I have started to work on a Django project, and I would like to set some environment variables without setting them manually or having a bash file to source. I want to set the following variables: I have read this, but that does not solve what I want. In addition, I have tried setting the environment variable…
L1/L2 regularization in PyTorch
How do I add L1/L2 regularization in PyTorch without manually computing it? Answer See the documentation. Add a weight_decay parameter to the optimizer for L2 regularization.
pip with embedded python
I installed embedded python from here, titled “Windows x86-64 embeddable zip file”, but it does not have pip installed, it does not have site-packages either, when I try to do python get-pip.py it failed to run because this file has import pip in it. So how can I install pip within a embedded pyth…
How do you compute accuracy in a regression model, after rounding predictions to classes, in keras?
How would you create and display an accuracy metric in keras for a regression problem, for example after you round the predictions to the nearest integer class? While accuracy is not itself effectively defined conventionally for a regression problem, to determine ordinal classes/labels for data, it is suitabl…
Cannot install openCV 3.1.0 with python3. CMAKE not including or linking python correctly
I’m trying to get OpenCV 3.1.0 installed with Python3 on my machine. Because I have Ubuntu 16.04, I am following this guide exactly: http://www.pyimagesearch.com/2016/10/24/ubuntu-16-04-how-to-install-opencv/ However, I have trouble in step 4, after running cmake. The output of my cmake program has this…
py.test assert may raise, and if it raises it will be __
Is there pytest functionality similar to pytest.raises that passes iff the block raises the specified exception, or doesn’t raise at all? Something like: This question came up in the following situation.. The function to test: A couple of simple tests (fixtures below): The fixtures: the indicated <==…
Python and SPSS giving different output for Logistic Regression
Code: Here’s the dataset Result: Now I added the same data in spss.Analyse->Regression->Binary Logistic Regression. I set the corresponding Y -> dependent and XT -> Covariates. The results weren’t even close. Am I missing something in python or SPSS? Python-Sklearn Answer SPSS Logistic…
How to redirect from a view to another view In Django
This is a view written for my posts app in Django. The problem is that after filling the update form and submitting it happens successfully. But it creates confusion for the user because the same HTML page is there and how can I redirect into the updated object? Answer You can use redirect from http shortcuts…
pandas DataFrame style, highlight nan’s
Say with this DataFrame How can I check which element is nan inside df.applymap? (ie, not using df.isnull) The problem comes from where I want to use the pandas html styling. We have the built-in nan highlighting but it changes the background colour, instead I want “nan” to be displayed in red. So…
Is numpy.random.choice with replacement equivalent to multinomial sampling for a single trial?
I understand that strictly on concept, they are different. But in a single trial (or experiment) for numpy.random.multinomial, is it sampling the same way as numpy.random.choice though giving a different view of the output? For example: Output gives the identity of what was picked in the array [0,1,2,3,4,5] a…