CLASSIFIERS IN SCIKIT-LEARN THAT HANDLE NAN/NULL - STACK OVERFLOW
May 19, 2015 I heard that some random forest models will ignore features with nan values and use a randomly selected substitute feature. This doesn't seem to be the default behaviour in scikit learn though. From stackoverflow.com
Jul 13, 2013 nan stands for Not A Number, and this is not equal to 0. Although positive and negative infinity can be said to be symmetric about 0, the same can be said for any value n, meaning that the result of adding the two yields nan. This … From stackoverflow.com
PYTHON - HOW TO CHECK IF PARTICULAR VALUE (IN CELL) IS NAN IN PANDAS ...
False However if I check that value I get: >>> df.iloc[1,0] nan So, why is the second option not working? Is it possible to check for NaN values using iloc? Editor's note: This question previously used pd.np instead of np and .ix in addition to .iloc, but since these no longer exist, they have been edited out to keep it short and clear. From stackoverflow.com
PYTHON - INDEX OF NON "NAN" VALUES IN PANDAS - STACK OVERFLOW
May 17, 2017 From Pandas data frame, how to get index of non "NaN" values? My data frame is A b c 0 1 q1 1 1 2 NaN 3 2 3 q2 3 3 4 q1 NaN 4 5 q2 7 And I want the From stackoverflow.com
GET PANDAS.READ_CSV TO READ EMPTY VALUES AS EMPTY STRING …
May 7, 2017 The string "nan" is a possible value, as is an empty string. I managed to get pandas to read "nan" as a string, but I can't figure out how to get it not to read an empty value as NaN. From stackoverflow.com
FLOATING POINT - WHY IS NAN NOT EQUAL TO NAN? - STACK OVERFLOW
NaN is designed to propagate through all calculations, infecting them like a virus, so if somewhere in your deep, complex calculations you hit upon a NaN, you don't bubble out a seemingly sensible answer. Otherwise by identity NaN/NaN should equal 1, along with all the other consequences like (NaN/NaN)==1, (NaN*1)==NaN, etc. From stackoverflow.com
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