我想用AMPL学生版。此外,我还应用它的IDE进行数学建模,但当我打开它时,它会弹出一个显示以下信息的框。A valid AMPL license file could not be found for this machine.For assistance, copy this entire message and send it to licensing@ampl.com.Details: License file ampl.lic not found anywhere in $PATH.
我能做些什么来解决这个问题?
你好,各位乐观主义者!#The supply at node i equals what was present at the last time period + any new supply and subtracted by what has been extracted from the node. l[i,t-1,c] + splus[i,t] - sum{j in J, v in V, a in A} x[i,j,v,t,c,a]=
我打算进行一个优化,但我得到了一个错误,我找不到原因。编译器抱怨服务时间、启动限制和结束限制没有无效。特别是,编译器在约束TimeConstraint中抱怨服务时间‘’ORIGINS‘没有值。subject to TimeConstraint {k in H}: sum{i in UNI, j in UNI} servicetime[i]*x[i,j,k] <= 1440; set ORIGINS;set UNI;var x{UNI,UNI
我使用的是windows10,我下载了ampl包。当我运行amplide.exe文件时,我得到了这个错误:
The IDE cannot find the AMPL executable.For assistance, copy this entire message and send it to licensing@ampl.com.