Description
The xerus library is a general purpose library for numerical calculations with higher order tensors, Tensor-Train Decompositions / Matrix Product States and other Tensor Networks.
The focus of development was the simple usability and adaptibility to any setting that requires higher order tensors or decompositions thereof.
For tutorials and a documentation see the documentation.
The source code is licenced under the AGPL v3.0. For more details see the LICENSE file.
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* Code Quality Rankings and insights are calculated and provided by Lumnify.
They vary from L1 to L5 with "L5" being the highest.
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README
About
The xerus library is a general purpose library for numerical calculations with higher order tensors, Tensor-Train Decompositions / Matrix Product States and other Tensor Networks.
The focus of development was the simple usability and adaptibility to any setting that requires higher order tensors or decompositions thereof.
For tutorials and a documentation see the documentation.
The source code is licenced under the AGPL v3.0. For more details see the LICENSE file.
Features
- Intuitive notation for expressions involving tensors of arbitrary degree:
A(i,j) = B(i,k,l) * C(k,j,l); - Lazy evaluation of tensor expressions with automatically optimized contraction orders.
- Full implementation of all common functionality of the Tensor Train (or Matrix Product State) decompositions with either dense or sparse component tensors.
- Implementations of common algorithms like the ALS, (multi-site-)DMRG, ASD, AFD, CG, and some less common ones e.g. to find the maximal entries in a Tensor Train.
Building the Xerus library
Copy the default configuration and modify it for your needs
cp config.mk.default config.mk
nano config.mk
Test whether everything works correctly with
make test -j4
build (and optionally install) the library with
make all -j4
sudo make install
and you should be ready to use the library. For more details see the "Building Xerus" page in the documentation.
Issues
Should you have any problems with the library do not hesitate to contact us at contact[at]libxerus.org or describe your problem in the issuetracker.
*Note that all licence references and agreements mentioned in the Xerus README section above
are relevant to that project's source code only.