Everyday video-sharing websites such as YouTube collect large amounts of new multimedia resources. Comments left by viewers often provide valuable information to describe sentiments, opinions and tastes of users. For this reason, we propose a novel re-ranking approach that takes into consideration that information in order to provide better recommendations of related videos. Early experiments i...

The evolution of opinions in a population of individuals who constantly interact with a common source of user-generated content (i.e. the internet) and are also subject to propaganda is analyzed using computer simulations. The model is based on the bounded confidence approach. In the absence of propaganda, computer simulations show that the online population as a whole is either fragmented, pol...

Hemali Padalia, Pooja Moteriya, Yogesh Baravalia and Sumitra Chanda* 1 Phytochemical, Pharmacological and Microbiological Laboratory, Department of Biosciences (UGC-CAS), Saurashtra University, Rajkot-360005, Gujarat, India 2 Phytochemical, Pharmacological and Microbiological Laboratory, Department of Biochemistry, Saurashtra University, Rajkot-360005, Gujarat, India * Corresponding author: ema...

Streams of user-generated content in social media exhibit patterns of collective attention across diverse topics, with temporal structures determined both by exogenous factors and endogenous factors. Teasing apart different topics and resolving their individual, concurrent, activity timelines is a key challenge in extracting knowledge from microblog streams. Facing this challenge requires the u...

Hosted by: The Claude Shannon Institute for Discrete Mathematics, Coding, Cryptography and Information Security, The Boole Centre for Research in Informatics, UCC School of Engineering, UCC School of Mathematical Sciences, UCC

When contributing content on large online platforms, producers of user-generated content have to decide where to contribute. On a complex and dynamic platform like Wikipedia, this decision is expected to depend on the way the content is organized. We analyse whether the hyperlinks on Wikipedia channel the attention of producers towards more central articles. We observe a sample 7, 635 articles ...

Interactive online help systems are considered to be a fruitful supplement to traditional IT helpdesks, which are often overloaded. They often comprise user-generated FAQ collections playing the role of technology-based conceptual artifacts. Two main questions arise: how the conceptual artifacts should be used, and which factors influence their acceptance in a community of practice (CoP). First...

Illegal distribution of user-generated pornography (UGP) videos raises lots of negative aspects associated with the digital contents. This paper proposes a first forensic technique to detect UGP video. To discriminate UGP videos, we exploit shot based sensor pattern noise (SPN) from an image under investigation. By thresholding average peakto-correlation (PCE) values from the shot based SPNs, t...

The continuous growth of social networks and the active use of social media services result in massive amounts of user-generated data. More and more people worldwide report and distribute up-to-date information about almost any topic. Therefore, we argue that this kind of data is a good basis to observe ongoing situations in cities as well as related situations from outside about these cities i...

The growing popularity of social networks such as Facebook and LinkedIn demonstrates how the internet is changing; users are no longer simply downloading static data, but are increasingly uploading and sharing content among themselves, leading to a proliferation of social networks and other user-generated content sites (Harris & Rae, 2009). Li and Bernoff (2008) refer to this basic transfer of ...