Alex Shtof alexshtf
alexshtf
/ constexpr_sqrt.cpp
Last active
September 17, 2024 08:59
Constexpr version of c++ square root (for doubles)
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| #include <limits> | |
| namespace Detail | |
| { | |
| double constexpr sqrtNewtonRaphson(double x, double curr, double prev) | |
| { | |
| return curr == prev | |
| ? curr | |
| : sqrtNewtonRaphson(x, 0.5 * (curr + x / curr), curr); | |
| } |
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| import torch | |
| import torch.nn.functional as F | |
| import copy | |
| import math | |
| def ipw_crossentropy(weights, scores, label): | |
| propensities = torch.reciprocal(weights) | |
| return ( | |
| -label * (scores + torch.log(propensities)) |
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| import torch | |
| class BatchIter: | |
| """ | |
| tensors: feature tensors (each with shape: num_instances x *) | |
| """ | |
| def __init__(self, *tensors, batch_size, shuffle=True): | |
| self.tensors = tensors |