prcr update

The R package for person-oriented analysis (prcr) is updated (it’s now version 0.1.4). In particular, it was not clear how to use the profile assignments (i.e., what cluster each response is in) in subsequent analyses. So, the update now returns two different representations of the profile assignments, or which profile is associated with each observation: …

More

Rankings galore

College rankings have become big business.  There are numerous media and other organizations that have jumped in to create their own rankings, each with a unique methodology.  In 2013 President Obama announced that the federal government would get into the college ratings business as well.  After almost two years of effort, and the release of …

More

How good is MEGAHIT?

A few weeks back, Nick Loman (via Manoj Samanta) brought MEGAHIT to our attention on Twitter. MEGAHIT promised “an ultra-fast single-node solution for large and complex metagenome assembly” and they provided a preprint and some open source software. This is a topic near and dear to my heart (see Pell et al., 2012 and Howe …

More

An Introduction to Linked Open Data

If you’ve done any digital work—and who isn’t doing digital these days—then you’ve probably heard the term “linked open data” tossed around. “Open data,” as defined by Open Data Institute, is primary data that is freely available for others to use and share that is structured in a standard format that plays well with other file …

More

Celebrating 2 years of research blogging by analyzing my blog

In May 2012, I started this blog to rave about the IPython Notebook, a new scientific computing tool that’s still an integral part of my research workflow today. Two years have passed, and I’ve written about a breadth of topics ranging from statistics tutorials to science outreach to my PhD research to evolution to chess… and even the world’s deadliest actors. This blog has proven to …

More

More lies and bad analyses by Shareaholic are misleading the public

Earlier this week, Shareaholic published a report claiming that Reddit referral traffic is rapidly declining. Shortly thereafter, the report appeared on several respectable news outlets, including The Atlantic and Business Insider, chiming in and recommending that SEO experts start looking at web sites other than Reddit for referral traffic. Normally I’d ignore a report like …

More