Despite the importance of diverse expertise in helping solve difficult interdisciplinary problems, measuring it is challenging and often relies on proxy measures and presumptive correlates of actual knowledge and experience. To address this challenge, we propose a text-based measure that uses researcher’s prior work to estimate their substantive expertise. These expertise estimates are then used to measure team-level expertise diversity by determining similarity or dissimilarity in members’ prior knowledge and skills. Using this measure on 2.8 million team invented patents granted by the US Patent Office, we show evidence of trends in expertise diversity over time and across team sizes, as well as its relationship with the quality and impact of a team’s innovation output.

It’s now remarkably easy to release to the world a cloud-based application programming interface (API) that provides some software function as a service. As a consequence, the cloud API space has become very densely populated, so that even if a particular API offers a service whose potential value is considerable, there are many other factors that play a role in determining whether or not that API will be commercially successful. If you’re thinking about entering the API marketplace with your latest and greatest idea, this post offers some entirely subjective advice on how you might increase the chances of your offering not being lost in all the noise.