我查了这个warning,大家貌似也有遇到这个问题,但是大家没有说结果可信不可信的问题。
下面我跑模型时出现的waring:
Warning messages:
1: In optwrap(optimizer, devfun, getStart(start, rho$lower, rho$pp), :
convergence code 1 from bobyqa: bobyqa -- maximum number of function evaluations exceeded
2: In checkConv(attr(opt, "derivs"), opt$par, ctrl = control$checkConv, :
unable to evaluate scaled gradient
3: In checkConv(attr(opt, "derivs"), opt$par, ctrl = control$checkConv, :
Model failed to converge: degenerate Hessian with 2 negative eigenvalues