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Refactor Unigram L1 sparse pruning and Post-Lasso debiased refit - #1295

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taku910 merged 5 commits into
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l1_sparse
Jul 31, 2026
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Refactor Unigram L1 sparse pruning and Post-Lasso debiased refit#1295
taku910 merged 5 commits into
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l1_sparse

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@taku910 taku910 commented Jul 27, 2026

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Added L1 sparse pruning-based Unigram training

taku910 added 4 commits July 30, 2026 08:21
…nization

- Support power length weighting (freq * len^beta) via --seed_piece_length_power (default 1.0f) for initial seed candidate scoring.
- Support Zipf law dynamic minimum frequency cutoff via --min_freq_alpha (default 0.0f).
- Add libsais OpenMP parallel suffix array / LCP candidate extraction.
- Enhance spm_eval_main with Bytes/Tok, Model PPL, Empirical PPL, and Coverage metrics.
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taku910 merged commit 4631531 into master Jul 31, 2026
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taku910 deleted the l1_sparse branch August 14, 2026 05:34
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