AnupRaj AnupRaj

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rakeshtembhurne / import_export_gz.sql

Created July 15, 2013 08:40

MySQL: Import and export in gzip form

	// Export database in gzip form
	mysqldump -u user -p database \| gzip > database.sql.gz

	// Import database from gzip form
	gunzip < database.sql.gz \| mysql -u user -p database

thinrhino / tf-idf.py

Created May 5, 2014 13:09

Calculate tf-idf

	# ref: http://www.tfidf.com/
	# Example:
	# Consider a document containing 100 words wherein the word cat appears 3 times.
	# The term frequency (i.e., tf) for cat is then (3 / 100) = 0.03. Now, assume we
	# have 10 million documents and the word cat appears in one thousand of these.
	# Then, the inverse document frequency (i.e., idf) is calculated as log(10,000,000 / 1,000) = 4.
	# Thus, the Tf-idf weight is the product of these quantities: 0.03 * 4 = 0.12.
	#
	# Hence:
	# 1. Calculate term frequency

steventhebrave / make-sounds.html

Created September 25, 2017 13:19

	<!DOCTYPE html>
	<html>
	<head><title>SOUND</title></head>
	<body>
	<div>Frequence: <span id="frequency"></span></div>
	<script type="text/javascript">

	var audioCtx = new (window.AudioContext \|\| window.webkitAudioContext)();
	var oscillatorNode = audioCtx.createOscillator();
	var gainNode = audioCtx.createGain();