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Eric Benjamin Seufert ESeufert

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ESeufert / psuedo_code_bayesian_bandit.cpp
Last active August 29, 2015 13:56
Psuedo code for a Bayesian Bandit implementation. Bandit is a class.
epsilon = .1;
n_trials = 1000;
counter = 0;
function test() {
//pick a random number between 1 and 10, inclusive
random_number = rand(1, 10);
//if the random number is within the epsilon percentage
if (random_number <= bandit.epsilon * 10) {
//simply picks a bandit at random
@ESeufert
ESeufert / example-1-1.html
Last active August 29, 2015 14:00
<html>
<script src="http://d3js.org/d3.v2.js"></script>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.7.2/jquery.min.js"></script>
<script src="https://ajax.googleapis.com/ajax/libs/jqueryui/1.8.21/jquery-ui.min.js"></script>
<h1>A D3.js Dashboard</h1>
<div id="metrics"></div>
</html>
@ESeufert
ESeufert / example-1-2.js
Last active August 29, 2015 14:00
var data = [];
// this is our data array
var startingDate = new Date(2012, 8, 18);
// this is a date object
for (var i = 0; i < 10; i++) { // loop 10 times to create 10 data objects
var tmpObj = {};
@ESeufert
ESeufert / example-1-3.js
Created May 2, 2014 09:08
function getMaxObjectValue(this_array, element) {
var values = [];
for (var i = 0; i < this_array.length; i++) {
values.push(Math.ceil(parseFloat(this_array[i][""+element])));
}
values.sort(function(a,b){return a-b});
return values[values.length-1];
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ESeufert / example-1-4.js
Created May 2, 2014 09:11
//size the visible area of the graph using the margin values
var width = 500, height = 500;
var margin = {top: 30, right: 10, bottom: 40, left: 60},
width = width - margin.left - margin.right,
height = height - margin.top - margin.bottom;
var minDate = (data[0].date),
maxDate = data[data.length-1].date;
minObjectValue = getMinObjectValue(data, 'DAU');
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ESeufert / example-1-5.js
Created May 2, 2014 09:12
var yAxis = d3.svg.axis()
.scale(y)
.orient("left")
.ticks(5);
var xAxis = d3.svg.axis()
.scale(x)
.orient("bottom")
.ticks(5);
@ESeufert
ESeufert / example-1-6.js
Created May 2, 2014 09:12
var line = d3.svg.line()
.x(function(d) { return x(d["date"]); })
.y(function(d) { return y(d["DAU"]); })
vis.append("svg:path")
.attr("d", line(data))
.style("stroke", function() {
return "#000000";
})
.style("fill", "none")
@ESeufert
ESeufert / example-1-7.js
Created May 2, 2014 09:14
var dataCirclesGroup = vis.append('svg:g');
var circles = dataCirclesGroup
.selectAll('.data-point')
.data(data);
circles
.enter()
.append('svg:circle')
.attr('class', 'dot')
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ESeufert / example-2-1.js
Last active August 29, 2015 14:00
function getData() {
var data = [];
var metrics =
{
"countries":
[
{
"country": "USA",
@ESeufert
ESeufert / example-2-2.js
Created May 2, 2014 09:18
function createAverages(metric) {
for (var i = 1; i < metric.length; i++) {
metric[i].d1_retention = safeDivide(metric[i].d1_retention, metric[i].DNU) * 100;
metric[i].d7_retention = safeDivide(metric[i].d7_retention, metric[i].DNU) * 100;
metric[i].d30_retention = safeDivide(metric[i].d30_retention, metric[i].DNU) * 100;
metric[i].average_session_length = safeDivide(metric[i].sessions_length, metric[i].sessions) / 60;
metric[i].average_sessions_per_user = safeDivide(metric[i].sessions, metric[i].DAU);
}
return metric;