mikolalysenko

var ops = require('ndarray-ops')

function toRGBA (glyph) {
  var output = ndarray(
    new Uint8ClampedArray(glyph.size*4), 
    [glyph.shape[0], glyph.shape[1], 4])
  for(var i=0; i<3; ++i) {
    ops.assign(output.pick(-1,-1,i), glyph)
  }
  ops.assigns(output.pick(-1,-1,3), 0xff)

mikolalysenko

var ops = require('ndarray-ops')
 
function toRGBA (glyph) {
  
  var output = ndarray(
    new Uint8ClampedArray(glyph.size*4), 
    [glyph.shape[0], glyph.shape[1], 4])
    
  var glyphPad = ndarray(
    glyph.data,

mikolalysenko

//Sets all components equal, works in place
function toRGBA (glyph) {
  return ndarray(
    glyph.data,
    [glyph.shape[0], glyph.shape[1], 4],
    [glyph.stride[0], glyph.stride[1], 0],
    glyph.offset)
}

mikolalysenko

'use strict'

var gauss = require('gauss-random')
var uniq = require('uniq')
var alphaShape = require('alpha-shape')
var graphToPolygons = require('planar-graph-to-polyline')
var delaunay = require('delaunay-triangulate')
var circumradius = require('circumradius')

function coalphaComplex(alpha, points) {

mikolalysenko

var baboon = require("baboon-image")
var ndarray = require('ndarray')
var imshow = require('ndarray-imshow')
var translate = require('ndarray-translate-fft')

var baboon64 = ndarray(new Float64Array(baboon.data), baboon.shape, baboon.stride, 0)

translate.wrap(baboon64, [100, 100, 0])

imshow(baboon64)

mikolalysenko

var boxIntersect = require('box-intersect')
var segIntersect = require('robust-segment-intersect')

function getBoxes(positions, cells) {
  return cells.map(function(e) {
    var a = positions[e[0]]
    var b = positions[e[1]]
    return [ Math.min(a[0], b[0]), Math.min(a[1], b[1]), Math.max(a[0], b[0]), Math.max(a[1], b[1]) ]
  })  
}

mikolalysenko

import plotly.plotly as py
import numpy as np
import random

#Generate 3 random Gaussian clusters with 40 points each
clusters = [40, 40, 40]
x = []
y = []
z = []
for n in clusters:

mikolalysenko

Meta algorithms

A list of meta-algorithms

Automatic differentiation

Persistence

Path copying

mikolalysenko

name of display: :0
display: :0  screen: 0
direct rendering: Yes
server glx vendor string: Parallels Inc
server glx version string: 1.4
server glx extensions:
    GLX_EXT_texture_from_pixmap, GLX_SGIX_fbconfig
client glx vendor string: Parallels Inc
client glx version string: 1.4
client glx extensions:

mikolalysenko

Merkleization

Introduction

Distributed systems

• Distributed systems = Computers + relativity
• Different machines have different clocks, perception of time, and views of the state of the system
• Challenges: Communication failures, hardware failures, latency, bandwidth
• All computer systems today are distributed at some level (nature obeys relativity after all), the extent to which this nature is exposed depends on the loads put upon the system.