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Remove duplicated code; fix stack CSSR history loss (3/5) - #19
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…amples; fix stack CSSR history loss - generators/matrices.py is the one home for symbol-labeled joint matrices, stationary/limit laws, and start vectors (model vs stationary policy); shared word enumeration and entropy helpers; StochasticModel.reverse flattened. - CSSR family: shared suffix scan (_suffix_counts.py) and significance tests (_morph_tests.py) for process CSSR, transCSSR, and stack CSSR; dead helpers (_cssr_homogenize and others) removed. The two G-tests were already identical (scipy applies the same Yates correction); now documented. - Automata: one run_nfa, one bounded equivalence-oracle base, shared word iteration, removed intersect/concatenate/star aliases, VPA membership simulates the normalized form used by the constructions. - Viz: TikZ labels reuse the shared edge spec and probability formatter; fixes uncompilable \midcall / \uparrowA, escaped \times, and escaped sympy LaTeX. - Examples: nine duplicate process pairs now share one implementation; one stationary helper; same-name/different-process pairs cross-referenced. - Stack CSSR: determinization replaced a split state with its largest bucket, dropping histories that never emitted the splitting symbol (stale mappings and zero-mass states that crashed validation); they now stay, and states with no edge into the kept set are pruned. Co-authored-by: Cursor <cursoragent@cursor.com>
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Superseded by #22, which contains the same commits as a single PR. |
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Stacked on #18.
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