默认参数与方法不一样吧
    *

      UseParallel — Set to 'always' to compute in parallel. Default is 'never'.
    *

      UseSubstreams — Set to 'always' to compute in parallel in a reproducible fashion. Default is 'never'. To compute reproducibly, set Streams to a type allowing substreams: 'mlfg6331_64' or 'mrg32k3a'.
    *

      Streams — A RandStream object or cell array consisting of one such object. If you do not specify Streams, plsregress uses the default stream.

谢谢！PLS情况有点复杂！采用不同软件，如SIMCA等，做出来的，彼此之间差别也是很大。