Events are a core concept of spatial information (Kuhn, 2012), but location-based social media (LBSM) provide foremost information on reactions to events. While reactions and events are closely coupled, there are specifics that require attention when working with LBSM data. Individuals have varied degrees of agency in initiating, reacting to or modifying the course of events and reactions can take the form of observations of occurrence, expressions containing sentiment or emotions or a call to action. Key characteristics of reactions in LBSM include a referent event and information about who reacted, when, where and how, as well as information relating one reaction to others. Collective reactions are composed of multiple individual reactions sharing common referents. They can be characterized according to the following dimensions: spatial, temporal, social, semantic, interlinkage. Our conceptual framework allows us to characterize and compare reactions. For instance, for a thematically well defined class of event such as cherry blossoming we can explore differences and similarities in space and time in different towns, countries and even cultures. Other events may have very complex spatio-temporal signatures (e.g. political processes such as Brexit or elections) which may be decomposed into a series of individual events (e.g. a temporal window around the result of a vote) whereby reactions can be characterised and compared with respect to this event. The purpose of our framework is twofold: firstly we explore ways in which reactions to events in LBSM can be usefully described and secondly, we use the framework to underpin the development of methods for analysing and understanding collective reactions to events.
Created 7 Aug 2017 Edited 7 Aug 2017 Status Active