arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2005.12841cs.NEcs.AI
收藏

进化元分析在基于个体模型参数估计中的应用

Applying Evolutionary Metaheuristics for Parameter Estimation of Individual-Based Models

Antonio Prestes García, Alfonso Rodríguez-Patón

摘要:

基于个体的模型是复杂的,它们通常具有大量的输入参数,这些参数必须被调整以尽可能准确地再现观察到的群体数据或实验结果。因此,这种建模方法的一个弱点在于,建模者很少有关于输入参数的正确值或甚至可接受范围的足够信息。因此,必须尝试几个参数组合,以找到一组可接受的输入因子,使模拟数据集和参考数据集的偏差最小化。在实践中,大多数时候,遍历完整的搜索空间尝试所有可能的组合以找到最佳参数集在计算上是不可行的。这正是一个组合问题的例子,适合于用元分析和演化计算技术来解决。在这项工作中,我们介绍了EvoPER,一个R包简化参数估计使用演化计算方法。

英文摘要:

Individual-based models are complex and they have usually an elevated number of input parameters which must be tuned for reproducing the observed population data or the experimental results as accurately as possible. Thus, one of the weakest points of this modelling approach lies on the fact that rarely the modeler has the enough information about the correct values or even the acceptable range for the input parameters. Consequently, several parameter combinations must be tried to find an acceptable set of input factors minimizing the deviations of simulated and the reference dataset. In practice, most of times, it is computationally unfeasible to traverse the complete search space trying all every possible combination to find the best of set of parameters. That is precisely an instance of a combinatorial problem which is suitable for being solved by metaheuristics and evolutionary computation techniques. In this work, we introduce EvoPER, an R package for simplifying the parameter estimation using evolutionary computation methods.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑