javier ramírez javier

The mongo airbnb sample database

Import it into your local mongo with:

mongoimport -h localhost:27017 --db sample_airbnb --collection listingsAndReviews --file listingsAndReviews.json

Based on this blogpost.

Install with Homebrew:

$ brew install postgresql@14

(The version number 14 needs to be explicitly stated. The @ mark designates a version number is specified. If you need an older version of postgres, use postgresql@13, for example.)

ffmpeg

Converting Audio into Different Formats / Sample Rates

Minimal example: transcode from MP3 to WMA:
ffmpeg -i input.mp3 output.wma

You can get the list of supported formats with:
ffmpeg -formats

You can get the list of installed codecs with:

UPDATE a fork of this gist has been used as a starting point for a community-maintained "awesome" list: machine-learning-with-ruby Please look here for the most up-to-date info!

Resources for Machine Learning in Ruby

Gems

liblinear-ruby: Ruby interface to LIBLINEAR using SWIG

	from sklearn.preprocessing import normalize

	# open the vectors.txt file containing all the trained word embeddings, extracting the descriptors & embeddings
	num_points = len(open('vectors.txt','r').read().split('\n'))

	first_line = True
	index_to_word = []
	with open("vectors.txt","r") as f:
	for line_num, line in enumerate(f):
	if first_line:

	# With help from https://aws.amazon.com/blogs/ai/build-your-own-face-recognition-service-using-amazon-rekognition/

	frame_skip = 100 # analyze every 100 frames to cut down on Rekognition API calls

	import boto3
	import cv2
	from PIL import Image
	import io

	rekog = boto3.client('rekognition')

	# Why?
	# To paste text into windows that normally don't allow it or have access to the clipboard.
	# Examples: Virtual machines that do not yet have tools installed, websites that hijack paste
	#
	# Extended vs Simple?
	# * Includes an initial delay to allow you to change active windows
	# * Adds small delay between keypresses for slower responding windows like SSH sessions
	# * Better handling of numbers
	# * VMWare bug fix
	#

	"""Google spreadsheet related.
	Packages required: oauth2client, google-api-python-client
	* https://gist.github.com/miohtama/f988a5a83a301dd27469
	"""

	from oauth2client.service_account import ServiceAccountCredentials
	from apiclient import discovery


	def get_credentials(scopes: list) -> ServiceAccountCredentials:

	container_commands:
	01_install_pma:
	test: test -n "$PMA_VER" && test ! -f /tmp/phpmyadmin.tar.gz
	command: \|
	cd /tmp
	wget https://files.phpmyadmin.net/phpMyAdmin/${PMA_VER}/phpMyAdmin-${PMA_VER}-all-languages.tar.gz
	wget https://files.phpmyadmin.net/phpMyAdmin/${PMA_VER}/phpMyAdmin-${PMA_VER}-all-languages.tar.gz.sha1
	cd /tmp && sha1sum --check phpMyAdmin-${PMA_VER}-all-languages.tar.gz.sha1
	if [[ $? == 0 ]]
	then