CrowdDb is a hybrid computer-human database that processes queries using crowd-sourcing if the data in the database is incomplete or if the query is asking about something that machines are notoriously bad at doing (ex. entity resolution, matching photos).

This is a research project I worked on last summer in collaboration with (primarily) Reynold Xin and Andrew Wang.

We've published two papers so far:

If you're interested in finding out more information, we'll be releasing a website soon, with screenshots and screencasts. You can also follow @crowddb on Twitter for updates.