| """ | |
| Low rank approximation for the lena image | |
| """ | |
| import numpy as np | |
| import scipy as sp | |
| from scipy import linalg | |
| import pylab as pl | |
| X = sp.lena().astype(np.float) | |
| pl.gray() |
| find . -name "*.php" | while read line; do expand -t 4 $line > $line.new; mv $line.new $line; done |
The count of contributions (summary of Pull Requests, opened issues and commits) to public repos at GitHub.com from Wed, 21 Sep 2022 till Thu, 21 Sep 2023.
Only first 1000 GitHub users according to the count of followers are taken. This is because of limitations of GitHub search. Sorting algo in pseudocode:
githubUsers
.filter(user => user.followers > 1000)
| import numpy as np | |
| def low_rank_approx(SVD=None, A=None, r=1): | |
| """ | |
| Computes an r-rank approximation of a matrix | |
| given the component u, s, and v of it's SVD | |
| Requires: numpy | |
| """ |
| from __future__ import division | |
| from numpy import * | |
| class AdaBoost: | |
| def __init__(self, training_set): | |
| self.training_set = training_set | |
| self.N = len(self.training_set) | |
| self.weights = ones(self.N)/self.N | |
| self.RULES = [] |
| # (C) Mathieu Blondel, November 2013 | |
| # License: BSD 3 clause | |
| import numpy as np | |
| from scipy.linalg import svd | |
| def frequent_directions(A, ell, verbose=False): | |
| """ | |
| Return the sketch of matrix A. |
| import org.apache.spark.mllib.linalg.distributed.RowMatrix | |
| import org.apache.spark.mllib.linalg._ | |
| import org.apache.spark.{SparkConf, SparkContext} | |
| // To use the latest sparse SVD implementation, please build your spark-assembly after this | |
| // change: https://github.com/apache/spark/pull/1378 | |
| // Input tsv with 3 fields: rowIndex(Long), columnIndex(Long), weight(Double), indices start with 0 | |
| // Assume the number of rows is larger than the number of columns, and the number of columns is | |
| // smaller than Int.MaxValue |
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| #!/bin/bash | |
| sudo kextunload -b com.apple.iokit.BroadcomBluetoothHostControllerUSBTransport | |
| sudo kextload -b com.apple.iokit.BroadcomBluetoothHostControllerUSBTransport |