Julia和R软件在多介质动力学模型建模中的比较

Comparison of software Julia and R in modeling of multimedia dynamic models

多介质动力学模型在环境风险评估中正得到越来越多的研究和应用。为了选择合适的建模软件,通过构建不同复杂程度的EQC(平衡判据)动力学模型,使用开源软件Julia和R编写模型求解程序,对算法选择、计算效率、模型分析工具和便捷性进行比较。结果表明,在多介质动力学模型计算中,Julia的计算效率是R的至少10倍,且提供了丰富的算法和模型分析工具,对于复杂模型,建议使用Julia计算;但由于目前Julia应用的便捷性不如R,对于简单模型,建议使用R计算。化学物质性质不影响模型的运行时间。lsoda是Julia中求解多介质动力学模型的首选算法,而lsoda和bdf是R中的首选算法。

Multimedia dynamic models(MDMs)are being studied and employed increasingly in environmental risk assessment.To select proper modeling software,equilibrium criterion(EQC)dynamic models with different complexity were built by using open-source software Julia and R to write the model solving programs,and algorithm selection,computational efficiency,model analysis tools and convenience of them were compared.The results show that in MDM calculation,the computational efficiency of Julia is at least 10 times that of R,and Julia also provided plentiful algorithms and model analysis tools,so Julia was suggested for computation of complex models;however,since Julia is less convenient than R currently,R is recommended for computation of simple models.Properties of chemical substance do not affect the run time of model.The preferred algorithm in Julia for solving MDMs is lsoda,while lsoda and bdf are the preferred ones in R.