Bivariate copula #3
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- Fixed hardcoded 200 parameter bounds to use Frank-specific 20 bounds - Enhanced Gram matrix regularization with adaptive conditioning - Added weight validation safeguards for numerical stability - Removed scaler-related NaN sources through proper bounds handling - Frank copula now produces clean coefficients without NaN values
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Changes in online_mvdistreg |
- Removed obsolete test files and data - Frank copula working with stable coefficients - All NaN issues resolved with proper parameter bounds
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- Replace slow list comprehensions with vectorized st.t.ppf calls - Vectorize st.t.pdf calculations for major speedup - Apply optimizations to likelihood and derivative functions - Achieve 4.1x performance improvement (90s -> 22s) - Maintain 100% mathematical accuracy with same analytical formulas
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Make a coment in the second derivative function.