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[NDTensors] [Enchancements] Reorganize NDTensors (#1061)
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,15 @@ | ||
| function generic_randn(DataT::Type{<:AbstractArray}, dim::Integer=0) | ||
| DataT = set_eltype_if_unspecified(DataT) | ||
| data = similar(DataT, dim) | ||
| ElT = eltype(DataT) | ||
| for i in 1:length(data) | ||
| data[i] = randn(ElT) | ||
| end | ||
| return data | ||
| end | ||
|
|
||
| function generic_zeros(DataT::Type{<:AbstractArray}, dim::Integer=0) | ||
| DataT = set_eltype_if_unspecified(DataT) | ||
| ElT = eltype(DataT) | ||
| return fill!(similar(DataT, dim), zero(ElT)) | ||
| end |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,103 @@ | ||
| function contraction_output( | ||
| ::TensorT1, ::TensorT2, indsR::Tuple | ||
| ) where {TensorT1<:CombinerTensor,TensorT2<:DenseTensor} | ||
| TensorR = contraction_output_type(TensorT1, TensorT2, indsR) | ||
| return similar(TensorR, indsR) | ||
| end | ||
|
|
||
| function contraction_output( | ||
| T1::TensorT1, T2::TensorT2, indsR | ||
| ) where {TensorT1<:DenseTensor,TensorT2<:CombinerTensor} | ||
| return contraction_output(T2, T1, indsR) | ||
| end | ||
|
|
||
| function contract!!( | ||
| output_tensor::Tensor, | ||
| output_tensor_labels, | ||
| combiner_tensor::CombinerTensor, | ||
| combiner_tensor_labels, | ||
| tensor::Tensor, | ||
| tensor_labels, | ||
| ) | ||
| if ndims(combiner_tensor) ≤ 1 | ||
| # Empty combiner, acts as multiplying by 1 | ||
| output_tensor = permutedims!!( | ||
| output_tensor, tensor, getperm(output_tensor_labels, tensor_labels) | ||
| ) | ||
| return output_tensor | ||
| end | ||
| if is_index_replacement(tensor, tensor_labels, combiner_tensor, combiner_tensor_labels) | ||
| ui = setdiff(combiner_tensor_labels, tensor_labels)[] | ||
| newind = inds(combiner_tensor)[findfirst(==(ui), combiner_tensor_labels)] | ||
| cpos1, cpos2 = intersect_positions(combiner_tensor_labels, tensor_labels) | ||
| output_tensor_storage = copy(storage(tensor)) | ||
| output_tensor_inds = setindex(inds(tensor), newind, cpos2) | ||
| return NDTensors.tensor(output_tensor_storage, output_tensor_inds) | ||
| end | ||
| is_combining_contraction = is_combining( | ||
| tensor, tensor_labels, combiner_tensor, combiner_tensor_labels | ||
| ) | ||
| if is_combining_contraction | ||
| Alabels, Blabels = tensor_labels, combiner_tensor_labels | ||
| final_labels = contract_labels(Blabels, Alabels) | ||
| final_labels_n = contract_labels(combiner_tensor_labels, tensor_labels) | ||
| output_tensor_inds = inds(output_tensor) | ||
| if final_labels != final_labels_n | ||
| perm = getperm(final_labels_n, final_labels) | ||
| output_tensor_inds = permute(inds(output_tensor), perm) | ||
| output_tensor_labels = permute(output_tensor_labels, perm) | ||
| end | ||
| cpos1, output_tensor_cpos = intersect_positions( | ||
| combiner_tensor_labels, output_tensor_labels | ||
| ) | ||
| labels_comb = deleteat(combiner_tensor_labels, cpos1) | ||
| output_tensor_vl = [output_tensor_labels...] | ||
| for (ii, li) in enumerate(labels_comb) | ||
| insert!(output_tensor_vl, output_tensor_cpos + ii, li) | ||
| end | ||
| deleteat!(output_tensor_vl, output_tensor_cpos) | ||
| labels_perm = tuple(output_tensor_vl...) | ||
| perm = getperm(labels_perm, tensor_labels) | ||
| tensorp = reshape(output_tensor, permute(inds(tensor), perm)) | ||
| permutedims!(tensorp, tensor, perm) | ||
| return reshape(tensorp, output_tensor_inds) | ||
| else # Uncombining | ||
| cpos1, cpos2 = intersect_positions(combiner_tensor_labels, tensor_labels) | ||
| output_tensor_storage = copy(storage(tensor)) | ||
| indsC = deleteat(inds(combiner_tensor), cpos1) | ||
| output_tensor_inds = insertat(inds(tensor), indsC, cpos2) | ||
| return NDTensors.tensor(output_tensor_storage, output_tensor_inds) | ||
| end | ||
| return invalid_combiner_contraction_error( | ||
| tensor, tensor_labels, combiner_tensor, combiner_tensor_labels | ||
| ) | ||
| end | ||
|
|
||
| function contract!!( | ||
| output_tensor::Tensor, | ||
| output_tensor_labels, | ||
| tensor::Tensor, | ||
| tensor_labels, | ||
| combiner_tensor::CombinerTensor, | ||
| combiner_tensor_labels, | ||
| ) | ||
| return contract!!( | ||
| output_tensor, | ||
| output_tensor_labels, | ||
| combiner_tensor, | ||
| combiner_tensor_labels, | ||
| tensor, | ||
| tensor_labels, | ||
| ) | ||
| end | ||
|
|
||
| function contract( | ||
| diag_tensor::DiagTensor, | ||
| diag_tensor_labels, | ||
| combiner_tensor::CombinerTensor, | ||
| combiner_tensor_labels, | ||
| ) | ||
| return contract( | ||
| dense(diag_tensor), diag_tensor_labels, combiner_tensor, combiner_tensor_labels | ||
| ) | ||
| end |
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