Social network aggregation

Wet Markets and Food Safety: TripAdvisor for Improved Global Digital Surveillance

Martin Mathias Müller, Sharada Prasanna Mohanty

Background: Wet markets are markets selling fresh meat and produce. Wet markets are critical for food security and sustainable development in their respective regions. Due to their cultural significance, they attract numerous visitors and consequently gene ...

2019

Comparing the Predictive Capability of Social and Interest Affinity for Recommendations

Karl Aberer, Anne-Marie Kermarrec, Alexandra Olteanu

The advent of online social networks created new prediction opportunities for recommender systems: instead of relying on past rating history through the use of collaborative filtering (CF), they can leverage the social relations among users as a predictor ...

Springer-Verlag Berlin2014

A Federated Recommender System for Online Learning Environments

Denis Gillet, Christophe Salzmann, Lei Zhou, Laurent Moccozet

From e-commerce to social networking sites, recommender systems are gaining more and more interest. They provide connections, news, resources, or products of interest. This paper presents a federated recommender system, which exploits data from different o ...

Springer Berlin Heidelberg2012

Contextual Spaces with Functional Skins as OpenSocial Extension

Denis Gillet, Christophe Salzmann, Evgeny Bogdanov

Portability, flexibility and extensibility are essential features of social media platforms. When such Web platforms are able to take user's context into account, they provide better user experience and enhance the effectiveness of users' actions. In this ...

2011

Object-based Tag Propagation for Semi-automatic Annotation of Images

Touradj Ebrahimi, Jong Seok Lee, Lutz Goldmann, Péter Vajda, Ivan Ivanov

Over the last few years, social network systems have greatly increased users’ involvement in online content creation and annotation. Since such systems usually need to deal with a large amount of multimedia data, it becomes desirable to realize an interact ...

2010

Outtweeting the Twitterers - Predicting Information Cascades in Microblogs

Karl Aberer, Zoran Despotovic, Dipanjan Chakraborty, Wojciech Galuba

Microblogging sites are a unique and dynamic Web 2.0 communication medium. Understanding the information flow in these systems can not only provide better insights into the underlying sociology, but is also crucial for applications such as content ranking, ...

2010

Personalized information access in a wiki using structured tagging

Karl Aberer

Environmental engineers from different organizations work in interdisciplinary projects having the need of information exchange. In particular, a collaborative environment with personalized access to information is needed, which supports strongly varying i ...

Springer-Verlag New York, Ms Ingrid Cunningham, 175 Fifth Ave, New York, Ny 10010 Usa2007