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Fidelity-adaptive evolutionary optimization algorithm for 2D irregular cutting and packing problem
The cutting and packing problems (CPP) widely appear in various industrial fields, such as additive manufacturing (AM) and the fashion industry. The...
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Cutting and Packing Beyond and Within Mathematical Programming
This chapter, based on material provided and written by Prof. Dr. Yuriy Stoyan & Prof. Dr. Tatiana Romanova ( The National Academy of Sciences of...
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Bin Packing Methodologies for Capacity Planning in Freight Transportation and Logistics
Capacity planning may be defined as the process of determining the appropriate mix and quantity of resources to meet demand. We focus on...
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Smart nesting: estimating geometrical compatibility in the nesting problem using graph neural networks
Reducing material waste and computation time are primary objectives in cutting and packing problems (C &P). A solution to the C &P problem consists...
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Two-dimensional polygon classification and pairwise clustering for pairing in ship parts nesting
In the shipbuilding industry, nesting is arranging the cutting patterns of ship parts to increase the utilization rate of steel sheets and reduce the...
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A nesting optimization method based on digital contour similarity matching for additive manufacturing
Additive manufacturing (AM) technology uses the layer-by-layer stacking method to print parts, which simplifies the process of complex parts. The...
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A predictive modelling strategy for warpage and shrinkage defects in plastic injection molding using fuzzy logic and pattern search optimization
Quality control through defect minimization has been the central theme in plastic injection molding research. This study contributes to this course...
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Formal modelling of a sheet metal smart manufacturing system by using Petri nets and first-order predicate logic
This study introduces a developed method to a smart computer-aided design/manufacturing (CAD/CAM) system, where layout design, process planning, and...
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Mathematical models and heuristic algorithms for pallet building problems with practical constraints
In the pallet building problem, we aim at loading a given set of items into one or more pallets, by satisfying specific constraints and minimizing...
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Improving surface quality in selective laser melting based tool making
In the last years, Additive Manufacturing, thanks to its capability of continuous improvements in performance and cost-efficiency, was able to partly...
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Cutting and packing problems for irregular objects with continuous rotations: mathematical modelling and non-linear optimization
We further improve our methodology for solving irregular packing and cutting problems. We deal with an accurate representation of objects bounded by...
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Review of Artificial Intelligence Applications in Garment Manufacturing
Nowadays, apparel manufacturing enterprises are confronted with ever-increasing global competition and unpredictable demand fluctuations. These...
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Constraint Aggregation in Non-linear Programming Models for Nesting Problems
The Nesting problem is a complex problem that arises in industries where sets of pieces or space must be efficiently placed or allocated in order to...
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Column generation and sequential heuristic procedure for solving an irregular shape cutting stock problem
The research addressing two-dimensional (2D) irregular shape packing has largely focused on the strip packing variant of the problem. However, it can...
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An effective heuristic for the two-dimensional irregular bin packing problem
This paper proposes an adaptation, to the two-dimensional irregular bin packing problem of the Djang and Finch heuristic (DJD), originally designed...
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Hyper-heuristics
Many practical problems are awkward to solve computationally. Whether you are trying to find any solution at all, or perhaps to find a solution that...
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Hyper-heuristics: a survey of the state of the art
Hyper-heuristics comprise a set of approaches that are motivated (at least in part) by the goal of automating the design of heuristic methods to...
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Constrained order packing: comparison of heuristic approaches for a new bin packing problem
Bin packing problems consist of allocating a set of small parts to a set of large bins by minimizing the number of used bins. Although several...
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Operations
Operating an airline is an extremely complex undertaking. In order to successfully dispatch hundreds of aircraft, schedule thousands of air crew,...
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Sequential quadratic programming method with a global search strategy on the cutting-stock problem with rotatable polygons
The cutting-stock problem, which considers how to arrange the component profiles on the material without overlaps, can increase the utility rate of...