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Optimizing parcel exchange among landowners: A soft alternative to land consolidation

机译：优化土地所有者之间的包裹交换：陆地整合的软替代品

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摘要

For decades, public policy has favored the use of land consolidation to reduce the fragmentation of land ownership. Private actors, on the other hand, have focused on the purchase, rental and exchange of land plots. Plot exchange can be very useful in the restructuring of holdings, particularly when a large number of owners participate; however, the number of possible exchange combinations grows very quickly with the number of participating landowners and parcels. Finding an acceptable exchange solution can easily become challenging. In this paper we evaluate the practical use of a support system for land exchange processes. The system is based on the use of genetic algorithms, a particular kind of heuristics that loosely replicate the rules of evolution and natural selection. We assess the influence of the geometric distribution of parcels in the quality of the solution, as well as usefulness and performance of the system, via parallelization techniques. The proposed algorithm (GAPE, Genetic Algorithm for Parcel Exchange) is tested with regards to several parameters, from several alternatives for certain steps of the algorithm to the resource distribution for the parallelizations implemented. We tested the algorithm in 6 different real and representative test cases, and provide results with different metrics. With the positive results obtained, we argue that land exchange is a process worth considering for private actors, and that genetic algorithms can be used to propose fair exchanges, even in complex scenarios, shortening in a meaningful way the time usually required to perform administrative procedures associated to land fragmentation problems.
机译：几十年来，公共政策赞成利用土地合并来减少土地所有权的碎片。另一方面，私人行为者专注于购买，租赁和陆地图交换。情节交换在持有的重组方面非常有用，特别是当大量业主参与时;然而，可能的交换组合的数量很快地增长了参与的土地所有者和包裹的数量。找到可接受的交换解决方案很容易变得具有挑战性。在本文中，我们评估了对土地交换过程的支持系统的实际应用。该系统基于遗传算法的使用，一种松散地复制进化和自然选择规则的特定类型的启发式。我们评估包裹的几何分布在解决方案质量中的影响，以及系统的有用性和性能，通过并行化技术。在若干参数中，从若干参数测试了所提出的算法（GAPE，包裹交换遗传算法），从算法的某些步骤到实现的并行化的资源分布。我们在6个不同的真实和代表性测试用例中测试了该算法，并提供了不同的指标结果。通过获得的积极成果，我们认为土地交易所是一个值得考虑的私人行为者的过程，并且遗传算法可用于提出公平的交流，即使在复杂的场景中，以有意义的方式缩短了执行行政程序的时间缩短与土地碎片问题相关。

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