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Spatial data infrastructure development has evolved beyond a collection of spatial data portals to a web of GI services that enable not only geospatial data dissemination online but spatial function support from distributed GI services. Major challenges remain, however, to address the fundamental issues of discovering and synthesizing heterogeneous(More)
We developed a social media analytics and research testbed (SMART) dashboard for monitoring Twitter messages and tracking the diffusion of information in different cities. SMART dashboard is an online geo-targeted search and analytics tool, including an automatic data processing procedure to help researchers to 1) search tweets in different cities; 2)(More)
and reproduction in any medium, provided the original work is properly cited. Objective We developed geo-targeted social media application program interfaces (APIs) for Twitter and a web-based social media analytics and research testbed (SMART) dashboard to analyze " flu " related tweets. During the 2013-14 flu season, for 10 cities with active surveillance(More)
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