Investigating images as indicators for relevant social media messages in disaster management
نویسندگان
چکیده
The use of social media during disasters has received increasing attention in studies of the past few years. Existing research is mostly focused upon analyzing text-based messages from social media platforms such as Twitter, while imagebased platforms have not been extensively addressed hitherto. However, pictures taken on-the-ground can offer reliable and valuable information for improving situation awareness and could be used as proxy indicators for relevance. To test this hypothesis, this work explores various social media platforms, including imageand text-based ones in the case of floods in Saxony 2013, Germany. Results show that there is a significant association between disaster-related messages containing images and their proximity to the disaster event. Hence, the existence of an image within a social media message can serve as an indicator for high probability of relevant content, and thus can be used for enhancing information extraction from social media towards improving situation awareness.
منابع مشابه
A geographic approach for combining social media and authoritative data towards identifying useful information for disaster management
In recent years, social media emerged as a potential resource to improve the management of crisis situations such as disasters triggered by natural hazards. Although there is a growing research body concerned with the analysis of the usage of social media during disasters, most previous work has concentrated on using social media as a standalone information source, whereas its combination with ...
متن کاملRumors on Social Media in disasters: Extending Transmission to Retransmission
In recent years, the widespread use of social media has facilitated the propagation of messages after disasters. Unfortunately, because the veracity of messages is often difficult to determine in a disaster situation, social media also facilitates the rapid diffusion of rumors. Current studies have examined why individuals post or transmit rumors on social media. However, investigating factors ...
متن کاملLessons Learned from the Use of Social Media in Combating a Crisis: a Case Study of 2011 Thailand Flooding Disaster
Social media have played integral roles in many crises around the world. Thailand faced severe floods between July 2011 and January 2012, when more than 13.6 million people were affected. This 7-month disaster provides a great opportunity to understand the use of social media for managing a crisis project before, during, and after its occurrence. However, current literature lacks a theoretical ...
متن کاملA Linguistically-driven Approach to Cross-Event Damage Assessment of Natural Disasters from Social Media Messages
This work focuses on the analysis of Italian social media messages for disaster management and aims at the detection of messages carrying critical information for the damage assessment task. A main novelty of this study consists in the focus on out-domain and cross-event damage detection, and on the investigation of the most relevant tweet-derived features for these tasks. We devised different ...
متن کاملSocial media for the emergency manager in disaster planning and response
This practitioner paper outlines some of the benefits for the use of social media, from the perspective of a locallevel or county-level emergency manager (EM). As compared to state and national level emergency management, because local level EMs have limited manpower and resources, social media can positively or negatively impact the effectiveness of communication before, during and after disas...
متن کامل