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Results tagged with python
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user 76815
Python is a programming language commonly used for machine learning. Use this tag for any *on-topic* question that (a) involves `Python` either as a critical part of the question or expected answer, & (b) is not *just* about how to use `Python`.
11
votes
Methods in R or Python to perform feature selection in unsupervised learning
It's a year old but I still feel it is relevant, so I just wanted to share my python implementation of Principal Feature Analysis (PFA) as proposed in the paper that Charles linked to in his answer. …
- 396
5
votes
1
answer
2k
views
Class-specific feature importance
I'm training a Random Forest classifier using sklearn in Python 2.7, on a large dataset ~(80k,250) where observations are movie reviews and features are attributes of critic and movie. …
- 396
4
votes
1
answer
3k
views
Computing the Entropy of a walk
Here's a small Python example:
import numpy as np
from collections import Counter
def time_correlated_entropy(walk):
counter = Counter(zip(walk[:-1], walk[1:]))
P = np.array(counter.values(), …
- 396