MappedTensor

代码说明：

  Manages very large tensors of arbitrary dimensions as mapped files on disk. (This class transparently maps large tensors of arbitrary dimensions to temporary files on disk. Referencing is identical to a standard matlab tensor, so a MappedTensor can be passed into functions without requiring that the function be written specifically to use MappedTensors. This is opposed to memmapfile objects, which cannot be used in such a way. MappedTensor also offers support for basic operations such as permute, without requiring space for the tensor to be allocated. An existing binary file can also be mapped, similarly to memmapfile. However, memmapfile offers more flexibility in terms of file format. )