One, there has been a significant amount of new research since the original entry was created.
People can document whenever and whatever they want in several modes i. Social media gives an opportunity to communicate the current situation to other affected people or to emergency agencies although mobile phone or emergency lines may be overloaded.
In the last years, studies were conducted focusing on different aspects of social media in crisis management underlining its continuously increasing importance in this area. Also, systems, tools and algorithms performing social media analysis have been developed and implemented to automatize monitoring, classification or aggregation tasks.
This contribution summarizes important research work i. It gives an overview on existing case studies and analysis frameworks developed to support emergency agencies in several crisis management activities.
This work should be seen as a starting point for people interested in this topic or coming from similar research areas to gain an overview on social media analysis in crisis management.
Preparedness takes all actions e. Response comprises activities that are direct reactions on the impact of an already occurred disaster to stabilize the situation.
Recovery focuses on all steps to reestablish the damaged infrastructure. In all these phases, information about the situation at hand is important to take decisions and plan actions. In all three phases especially, in responsesocial media is getting increasingly important for crisis management.
People can document their situation, observations or anything around the crisis at hand, despite overloaded phone lines or not yet arrived emergency agencies. Several studies, summarized in Section 2, show the importance of social media during a crisis.
The studies show that social media is used in different contexts. Also, different emergency agencies e. Acquiring data from social media allows agencies to see the situation from another perspective, e. The - via social media - identified incidents and threats can be used to plan emergency response in a more efficient way.
Beside the collaboration between emergency agencies and the citizens, social media also offers a collaboration platform between emergency agencies, e.
It also allows the coordination and communication of self-help groups initiated by affected citizens, covering collaboration between the public in case of an emergency. Independent of the range of applications, social media gained high research attention in recent years.
Thus, this contribution summarizes important studies and technical work in the area of social media analysis in crisis management. The contribution is structured as follows.
Section 2 gives an overview of related studies. Section 3 describes several technical developments for social media analysis. Section 4 shows social media tools introduced in a context different from crisis management, but which are nevertheless interesting options to be adapted to crisis management.
Section 6 summarizes and concludes the work. Palen  and Vieweg et al. Also, the use of social media sharing tools i.
It is stated that the pictures posted are significant for emergency response. The authors performed sentiment analysis, topic extraction and they examine in general the usage of social media.
During the revolution, tweets were used for news propagation, documenting and distributing information on events. Yates and Paquette  depicted social media as an important collaboration tool also between emergency agencies.
They studied social media use in the context of the Haiti earthquake in They analyzed the tweeting behavior of two big UK police forces during the UK riots Analysis showed that the amount of followers of the forces increased significant after the riots . The authors uncovered two communication strategies informal vs.
In addition, they also stated that several investigations are needed to support police forces in using Twitter in the future.
Organizational policies in using social media are needed as well.to understand gang members’ social media usage patterns.
Keywords—Gang Activity Understanding, Social Media Analy- of social media analysis to investigate and anticipate gang related crimes. For example, the New York City police depart- Analyzing the Social Media Footprint of Street Gangs.
Gang members use social media to incite violence. New trend in social media behavior has connections to hip hop music.
Gang members collectively perceive a threat from a rival gang (which increases gang cohesion). A mobilizing event occurs -- possibly, but not necessarily, violent. There is an escalation of activity. Social Media Analysis for Crisis Management: A Brief Survey. Daniela Pohl Thus, this contribution summarizes important studies and technical work in the area of social media analysis in crisis management. The contribution is structured as follows. 2 STUDIES ON SOCIAL MEDIA USE IN CRISIS. The Haunting Social Media Trail Left by a Teen Gang Member I've researched how social media beefs become IRL shootings in Chicago for years. This is what it all means for preventing gun violence.
Expressions of masculinity by African American males . The Haunting Social Media Trail Left by a Teen Gang Member I've researched how social media beefs become IRL shootings in Chicago for years.
This is what it all means for preventing gun violence.
Jun 25, · A less than 11% increase in illegal cross-border migration over , the lowest year on record, means there is no crisis at the border. Most Gang Members Use Social Media, Study Finds Experts say gang members use online tools to plan crimes, recruit members and threaten rivals, and online activity often leads to offline violence.
Can monitoring the social media activities of drug cartels and criminal gangs help disrupt their real-life networks? Drugs, Guns, And Selfies: Gangs On Social Media Even when gang members.