Sequence Based Heuristics for Two-Dimensional Bin Packing Problems Filipe Pereira Alvelos, T

Sequence Based Heuristics for Two-Dimensional Bin Packing Problems Filipe Pereira Alvelos, T

Sequence based heuristics for two-dimensional bin packing problems Filipe Pereira Alvelos, T. M. Chan, Paulo Vilaça, Tiago Gomes, Elsa Silva, José Manuel Valério de Carvalho To cite this version: Filipe Pereira Alvelos, T. M. Chan, Paulo Vilaça, Tiago Gomes, Elsa Silva, et al.. Sequence based heuristics for two-dimensional bin packing problems. Engineering Optimization, Taylor & Francis, 2009, 41 (08), pp.773-791. 10.1080/03052150902835960. hal-00545363 HAL Id: hal-00545363 https://hal.archives-ouvertes.fr/hal-00545363 Submitted on 10 Dec 2010 HAL is a multi-disciplinary open access L’archive ouverte pluridisciplinaire HAL, est archive for the deposit and dissemination of sci- destinée au dépôt et à la diffusion de documents entific research documents, whether they are pub- scientifiques de niveau recherche, publiés ou non, lished or not. The documents may come from émanant des établissements d’enseignement et de teaching and research institutions in France or recherche français ou étrangers, des laboratoires abroad, or from public or private research centers. publics ou privés. Engineering Optimization For Peer Review Only Sequence based heuristics for two-dimensional bin packing problems Journal: Engineering Optimization Manuscript ID: GENO-2008-0224.R3 Manuscript Type: Original Article Date Submitted by the 12-Feb-2009 Author: Complete List of Authors: Alvelos, Filipe; Universidade do Minho, Production and Systems; University of Minho, Algoritmi Research Center Chan, T. M.; University of Minho, Algoritmi Research Center Vilaça, Paulo; University of Minho, Algoritmi Research Center Gomes, Tiago; University of Minho, Algoritmi Research Center Silva, Elsa; University of Minho, Algoritmi Research Center Valério de Carvalho, José Manuel; Universidade do Minho, Production and Systems; University of Minho, Algoritmi Research Center Cutting and packing, 2D rectangular SBSBPP with guillotine Keywords: constraints, local search, greedy heuristics, VND URL: http:/mc.manuscriptcentral.com/geno Email: [email protected] Page 1 of 55 Engineering Optimization 1 2 Sequence based heuristics for two-dimensional bin packing problems Deleted: Sequence based heuristics 3 ab* b b b b for two-dimensional bin packing Filipe Alvelos , T. M. Chan , Paulo Vilaça , Tiago Gomes , Elsa Silva and J. problems ¶ 4 ab This paper addresses several variants of 5 M. Valério de Carvalho the two-dimensional bin packing a Department of Production and Systems, University of Minho, Braga, Portugal problem. In the most¶ 6 b basic version of the problem it is intended 7 Algoritmi Research Center, University of Minho, Braga, Portugal to pack a given number of rectangular items with given sizes in rectangular bins 8 in such a way that the number of bins 9 This article addresses several variants of the two-dimensional bin packing problem. In the most used is minimized.¶ basic version of the problem it is intended to pack a given number of rectangular items with given Different heuristic approaches (greedy, 10 sizes in rectangular bins in such a way that the number of bins used is minimized. local search, and variable neighborhood 11 descent) are proposed for solving four Different heuristic approaches (greedy, local search, and variable neighborhood descent) are guillotine two-dimensional bin packing 12 proposed for solving four guillotine two-dimensional bin packing problems. The heuristics are problems. The heuristics are based on the 13 based on the definition of a packing sequence for items and in a set of criteria for packing one item definition of a packing sequence for items in a current partial solution. Several extensions are introduced to deal with issues pointed out by and in a set of criteria for packing one 14 item in a current partial solution. Several two furniture companies.For Peer Review Only 15 extensions are introduced to deal with Extensive computational results on instances from the literature and from the two furniture issues pointed out by two furniture 16 companies are reported and compared with optimal solutions, solutions from other five companies. ¶ (meta)heuristics and, for a small set of instances, with the ones used in the companies. Extensive computational results on 17 instances from the literature and from the 18 two furniture companies are reported and compared with optimal solutions, 19 solutions from other five (meta)heuristics 20 and, for a small set of instances, with the 21 ones used in the companies.¶ Keywords : Cutting and packing; guillotine constraints; greedy heuristics; local search; variable ¶ 22 neighbourhood descent Keywords : Cutting and packing; 2D rectangular SBSBPP with guillotine 23 constraints; greedy heuristics; local search; VND ¶ 24 Page Break 25 26 Deleted: paper 27 Deleted: 2D rectangular SBSBPP wit h 28 Deleted: VND ¶ 29 30 31 32 33 34 35 36 37 38 _____________________ 39 *Corresponding author. Email: [email protected]. Department of Production and 40 Systems, University of Minho, 4710-057 Braga, Portugal. Tel. +351253604751. Fax: 41 +351253604741. 42 43 44 45 46 47 48 49 50 1 51 52 53 54 55 56 57 58 59 60 URL: http:/mc.manuscriptcentral.com/geno Email: [email protected] Engineering Optimization Page 2 of 55 1 2 3 1. Introduction 4 Deleted: paper 5 In this article , two-dimensional bin packing problems, where an unlimited number of 6 Deleted: with 7 rectangular bins (all of the same size) are available to pack a given number of rectangular Deleted: s 8 9 small items, are addressed. The objective is to pack all the items in such a way that the number 10 11 of bins used is as small as possible. The practical application that has motivated this work is 12 13 wood cutting in small- and medium-sized furniture companies. In this application, the large 14 For Peer Review Only 15 wood plates and the wood pieces resulting from the cutting operations correspond to the bins 16 Deleted: used 17 and to the items, respectively. The objective of minimizing the number of bins used is 18 19 equivalent to the minimization of the wood waste produced in the cutting process. Note that, 20 Deleted: et al 21 conceptually, cutting and packing are equivalent. However, it is usual (Wäscher et al . 2007) to 22 23 distinguish between bin packing problems and cutting stock problems, depending on whether 24 25 there are few equal items (bin packing problems) or many equal items (cutting stock 26 27 problems). 28 Deleted: et al 29 According to the typology of Wäscher et al . (2007), the problem addressed is a two- 30 31 dimensional rectangular Single Bin Size Bin Packing Problem (SBSBPP) with additional 32 Deleted: paper 33 constraints which are described next. In the specific problems addressed in this article , it is 34 35 imposed by the wood cutting process itself that only orthogonal (parallel to one edge of the 36 37 plate) and guillotine (from one edge of the plate to the opposite one) cuts are allowed. 38 39 Furthermore, the number of stages is limited to two or three. A stage is a set of cuts with the 40 41 same orientation that, conceptually, can be executed at the same time. In a staged problem, the 42 43 orientation of the cuts in consecutive stages alternates between horizontal and vertical. 44 45 Assuming the first set of cuts is horizontal, feasible two-stage and three-stage packings for a 46 47 single bin are depicted in Figure 1 and Figure 2, respectively. In both cases two horizontal cuts 48 49 50 2 51 52 53 54 55 56 57 58 59 60 URL: http:/mc.manuscriptcentral.com/geno Email: [email protected] Page 3 of 55 Engineering Optimization 1 2 are executed in the first stage, dividing the bin in three shelves: the bottom one with items 1, 2, 3 4 and 3; the middle one with items 4 and 5; and the top one with waste. In the second stage, 5 6 vertical cuts are executed in each shelf. For the two-stage problem, three vertical cuts are 7 8 executed to obtain items 1, 2, and 3 (bottom shelf) and two vertical cuts are needed to obtain 9 10 items 4 and 5 (middle shelf). For the three-stage problem, the bottom shelf is made of two 11 12 stacks (set of items packed on the top of each other): one stack with item 1 and one stack with 13 14 items 2 and 3. In thisFor case, the twoPeer stacks are sep aratedReview by vertical cuts in stage Only two, and items 15 16 2 and 3 are obtained by using two horizontal cuts in stage three. 17 18 In the examples, for the two-stage problem, items in the same shelf have the same 19 20 height and, for the three-stage problem, items in the same stack have the same width. When 21 22 this happens, the problem is without trimming. If those conditions are not fulfilled, additional 23 Deleted: i.e. 24 cuts (with the opposite orientation relative to the last stage, i.e. , horizontal for two-stage 25 26 problems and vertical for three-stage problems) may be required to separate items from waste. 27 28 If this additional set of cuts is allowed, the problem is said to have trimming. Examples of 29 30 feasible packings are given in Figure 3 and Figure 4 for two and three-stage problems with 31 32 trimming, respectively. 33 34 35 Figure 1 here 36 Figure 2 here 37 Figure 3 here 38 Figure 4 here 39 40 41 42 43 44 45 46 47 48 49 50 3 51 52 53 54 55 56 57 58 59 60 URL: http:/mc.manuscriptcentral.com/geno Email: [email protected] Engineering Optimization Page 4 of 55 1 2 3 In summary, four versions of the problem are considered: two-stage without trimming, 4 5 two-stage with trimming, three-stage without trimming, and three-stage with trimming.

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