quimb.experimental.misc.misc

Miscellaneous experimental functions.

Attributes

rand_reduce_
contract_greedily_

Functions

rand_reduce(self, ind[, rand_fn, inplace])	Contract a random vector with ind, removing it from this tensor.
_compress_between_local_reflect(self, tid1, tid2[, ...])
_compute_tensor_pair_env(self, tids[, ...])	Compute the local TN around tid, maybe approximately.
_compress_between_full_gauge_tids(self, tid1, tid2[, ...])	Use the full environment to try and temporarily gauge and compress.
gauge_product_boundary_vector(self, tags[, which, ...])
_compress_between_virtual_dense_tids(self, tidl, tidr, ...)
_compress_between_virtual_duotree_tids(self, tidl, ...)
contract_greedily(self[, max_score, max_contractions, ...])
all_mode_renormalization()

Module Contents

quimb.experimental.misc.misc.rand_reduce(self, ind, rand_fn=None, inplace=False)

Contract a random vector with ind, removing it from this tensor.

Parameters:

• ind (str) – The index to contract with.

• inplace (bool, optional) – Whether to perform the reduction inplace.

Return type:

Tensor

quimb.experimental.misc.misc.rand_reduce_

quimb.experimental.misc.misc._compress_between_local_reflect(self, tid1, tid2, method='svd', absorb='both', max_bond=None, cutoff=1e-10, cutoff_mode='rel', renorm=None, max_distance=1, smudge=1e-06, power=0.5, optimize=None, info=None)

quimb.experimental.misc.misc._compute_tensor_pair_env(self, tids, select_local_distance=None, select_local_opts=None, max_bond=None, cutoff=None, contract_around_distance=1, contract_around_opts=None, include=None, exclude=None)

Compute the local TN around tid, maybe approximately.

quimb.experimental.misc.misc._compress_between_full_gauge_tids(self, tid1, tid2, max_bond=None, cutoff=0.0, absorb='both', select_local_distance=None, select_local_opts=None, env_max_bond='max_bond', env_cutoff='cutoff', contract_around_distance=1, contract_around_opts=None, env_optimize='auto-hq', env_split_opts=None, smudge=1e-12, include=None, exclude=None, **compress_opts)

Use the full environment to try and temporarily gauge and compress.

┏━━━━━━━━━━━━━━━━━━━━━━━━━━━┓ ┗━━━━━●━━━━━●━━━━━━━━U━s━VH━┛ (1) form and split the env

┊ 1 ┊ 2 ┊ ┈┈┈┈┈┈ lix bix rix env

┏━━━━━━━━━━━━━━━━━━━━━━━━━━━┓ ┗Gi━G━●━━━━━●━━G━Gi━━U━s━VH━┛ (2) gauge the tensors using split

-> <-

┏━━━━━━━━━━━━━━━━━━━━━━━━━━━┓ ┗━Gi━━○━━━━━○━━Gi━━━━U━s━VH━┛ (3) compress the gauged tensors

┏━━━━━━━━━━━━━━━━━━━━━━━━━━━┓ ┗━Gi━━○─────○━━Gi━━━━U━s━VH━┛ (4) ungauge the compressed tensors

-> <-

┏━━━━━━━━━━━━━━━━━━━━━━━━━━━┓ ┗━━━━━●─────●━━━━━━━━U━s━VH━┛

┈┈┈┈┈┈ env unchanged

quimb.experimental.misc.misc.gauge_product_boundary_vector(self, tags, which='all', max_bond=1, smudge=1e-06, canonize_distance=0, select_local_distance=None, select_local_opts=None, inplace=False, **contract_around_opts)

quimb.experimental.misc.misc._compress_between_virtual_dense_tids(self, tidl, tidr, max_bond, cutoff, r, absorb='both', include=None, exclude=None, span_opts=None, contract_opts=None, optimize='auto-hq', **compress_opts)

quimb.experimental.misc.misc._compress_between_virtual_duotree_tids(self, tidl, tidr, max_bond, cutoff, r, absorb='both', include=None, exclude=None, span_opts=None, duo_exclude='tensor', **compress_opts)

quimb.experimental.misc.misc.contract_greedily(self, max_score=0, max_contractions=float('inf'), cands=None, inplace=False)

quimb.experimental.misc.misc.contract_greedily_

quimb.experimental.misc.misc.all_mode_renormalization()