One-dimensional heuristics adapted for two-dimensional rectangular strip packing
نویسندگان
چکیده
We consider two-dimensional rectangular strip packing without rotation of items and without the guillotine cutting constraint. We propose a single-pass heuristic which fills every free space in a onedimensional knapsack fashion, i.e. considering only item widths. It appears especially important to assign suitable heuristic “pseudo-values” as profits in this knapsack problem. This simple heuristic improves the results for most of the test classes from the literature, compared to the results of Bortfeldt (2004) and Lesh and Mitzenmacher (2004). Moreover, we describe a simple modification of the Bottom-Left heuristic and call it Bottom-Left-Right. Executing it iteratively with different input sequences generated by the randomized framework BubbleSearch of Lesh and Mitzenmacher (2004), we obtain the best results in some classes with smaller number of items (20, 40). For larger instances, the pseudo-value-based algorithm is the best one in most cases.
منابع مشابه
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ورودعنوان ژورنال:
- JORS
دوره 59 شماره
صفحات -
تاریخ انتشار 2008