[os_stochastic.md] Update np.random → Generator API#997
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Chihiro2000GitHub wants to merge 1 commit into
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[os_stochastic.md] Update np.random → Generator API#997Chihiro2000GitHub wants to merge 1 commit into
Chihiro2000GitHub wants to merge 1 commit into
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Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01Rs2tDEcDXLnfMnM88v8e1D
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📖 Netlify Preview Ready!Preview URL: https://pr-997--sunny-cactus-210e3e.netlify.app Commit: 📚 Changed LecturesBuild Info
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Summary
This PR migrates legacy NumPy random API usage in
os_stochastic.mdas part of QuantEcon/meta#299.The seeded
np.random.seed(...)/np.random.randn(...)pattern increate_modelis replaced with an explicit seeded generatorrng = np.random.default_rng(seed).Related PRs and issues
I checked for open PRs and issues related to this lecture. No open PR touches it and no open issue concerns this migration.
Details
create_model,np.random.seed(seed)+np.random.randn(shock_size)→rng = np.random.default_rng(seed)+rng.standard_normal(shock_size).1234) is kept, since the lecture already seeded for reproducibility.rngis local tocreate_model, so no hidden global random state remains.@jit/prangecode.Note for reviewers
default_rngproduces a different stream from the legacyRandomState, so the same seed gives different draws. The figures are unchanged; only the printed numbers shift slightly.Hi @mmcky and @HumphreyYang, I'd be grateful if you could take a look when you have time.