feat: docs restructure, show_versions, remove 1e-10 zero guards#5
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feat: docs restructure, show_versions, remove 1e-10 zero guards#5
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Provides Elvers, Polars, Python, platform, and architecture info in a single call for bug reports. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
- Issue templates: bug report, feature request, new operator - CODE_OF_CONDUCT.md (Contributor Covenant v2.1) - SECURITY.md with scope definition - Enhanced PR template with review criteria Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
- CLAUDE.md: AI memo only (conduct, architecture, known limitations) - CONTRIBUTING.md: human contributor guide (workflow, invariants, rationale) - README.md: concise usage with design invariants - OPERATORS.md: updated zero-handling descriptions - Removed duplication across files Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
[NUMERICAL] Pure divisions (divide, inverse): guard removed entirely. Inf -> null flows through Factor constructor. Statistical operators (zscore, scale, normalize, signal, etc.): threshold changed from < 1e-10 to == 0. Degenerate cases (constant series) still return semantic defaults (0.0). Regression operators (ts_regression, vector_neut, regression_neut): threshold changed from < 1e-10 to == 0. Test tolerances: removed hardcoded abs=1e-10 where pytest.approx defaults are sufficient. Impact: eliminates silent data loss from legitimate small values. Near-zero denominators now produce large but finite values; use winsorize/truncate to handle outliers. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Removed interval parameter from load(). The balanced panel skeleton is now built from the union of all timestamps present in the data, not from a generated datetime_range. This eliminates frequency inference and correctly handles weekends, holidays, and irregular trading calendars without generating spurious all-null rows. Added _check_intervals() to warn about irregular timestamp spacing. Added timestamp type validation (must be pl.Date or pl.Datetime). Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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Summary
Change Type
Numerical Impact
Eliminates silent data loss from legitimate small values.
Testing
pytest tests/ -v) -- 141 passedruff check elvers/)