We’re publishing a new Strata Gem each day all the way through to December 24. Yesterday’s Gem: Make beautiful graphs of your Twitter network.
Usahidi is a software platform built to crowdsource information over multiple channels such as text messages, email and Twitter. Originally built in 2008 to map reports of post-election violence in Kenya, Usahidi has evolved into a non-profit company with a suite of tools that enables crowdsourced information aggregation, with applications ranging from citizen journalism and crisis management to the more commercial side of brand monitoring.
CrowdMap is a minimum-fuss way to use the Usahidi tools to collect and visualize geographical data. Though built for emergency use, it has many applications for representation of local knowledge.
Crowdmap of the UK Tube strikes, created by the BBC
SwiftRiver is a media aggregation and filtering tool. It aggregates sources such as Twitter, blog, email and SMS, and provides features that help identify relationships and trends in the incoming data sets. Through semantic analysis, incoming content can be automatically categorized for review.
As well as data stream management and curation, SwiftRiver places an emphasis on adding context and history to online research, enabling the location and reputation of data sources to be taken into account.