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Presentation
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<div><h1>A/B testing at Good Eggs</h1>
<p>Bob Zoller <a href="&#x6d;&#97;&#x69;&#108;&#116;&#111;&#x3a;&#x62;&#x6f;&#x62;&#64;&#103;&#111;&#111;&#100;&#x65;&#x67;&#103;&#115;&#x2e;&#x63;&#x6f;&#x6d;">&#x62;&#x6f;&#x62;&#64;&#103;&#111;&#111;&#100;&#x65;&#x67;&#103;&#115;&#x2e;&#x63;&#x6f;&#x6d;</a></p>
</div>
<div><h2><a href="http://en.wikipedia.org/wiki/Multi-armed_bandit">Multi-Armed Bandit</a> is cool.</h2>
<p>Simultaneously gather new data and optimize decisions based on existing data.</p>
<ul>
<li><a href="http://genetify.com/demo/">Genetify</a></li>
<li><a href="https://github.com/maccman/abba">Abba</a></li>
</ul>
</div>
<div><h2>Learnings</h2>
<ul>
<li>Genetify is a super hacky POC written in the worst kind of PHP</li>
<li>Multi-armed bandit requires an extra roundtrip to the server</li>
<li>Abba doesn&#39;t support unique users</li>
<li>both systems exist in a vaccuum</li>
</ul>
</div>
<div><h2>Where we landed</h2>
<p>A custom setup with:</p>
<ul>
<li>Abba-like client API</li>
<li>choices stored in LocalStorage</li>
<li>asynchronously registered as a MixPanel super property</li>
<li>MixPanel as a reporting interface</li>
</ul>
</div>
<div><h2>Usage</h2>
<pre><code class="lang-coffeescript">experiment = metrics.experiment(<span class="comment">'1-2-3 header')</span>
.variant(<span class="comment">'product promotion', 50)</span>
.variant(<span class="comment">'1-2-3', 50)</span>
.start()
switch experiment.chosen.name
when <span class="comment">'product promotion'</span>
# <span class="keyword">do</span> something
when <span class="comment">'1-2-3'</span>
# <span class="keyword">do</span> something <span class="keyword">else</span></code></pre>
</div>
<div><h2>TODO</h2>
<ul>
<li>server-side experiments</li>
<li>multi-armed bandit support</li>
</ul>
</div>
<div><h2>Who&#39;s next?</h2>
<ul>
<li>Alex: Chrome profiler</li>
<li>Brian/Adam: Kale preso</li>
<li>Max: DTrace</li>
</ul>
</div>

A/B testing at Good Eggs

Bob Zoller bob@goodeggs.com


Simultaneously gather new data and optimize decisions based on existing data.


Learnings

  • Genetify is a super hacky POC written in the worst kind of PHP
  • Multi-armed bandit requires an extra roundtrip to the server
  • Abba doesn't support unique users
  • both systems exist in a vaccuum

Where we landed

A custom setup with:

  • Abba-like client API
  • choices stored in LocalStorage
  • asynchronously registered as a MixPanel super property
  • MixPanel as a reporting interface

Usage

experiment = metrics.experiment('1-2-3 header')
  .variant('product promotion', 50)
  .variant('1-2-3', 50)
  .start()
  
switch experiment.chosen.name
  when 'product promotion'
    # do something
  when '1-2-3'
    # do something else

TODO

  • server-side experiments
  • multi-armed bandit support

Who's next?

  • Alex: Chrome profiler
  • Brian/Adam: Kale preso
  • Max: DTrace
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