- Probabilistic Data Structures for Web Analytics and Data Mining : A great overview of the space of probabilistic data structures and how they are used in approximation algorithm implementation.
- Models and Issues in Data Stream Systems
- Philippe Flajolet’s contribution to streaming algorithms : A presentation by Jérémie Lumbroso that visits some of the hostorical perspectives and how it all began with Flajolet
- Approximate Frequency Counts over Data Streams by Gurmeet Singh Manku & Rajeev Motwani : One of the early papers on the subject.
- [Methods for Finding Frequent Items in Data Streams](http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.187.9800&rep=rep1&t
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# | |
# python drive.py "origin" ["waypoint" ... ] "destination" | |
# | |
# i.e. python drive.py "Union Square, San Francisco" "Ferry Building, San Francisco" 'Bay Bridge' SFO | |
import sys, json, urllib2, md5, os.path, pprint | |
from math import radians, sin, cos, atan2, pow, sqrt | |
from urllib import quote_plus | |
from xml.sax.saxutils import escape | |
from optparse import OptionParser |
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#=============================================================================== | |
# Filename: boost.sh | |
# Author: Pete Goodliffe | |
# Copyright: (c) Copyright 2009 Pete Goodliffe | |
# Licence: Please feel free to use this, with attribution | |
# Modified version | |
#=============================================================================== | |
# | |
# Builds a Boost framework for iOS, iOS Simulator, and OSX. | |
# Creates a set of universal libraries that can be used on an iOS and in the |
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{ | |
"name": "my-app", | |
"version": "1.0.0", | |
"description": "My test app", | |
"main": "src/js/index.js", | |
"scripts": { | |
"jshint:dist": "jshint src/js/*.js", | |
"jshint": "npm run jshint:dist", | |
"jscs": "jscs src/*.js", | |
"browserify": "browserify -s Validating -o ./dist/js/build.js ./lib/index.js", |
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# Nginx+Unicorn best-practices congifuration guide. Heartbleed fixed. | |
# We use latest stable nginx with fresh **openssl**, **zlib** and **pcre** dependencies. | |
# Some extra handy modules to use: --with-http_stub_status_module --with-http_gzip_static_module | |
# | |
# Deployment structure | |
# | |
# SERVER: | |
# /etc/init.d/nginx (1. nginx) | |
# /home/app/public_html/app_production/current (Capistrano directory) | |
# |
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/* bling.js */ | |
window.$ = document.querySelectorAll.bind(document); | |
Node.prototype.on = window.on = function (name, fn) { | |
this.addEventListener(name, fn); | |
} | |
NodeList.prototype.__proto__ = Array.prototype; |
L1 cache reference ......................... 0.5 ns
Branch mispredict ............................ 5 ns
L2 cache reference ........................... 7 ns
Mutex lock/unlock ........................... 25 ns
Main memory reference ...................... 100 ns
Compress 1K bytes with Zippy ............. 3,000 ns = 3 µs
Send 2K bytes over 1 Gbps network ....... 20,000 ns = 20 µs
SSD random read ........................ 150,000 ns = 150 µs
Read 1 MB sequentially from memory ..... 250,000 ns = 250 µs
Picking the right architecture = Picking the right battles + Managing trade-offs
- Clarify and agree on the scope of the system
- User cases (description of sequences of events that, taken together, lead to a system doing something useful)
- Who is going to use it?
- How are they going to use it?
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