Apr 7, 2012 · I am trying to calculate the inverse of tan in python, but it does not give me the correct value, for example, if I were to do the inverse tan of 1.18, math.atan(1.18) >>>math.atan(1.18) 0.8677 However, the correct answer is …

Oct 31, 2022 · I have two sets of data (say x and y). I want to fit a tanh curve (hyperbolic tangent) for y=x-a-btanh[(x-a)/b)] and return a and b parameters. I tried the follwing code, but get an error, TypeError: 'numpy.ufunc' object is not subscriptable. Also, I want to know if the following function is a right way to fit a tanh curve. Thanks!

Aug 30, 2022 · @Gopala You can estimate some parameters from the data and knowing the tanh function. For example, the data extends from roughly 20 to 100, and tanh from -1 to 1, so a factor of 100 for the amplitude. And tanh spans most of its change between -2 and 2, while your data shows -25 to 75, so another factor 100 for b, but this time the inverse: 1/100.

Apr 6, 2022 · numpy tanh seems much slower than its pytorch equivalence: import torch import numpy as np data=np.random ...

Jul 5, 2016 · Cross entropy expects it's inputs to be logits, which are in the range 0 to 1. The Tanh method transforms the input to values in the range -1 to 1 which cross entropy can't handle. Some possible fixes would be to rescale the input in the final …

Nov 28, 2018 · I need to fit an tanh curve like this one : import numpy as np import matplotlib.pyplot as plt from lmfit ...

Mar 28, 2017 · Note this code implement a modified tanh-estimators proposed in Efficient approach to Normalization of Multimodal Biometric Scores, 2011 In the original version, the mean and standard deviation are estimated by Hampel estimators ( Robust Statistics: The Approach Based on Influence Functions , 1986)

tanh: 5.22203 exp: 14.9393 which matches the ~3x increase in the tanh function when called from Python. The strange thing is that when I run the identical code on a separate machine that has the same OS, I get similar timing results for tanh and exp.

Apr 8, 2020 · In Python the scientfic notation is just a formatting and the value is just a float, so you can do this: >>> print(-1.31739629e-03) -0.00131739629 Since the numbers after e is negative move the decimal point left. This means that none of you outputs are smaller than …

Sep 20, 2014 · I'm trying to write a Python program to use Tanh-sinh quadrature to compute the value of: but although the program converges to a sensible value with no errors in every case, it's not converging to the correct value (which is pi for this …