Anton Holmgren alksl

11 followers · 9 following

Sweden

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alksl / Gemfile

Created August 5, 2016 17:40

	source "https://rubygems.org"

	gem "rails", "~> 4.2"
	gem "rails_admin"
	gem "pg"

alksl / performance_estimation

Created August 13, 2015 12:11

	% Experiments on 5% of the data

	% Parralellisation 8 workers 4 cores with hyperthreading
	>> tic; trainLFM(P, 10, 1, 1); toc
	Elapsed time is 150.857689 seconds.

	>> tic; trainLFM(P, 100, 1, 1); toc
	Elapsed time is 2153.943994 seconds.

	% Just threads

alksl / trainLFM.m

Created August 12, 2015 13:30

	function [X,Y] = trainLFM(P, f, alpha, lambda)
	%trainLFM Trains Latent Factor Model for CF with implicit feedback
	% Takes a playcount matrix P and its parameters alpha and lambda.
	% and uses the C_{u,s} = 1 + \alpha P_{u,s} as confidence model

	[num_users, num_songs] = size(P);

	% Initialize decomposisiton X and Y with values from 0 to 1
	X = rand(num_users, f);
	Y = rand(num_songs, f);

alksl / top_tags

Created July 23, 2015 13:30

	brazilian reggae
	graz
	black metal from netherlands
	hardcore old school
	worldwide electro elite
	kc
	blues based rock
	dance island 2008
	danish hip-hop
	english lyrics

alksl / artist_term_freq_iterator.py

Created July 17, 2015 12:08

	import sys
	from collections import namedtuple
	from collections import defaultdict
	import numpy as np
	import logging
	from progress_bar import ProgressBar

	ArtistTermFreq = namedtuple('ArtistTermFreq', ['artist_id', 'term', 'freq'])

	class ArtistTermFreqIterator:

alksl / artist_term_freq_iterator.py

Created July 17, 2015 11:07

	from collections import namedtuple
	from collections import defaultdict

	ArtistTermFreq = namedtuple('ArtistTermFreq', ['artist_id', 'term', 'freq'])

	class ArtistTermFreqIterator:
	def __init__(self, artist_term_file, artist_collection, term_collection):
	self.term_file = artist_term_file
	self.artist_indexes = self._create_artist_indexes(artist_collection)
	self.track_index = self._create_track_reverse_mapping()

alksl / create_artist_term_document_matrix.py

Created May 10, 2015 17:49

	#!/usr/bin/env python3

	import os
	import sys
	import tables
	import numpy as np
	from scipy import sparse
	from scipy import io
	from collections import defaultdict
	from multiprocessing import Queue, Process

alksl / taste_profile_statistics.py

Created May 8, 2015 08:57

	#!/usr/bin/env python3

	import os
	import sys
	import tables
	import numpy as np

	TASTE_PROFILE_FILE = os.path.abspath(sys.argv[1])
	TASTE_PROFILE_STATISTICS_FILE = os.path.abspath(sys.argv[2])

alksl / handwritten_digits.py

Created February 20, 2015 08:13

	import re
	import scipy.io
	import scipy.linalg
	import scipy.sparse.linalg;
	import numpy
	import matplotlib.pyplot

	def relative_residual(U, z):
	m, n = U.shape
	return numpy.linalg.norm((numpy.eye(m) - U.dot(U.T)).dot(z)) / numpy.linalg.norm(z)

alksl / test.py

Created February 20, 2015 08:02

	# Load data

	import re
	import scipy.io
	import scipy.linalg
	import scipy.sparse.linalg;
	import numpy
	import matplotlib.pyplot

	def relative_residual(U, z):

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