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How to build a loop for converting entires of categorical columns to numerical values in Pandas?
I have a Pandas data frame with several columns, with some columns comprising categorical entries. I am 'manually' converting these entries to numerical values. For example,
df['gender'] = pd.Series(d...
Nanda
Votes: 0
Answers: 2
Numerically stable calculation of invariant mass in particle physics?
In particle physics, we have to compute the invariant mass a lot, which is for a two-body decay
When the momenta (p1, p2) are sometimes very large (up to a factor 1000 or more) compared to the masses...
olq_plo
Votes: 0
Answers: 2
Strange numerical error when transposing a matrix and solving a linear system in Matlab
I stumbled upon rather strange behaviour in MATLAB. The operator for solving a system of linear equations, \, sometimes produces different results, though the only thing that is changed is the place o...
Nejc Jezersek
Votes: 0
Answers: 1
Warning message: In mean.default(., lead_time) : argument is not numeric or logical: returning NA
I run into this problem.
The thing is, the column I am using is actually a numeric column and I get correct results using:
mean(hotel_bookings_city$lead_time).
but when I try this:
hotel_bookings_cit...
Amir Motlagh
Votes: 0
Answers: 1