Un algoritmo Beam Search para el problema de premarshalling con tiempos de grúa
C. Parreño-Torres, R. Alvarez-Valdes, F. Parreño Torres
El problema de premarshalling CPMP consiste en recolocar los contenedores ubicados en una bahía del patio de una terminal de contenedores en el orden en que serán requeridos posteriormente. En este trabajo, estudiamos el CPMP con el objetivo de minimizar el tiempo total empleado por la grúa CPMPCT. Presentamos un algoritmo beam search adaptado a las particularidades del problema. En la fase de evaluación local, se proponen varios criterios de evaluación, en función del tipo de movimiento del contenedor; en la de evaluación global, se propone un nuevo algoritmo heurístico y una búsqueda local; por último, se proponen varias reglas de dominancia que permiten reducir el espacio de soluciones. Un extenso estudio computacional muestra que nuestro algoritmo alcanza el óptimo en las instancias óptimamente resueltas en la literatura, mejora las soluciones de las instancias en las que no se conocía el óptimo, pero sí una solución, y obtiene solución en las que no se conocía ninguna solución.
Keywords: Logística, recolocación, beam search, transporte marítimo
Scheduled
GT09 Heuristics I. Heuristics and metaheuristics
June 8, 2022 4:00 PM
A04
Other papers in the same session
A. Duarte, S. Cavero, E. García Pardo
S. Gil Borrás, E. García Pardo, A. Duarte Muñoz, A. Alonso Ayuso, E. Jiménez Merino
E. García Pardo, S. Cavero, A. Duarte
Latest news
-
6/8/22
Visit Alhambra
Tomorrow, Thursday, we will visit the Alhambra. 1. At 7:00 p.m., buses will start leaving from the door of the Hotel Granada Center (in front of the door of the Faculty of Sciences) 2. Upon arrival, groups with guides will be organized. 3. There will be groups in English language. These groups will wait at the destination until the arrival of all buses. 4. After the visit to the Alhambra we will walk to the Carmen de los Mártires to have a cocktail. 5. On the way back, we can go back by bus, which will leave from the same place where they left us at the Alhambra. 6. Although the way to the Alhambra by bus seems long, it really is close to the city. We invite you, whoever wishes, to go down for a pleasant walk. 7. Do not forget to take your Alhambra ticket and your identity card or passport. The document must be the same whose number matches the ticket number you have.
-
5/31/22
YouTube Channel
The menu label is already on the web from where you can see the live broadcasts: inauguration, plenary sessions, round tables,... Don't forget to enter the YouTube channel and subscribe!!!!
-
5/27/22
Gala Dinner
It opens the possibility that anyone who is registered for the conference, and wants non-registered companions to attend the gala dinner, can do so by paying the price of this dinner (80 euros VAT included). This payment must be made before June 1 (inclusive). To do this, contact with [email protected]
-
5/23/22
IMPORTANT WARNING
To access the Alhambra on the visit on Thursday 9, it is obligatory to present the identification document whose reference was sent to the organization (eurocongress)
-
5/16/22
Social Events
All social events are included with the payment of the corresponding registration.
