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Each year, natural disasters cause severe damage to infrastructure and lead to significant losses of human lives. Non-governmental organizations (NGOs) and activists use social media networks to disseminate and organize relief efforts, but are often unable to efficiently gather volunteers and resources. Harnessing the power of crowdsourced social media services (e.g. Twitter, Facebook, Google+), we...
The growing interest of our society for health issues and physical activities is reflected on social media services where people share information about their daily activities and accomplishments. Fitness activities has become a routine present in many people's daily activities. Previous studies have analyzed people commitment to enhance their lifestyle and reach health objectives using data published...
In universities worldwide, instructors may spend a significant amount of time reviewing homework and group projects submitted by their students. Web-based technologies, like Google Docs, have provided a platform for students to write documents collaboratively. Currently, those platforms provide limited information on the individual contribution made by each student. Previous studies have focused on...
Citizens engage in online discussions with more frequency each day producing content relevant locally and globally. Finding influencers, who drive the agenda of such content on Twitter, has become a challenging task. An important factor that boosts the user influence is the geographic proximity with his peers [1]. Based on this finding from previous work, we propose ProximityRank, an extension of...
The popularity of social networks, such as Twitter, have provided users around the world the ability to share information, express opinions or sentiments about any topic. Twitter has become the preferred social network platform used by researchers for measuring popularity or influence of users in social networks. This study seeks to extend analysis of influential users in the spatial context of Ecuador,...
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