stats opmatrix → matriximport fullseye as fs; fs.ledger.stat_correlation(x) (実装を直接呼ぶなら import mathops; mathops.stat_correlation(x)、台帳から引くなら opsmath.get("stat_correlation"))Pearson correlation matrix of (N, D) observations → (D, D).
Same orientation as :func:stat_covariance (rows = observations).
Entries are clipped to [-1, 1] (floating-point can overshoot by an
ulp), the diagonal is exactly 1 and the matrix exactly symmetric by
construction.
A constant column raises ValueError (naming the column) instead of
yielding NaN: correlation with a zero-variance variable is mathematically
undefined (0/0), and a NaN that surfaces three ops downstream is the
classic zero-division bug family this module fails closed against. Drop or
perturb the constant column deliberately if that is what you mean.
HALCON: no public tuple operator (see :func:stat_covariance).
mathops の全 op は入力を検証してから計算する(黙って通さない):
ValueError — float64 への強制変換は虚部を黙って捨てる(numpy は ComplexWarning だけ出して「もっともらしく間違った」実数を返す)。.real/.imag/abs() を明示するか、複素対応の complexops を使う。ValueError — マスクを剥がして下の生値を使う暗黙変換を拒否。埋める/落とすを明示する。ValueError(件数を明示して拒否 — 結果全体に伝播するため)。ValueError。reshape を明示する)。stat_histogram の bins は mathops.MAX_ELEMENTS(2^26 ≈ 6700 万要素)超で ValueError。py -3.11 examples/math_metrology.pypy -3.11 examples/poc_colocalization_crosstalk.pypy -3.11 examples/poc_ct_fidelity.pypy -3.11 examples/poc_machine_condition_fusion.pypy -3.11 examples/poc_thermal_radiometry.pymatrix を入力に取れる)mat_solve · mat_lstsq · mat_svd · mat_eigh · mat_pinv · mat_cond · stat_covariance
stats)stat_describe · stat_histogram · stat_covariance · stat_zscore
Provenance: mathops.py — MATH 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.