pgolding

# http://scikit-learn.org/stable/modules/generated/sklearn.metrics.pairwise.cosine_similarity.html
import numpy as np
from sklearn.metrics.pairwise import cosine_similarity

# The usual creation of arrays produces wrong format (as cosine_similarity works on matrices)
x = np.array([2,3,1,0])
y = np.array([2,3,0,0])

# Need to reshape these
x = x.reshape(1,-1)

peterroelants

rain-1

WannaCry|WannaDecrypt0r NSA-Cyberweapon-Powered Ransomware Worm

• Virus Name: WannaCrypt, WannaCry, WanaCrypt0r, WCrypt, WCRY
• Vector: All Windows versions before Windows 10 are vulnerable if not patched for MS-17-010. It uses EternalBlue MS17-010 to propagate.
• Ransom: between $300 to $600. There is code to 'rm' (delete) files in the virus. Seems to reset if the virus crashes.
• Backdooring: The worm loops through every RDP session on a system to run the ransomware as that user. It also installs the DOUBLEPULSAR backdoor. It corrupts shadow volumes to make recovery harder. (source: malwarebytes)
• Kill switch: If the website www.iuqerfsodp9ifjaposdfjhgosurijfaewrwergwea.com is up the virus exits instead of infecting the host. (source: malwarebytes). This domain has been sinkholed, stopping the spread of the worm. Will not work if proxied (source).

update: A minor variant of the viru

halhen

# data from http://ec.europa.eu/eurostat/web/gisco/geodata/reference-data/population-distribution-demography/geostat
# Originally seen at http://spatial.ly/2014/08/population-lines/

# So, this blew up on both Reddit and Twitter. Two bugs fixed (southern Spain was a mess,
# and some countries where missing -- measure twice, submit once, damnit), and two silly superflous lines removed after
# @hadleywickham pointed that out. Also, switched from geom_segment to geom_line.

# The result of the code below can be seen at http://imgur.com/ob8c8ph

library(tidyverse)

aparrish

karpathy

"""
A bare bones examples of optimizing a black-box function (f) using
Natural Evolution Strategies (NES), where the parameter distribution is a 
gaussian of fixed standard deviation.
"""

import numpy as np
np.random.seed(0)

# the function we want to optimize

ageitgey

How to install dlib v19.9 or newer (w/ python bindings) from github on macOS and Ubuntu

Pre-reqs:

• Have Python 3 installed. On macOS, this could be installed from homebrew or even via standard Python 3.6 downloaded installer from https://www.python.org/download. On Linux, just use your package manager.
• On macOS:
  • Install XCode from the Mac App Store (or install the XCode command line utils).
  • Have homebrew installed
• On Linux:

Zulko

"""
An alternative text clip for Moviepy, relying on Gizeh instead of ImageMagick

Advantages:
- Super fast (20x faster)
- no need to install imagemagick
- full-vector graphic, no aliasing problems
- Easier font names

Disadvantages:

tenderlove

require 'json'
require 'fiddle'

module HeapUtils
  SIZEOF_HEAP_PAGE_HEADER_STRUCT = Fiddle::SIZEOF_VOIDP

  HEAP_PAGE_ALIGN_LOG     = 14
  HEAP_PAGE_ALIGN         = 1 << HEAP_PAGE_ALIGN_LOG
  HEAP_PAGE_ALIGN_MASK    = ~(~0 << HEAP_PAGE_ALIGN_LOG)
  # SIZEOF_RVALUE           = 56 # Only when GC_DEBUG is enabled

paladini

Setup redis-cli without the whole Redis Server on AWS EC2

This fast tutorial will teach you how to install redis-clion AWS EC2 without having to install the whole Redis Server. Firstly, SSH into your EC2 instance and run the following command:

$ sudo yum install gcc

This may return an "already installed" message, but that's OK. After that, just run:

$ wget http://download.redis.io/redis-stable.tar.gz && tar xvzf redis-stable.tar.gz && cd redis-stable && make && sudo cp src/redis-cli /usr/local/bin/ && sudo chmod 755 /usr/local/bin/redis-cli