fullseye

graph_swap_symmetry — GRAPH symmetry op

• データ種: matrix → table
• 呼び出し: import fullseye as fs; fs.ledger.graph_swap_symmetry(adj, pairs) (実装を直接呼ぶなら import graphinv; graphinv.graph_swap_symmetry(adj, pairs)、台帳から引くなら opsgraph.get("graph_swap_symmetry"))

使い方

How much of the wiring survives exchanging node pairs (a left/right test).

pairs is a sequence of (i, j) index pairs to exchange (each node in at most one pair). The wiring is re-indexed by the exchange and compared with the original: jaccard = |E ∩ E'| / |E ∪ E'| over directed edges (self-loops removed). Returns a dict with jaccard, shared, union, edges, and n_pairs.

Identities: the identity pairing (or an empty pairs) gives exactly 1.0; applying the exchange twice recovers the original matrix exactly. For the C. elegans hermaphrodite chemical connectome with its 98 named left/right pairs the measured value is 0.470 — half the wiring is not mirrored.

Raises ValueError: as :func:graph_degree_summary; an index out of range; a node appearing in two pairs; a pair of a node with itself.

参考(サンプルデータ・文献)

• サンプルデータ カタログ(DL URL / ライセンス) — 2-D は skimage.data(BSD/public)+ 合成、3-D は実データ源(Stanford/PDS 等)の DL URL。
• 演算子の来歴・参考文献 — この op 族の元になった研究/手法の出典。
• アルゴリズムの正典(著者・年)と用途は上記ファミリ使い方ガイドに記載。

実行できる例(この op を実際に呼ぶ検証済みサンプル)

• graphinv_three_phyla — py -3.11 examples/graphinv_three_phyla.py
• poc_connectome_lr_symmetry — py -3.11 examples/poc_connectome_lr_symmetry.py

型が繋がる次の op(table を入力に取れる)

graph_edge_consensus · graph_core_persistence · tree_morphometry · tree_sholl · tree_run_length

同カテゴリ(symmetry)

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Provenance: graphinv.py — GRAPH operator registry. この per-op ノートは tools/opdocs.py md が自動生成(手編集しない)。

© 2026 Kazufumi Furuse — Fullseye operator documentation. Licensed under Apache-2.0.

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