Tensor Train Toolbox in Python
Tensor Train Toolbox
This is a pure python library that handles Tensor Train decomposition of tensors. This library. The module contains two main classes Tensor, and TensorTrain. Both of these inherit from an abstract base class BaseTensor that provides a common API.
Author: Tim Molteno email@example.com. Elec Research Group, Department of Physics. University of Otago.
The Tensor Class
This class is a wrapper around a numpy ndarray.
The TensorTrain Class
This class is a Tensor Train Decomposition of a tensor (see reference )/ The magic property of these decompositions is that their storage requirements and their computation requirements to not scale exponentially with the tensor dimension N. Thus for high-dimensional or very find grids, TensorTrain decompositions of tensors are far more efficient.
The tradeoff is accuracy. Creating a TT representation of a tensor does not preserve perfect accruacy for high rank tensors.
Will have a class Heirarchy so that Tensors are a class, and TensorTrain is a subclass.
 I. V. Oseledets. "Tensor-Train Decomposition" SIAM J. Sci. Comput., 33(5), 2295–2317. https://doi.org/10.1137/090752286
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