 a sharded MySQL table and used to compute aggregated information about audiences (follower/followee relationships) or communities (contributors to a particular hashtag). This context led us to set the following prerequisites for the gender classifier we wanted to build:
<ul>
<li><em>Real-time classification:</em>  We already knew the load we would have and it was important for the classifier to not drastically increase the amount of machines needed to process these profiles.</li>
<li><em>&gt;0.9 success 