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Brian McFee bmcfee

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bmcfee / filtered_stratified_splitter
Created April 22, 2013 18:21
This function is a wrapper for sklearn.cross_validation.Stratified*. Sometimes, you have data where multiple samples are related to the same object (eg: several audio clips from the same song), and blindly partitioning the data into train/test without accounting for this can bias your estimator. This wrapper allows you to specify a "meta id" for…
def filtered_stratified_split(ids, splitter, Y, **kwargs):
'''Cross-validation split filtration. Ensures that points of the same meta-id end up on the same side of the split
input:
ids: n-by-1 mapping of data points to meta-id
splitter: handle to the cross-validation class (eg, StratifiedShuffleSplit)
Y: n-by-1 vector of class labels
**kwargs: arguments to the cross-validation class
@bmcfee
bmcfee / gist:5878337
Last active December 19, 2015 01:49
A simple demonstration of some librosa functions.
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@bmcfee
bmcfee / gist:5891505
Created June 29, 2013 15:17
librosa stsft example
import librosa
import numpy as np
import scipy
y, sr = librosa.load('/home/bmcfee/data/SMC_Mirex/SMC_MIREX_Audio/SMC_002.wav')
D = librosa.stft(y, n_fft=512)
@bmcfee
bmcfee / Buffered Estimator Demo.ipynb
Created July 10, 2013 16:38
A demonstration of buffered generators for online learning
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@bmcfee
bmcfee / Machinedness.ipynb
Last active June 22, 2018 04:33
Machinedness detector - NYC Monthly Music Hackathon, July 27
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bmcfee / Dynamic Beat Novelty.ipynb
Created September 2, 2013 21:57
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bmcfee / git versioning
Last active January 1, 2016 03:39
Just a quick little function to extract the current git revision hash from a filename. This is useful for data-versioning, say, when running a development version of a feature extractor on a fixed sample.
import os
import git
def get_git_revision(filename, default='unversioned'):
'''Walk up a path name until we find a git dir, then grab its current revision.
If the file is not under any git repository, returns ''.
'''
old_filename = None
@bmcfee
bmcfee / gist:8105661
Last active January 1, 2016 06:29
librosa-gordon feature modeling demo
This file has been truncated, but you can view the full file.
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@bmcfee
bmcfee / pylintrc
Created December 29, 2013 23:33
pylintrc used for scoring librosa
[MASTER]
# Specify a configuration file.
#rcfile=
# Python code to execute, usually for sys.path manipulation such as
# pygtk.require().
#init-hook=
# Profiled execution.
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bmcfee / gist:8202181
Last active January 1, 2016 21:18
First hack at librosa feature extractor transformer wrapping
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