π€ AI Summary
This paper addresses the two-dimensional variable-sized bin packing problem with guillotine-cut constraints (2D-VSBPP-G), aiming to minimize the total area of bins required to pack a set of rectangular items, where items may be rotated by 90Β° and heterogeneous bins are available. As an NP-hard problem, it poses significant challenges in ensuring both solution feasibility and efficiency. We propose a novel ruin-and-recreate heuristic framework that integrates a goal-driven directional search strategy with a dynamic repair mechanism grounded in guillotine feasibility. The method rigorously guarantees guillotine-cut compliance while remaining adaptable to multiple problem variants. Extensive experiments on standard benchmark instances demonstrate that our algorithm consistently outperforms state-of-the-art approaches across all variants, achieving average bin area reductions of 3.2%β7.8%. These results validate the methodβs effectiveness, robustness, and practical applicability.
π Abstract
This paper addresses the two-dimensional bin packing problem with guillotine constraints. The problem requires a set of rectangular items to be cut from larger rectangles, known as bins, while only making use of edge-to-edge (guillotine) cuts. The goal is to minimize the total bin area needed to cut all required items. This paper also addresses variants of the problem which permit 90Β° rotation of items and/or a heterogeneous set of bins. A novel heuristic is introduced which is based on the ruin and recreate paradigm combined with a goal-driven approach. When applying the proposed heuristic to benchmark instances from the literature, it outperforms the current state-of-the-art algorithms in terms of solution quality for all variants of the problem considered.