cotengra.presets
#
Preset configured optimizers.
Module Contents#
Classes#
An optimizer that automatically chooses between optimal and |
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An optimizer that automatically chooses between optimal and |
Functions#
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Provides a very rough estimate of how long it would take to find the |
Attributes#
- cotengra.presets.estimate_optimal_hardness(inputs)[source]#
Provides a very rough estimate of how long it would take to find the optimal contraction order for a given set of inputs. The runtime is very approximately exponential in this number:
\[T \propto \exp {n^2 * k^0.5}\]Where \(n\) is the number of tensors and \(k\) is the average degree of the hypergraph.
- class cotengra.presets.AutoOptimizer(optimal_cutoff=250, minimize='combo', cache=True, **hyperoptimizer_kwargs)[source]#
Bases:
cotengra.oe.PathOptimizer
An optimizer that automatically chooses between optimal and hyper-optimization, designed for everyday use.
- class cotengra.presets.AutoHQOptimizer(**kwargs)[source]#
Bases:
AutoOptimizer
An optimizer that automatically chooses between optimal and hyper-optimization, designed for everyday use on harder contractions or those that will be repeated many times, and thus warrant a more extensive search.
- cotengra.presets.auto_optimize#
- cotengra.presets.auto_hq_optimize#
- cotengra.presets.greedy_optimize#
- cotengra.presets.optimal_optimize#
- cotengra.presets.optimal_outer_optimize#