jiahao

#!/usr/bin/env python

'''
Pure Python implementation of some numerical optimizers

Created on Jan 21, 2011

@author Jiahao Chen
'''

jiahao

1. Log on to the WebMoira interface. You will need your MIT personal certificate set up correctly.
2. Click this button.
3. Enjoy.

jiahao

using Distributions

export Measure, DiscreteMeasure, Estimator, EstimatorQuality,
       blb, randsubset

abstract Measure

type DiscreteMeasure{S<:Number,T<:Number} <: Measure
  points :: Vector{S}
  weights :: Vector{T}

jiahao

# Hypergeometric random variate generators
#
# (c) 2013 Jiahao Chen <[email protected]>
#
# This file implements several random variate generators as described in the
# reference paper.
#
# Algorithm   Function
# HBU         randhg_hbu
# HIN         randhg_hin

jiahao

Process:         julia-readline [12132]
Path:            /Users/USER/*/julia-readline
Identifier:      julia-readline
Version:         ???
Code Type:       X86-64 (Native)
Parent Process:  Vim [11995]
Responsible:     MacVim [11340]
User ID:         502

Date/Time:       2013-10-28 23:52:40.788 -0400

jiahao

import Base.fetch; fetch(t::Vector) = [fetch(tt) for tt in t]
import Base.length; length(r1::RemoteRef)=length(fetch(r1))
addprocs(8-nprocs()) #Run on 8 processors

chunkrange(i, nc) = floor((i-1)*nc)+1:floor(i*nc)
function chunk(z, n)
    nc = length(z)/n
    y = Vector{typeof(z[1])}[]
    for i=1:n #Number of chunks
        push!(y, (typeof(z[1]))[])

jiahao

#Set up data partition
sudo mkdir /data
sudo chmod 777 /data
sudo "echo /dev/xvdb   /data	ext4	rw,user,exec,comment=cloudconfig	0	2 >> /etc/fstab"
sudo mount /data

#Install build environment
sudo sed -i "s/enabled=0/enabled=1" /etc/yum.repos.d/epel.epo
sudo yum -y update
sudo yum -y upgrade

jiahao

function bicgstabell(K::KrylovSubspace; tol::Real, l::Int=1)
    k=-l
    initrand!(K)
    #XXX Choose r̃[0]
    r[0]=b-nextvec(K)
    u[-1]=0
    x[0]=K.v0
    ρ₀=1
    α=0
    ω=1

jiahao

/* Experimental typographically tinkered IJulia stylesheet
 * Copyright © 2013 Jiahao Chen <[email protected]>
 * MIT License
 *
 * To use, place in ~/.ipython/profile_julia/static/custom/custom.css
 * and refresh IJulia
 * 
 * Based on suggestions from practicaltypography.com
 */

jiahao

using Images
using JSON
auth_token=#Put your auth_token here
download("https://api.github.com/repos/JuliaLang/julia/contributors?access_token=$(auth_token)", "julia_contribs.json")
authors=JSON.parse(open("julia_contribs.json"))
for (idx, author) in enumerate(authors)
  authorname=author["login"]
  gravatar_filename = string("avatar_", authorname, ".png")
  download(author["avatar_url"], gravatar_filename)
  theimage = Images.imread(gravatar_filename)