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参数个数。R


# #使用与模型相关的参数。狗万app足彩# #一个MIP是解决了几秒钟与不同的参数集。#选择MIP间隙最小的那个,然后继续优化#,直到找到最优解。args <- commandArgs(trailingOnly = TRUE) if (length(args) < 1) {stop('Usage: Rscript params. ');R filename\n')} #读取模型cat('Reading model',args[1],'…#检测非连续变量集合intvars <- which(模型vtype != 'C') numintvars <- length(intvars) if (numintvars < 1) {stop('所有模型的变量都是连续的,什么也不做\n')} #设置一个2秒的时间限制params <- list()参数现在用MIPFocus参数的不同值来解决模型MIPFocus <- 0 result <- gurobi(model, params) bestgap <- resultMipgap bestparams <- params for (i in 1:3) {paramsMIPFocus <- i result <- gurobi(model, params) if (resultMipgap < bestgap) {bestparams <- params bestgap <- resultmipgap}} #最后,重置时间限制和Re-solve模型到最优的最佳参数TimeLimit <- Inf result <- gurobi(model, bestparams) cat('Solved with MIPFocus:', bestparams . ')#清除空间rm(model, params, result, bestparams)