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Fix docstrings reference for the betainc_grad function #412

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Merged
merged 3 commits into from
Aug 14, 2023
Merged

Fix docstrings reference for the betainc_grad function #412

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a920690
Fix docstrings reference for the betainc_grad function
amyoshino Aug 14, 2023
fd0ca09
Merge branch 'pymc-devs:main' into beta_inc_docstring
amyoshino Aug 14, 2023
e908497
Fixing reference in suggested docstring
amyoshino Aug 14, 2023
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12 changes: 6 additions & 6 deletions pytensor/scalar/math.py
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Expand Up @@ -1357,13 +1357,13 @@ def c_code(self, *args, **kwargs):


def betainc_grad(p, q, x, wrtp: bool):
"""Gradient of the regularized lower gamma function (P) wrt to the first
argument (k, a.k.a. alpha).

Adapted from STAN `grad_reg_lower_inc_gamma.hpp`
"""
Gradient of the regularized incomplete beta function wrt to the first
argument `p` (aka alpha) or the second argument `q` (aka beta),
depending on whether `wrtp` is true.

Reference: Gautschi, W. (1979). A computational procedure for incomplete gamma functions.
ACM Transactions on Mathematical Software (TOMS), 5(4), 466-481.
Reference: Boik, R. J., & Robison-Cox, J. F. (1998). Derivatives of the incomplete beta function.
Journal of Statistical Software, 3(1), 1-20.
"""

def _betainc_der(p, q, x, wrtp, skip_loop):
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