic College, Upper Gallilee, Israel<br />

The placement of regenerators in optical networks has become an<br />

acti<strong>ve</strong> area of research during last years. Gi<strong>ve</strong>n a set of lightpaths in a<br />

network G and an integer d, regenerators must be placed in such a<br />

way that in any lightpath there are at most d hops without a<br />

regenerator. Most of the previous research has focused on heuristics.<br />

A theoretical study has been recently provided, where the considered<br />

cost function is the number of locations in the network hosting<br />

regenerators. A more accurate estimation of the real cost of the<br />

network is the total number of regenerators placed at the nodes, and<br />

this is the cost function we consider.<br />

1194

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