Top "Nan" questions

Numercially stable softmax

Is there a numerically stable way to compute softmax function below? I am getting values that becomes Nans in Neural …

python numpy nan scientific-computing softmax

How to fill dataframe Nan values with empty list [] in pandas?

This is my dataframe: date ids 0 2011-04-23 [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13,... 1 2011-04-24 [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13,... 2 2011-04-25 [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13,... 3 2011-04-26 Nan 4 2011-04-27 [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13,... 5 2011-04-28 [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13,... I …

python pandas nan

Float.NaN == Float.NaN

Why does this comparison give me 'false'? I looked at the source and Float.NaN is defined as /** * A constant …

java comparison floating-point nan

Which is the Swift equivalent of isnan()?

Which is the equivalent of isnan() in Swift ? I need to check if some operation results are valid and delete …

cocoa swift nan

Missing values in Time Series in python

I have a time series dataframe, the dataframe is quite big and contain some missing values in the 2 columns('Humidity' …

python pandas nan imputation

What do these three special floating-point values mean: positive infinity, negative infinity, NaN?

How can we use them in our codes, and what will cause NaN(not a number)?

java floating-point nan infinity

Is Number.IsNaN() more broken than isNaN()

Soooooo isNaN is apparently broken in JavaScript, with things like: isNaN('') isNaN(' ') isNaN(true) isNaN(false) isNaN([0]) …

javascript nan ecmascript-6

Conditional mean over a Pandas DataFrame

I have a dataset from which I want a few averages of multiple variables I created. I started off with: …

python pandas mean nan

Python JSON encoder convert NaNs to null instead

I'm writing code to receive an arbitrary object (possibly nested) capable of being converted to JSON. The default behavior for …

python json numpy nan

Pandas NaN introduced by pivot_table

I have a table containing some countries and their KPI from the world-banks API. this looks like . As you can …

python pandas pivot pivot-table nan