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Related publications (33)

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Kodak Moments and Flickr Diamonds: How Users Shape Large-scale Media

Daniel Gatica-Perez, Radu Andrei Negoescu

In today's age of digital multimedia deluge, a clear understanding of the dynamics of online communities is capital. Users have abandoned their role of passive consumers and are now the driving force behind large-scale media repositories, whose dynamics an ...

Idiap2010

Modeling and Understanding Flickr Communities through Topic-based Analysis

Daniel Gatica-Perez, Radu Andrei Negoescu

With the increased presence of digital imaging devices there also came an explosion in the amount of multimedia content available online. Users have transformed from passive consumers of media into content creators and have started organizing themselves in ...

2010

Social Software for Sustaining Interaction, Collaboration and Learning in Communities of Practice

Denis Gillet, Christophe Salzmann

The École Polytechnique Fédérale de Lausanne is developing a Web 2.0 social software called eLogbook and designed for sustaining interaction, collaboration, and learning in online communities. This chapter describes the 3A model on which eLogbook is based ...

Information Science Reference2009

Synergies of different reputation systems: challenges and opportunities

Karl Aberer

Reputation is a well established means to determine trustworthiness in online systems in various contexts, e.g. online transactions, product recommendation, e-mail spam fighting, etc. However, typically these reputation systems are "closed" outside of the ...

IEEE Computer Society2009

Topickr: Flickr Groups and Users Reloaded

Daniel Gatica-Perez, Radu Andrei Negoescu

ACM2008

Topickr: Flickr Groups and Users Reloaded

Daniel Gatica-Perez, Radu Andrei Negoescu

IDIAP2008

Open source corporate strategy (OSCS)

Juan Andrei Villarroel Fernandez

This doctoral dissertation defines and sheds light on a nascent phenomenon in management, informally referred to as "crowdsourcing". I term this concept Open Source Corporate Strategy, or OSCS, which borrows insights from the open source innovation literat ...

EPFL2008

Truthful reputation mechanisms for online systems

Radu Jurca

The internet is moving rapidly towards an interactive milieu where online communities and economies gain importance over their traditional counterparts. While this shift creates opportunities and benefits that have already improved our day-to-day life, it ...

EPFL2007

Building trust-aware P2P systems

Zoran Despotovic

This thesis is concerned with enabling e-commerce applications in decentralized environments, P2P networks in particular. The work goes along the following two dimensions: P2P reputation systems design and building P2P e-commerce services and applications. ...

EPFL2005

The essence of P2P: A reference architecture for overlay networks

Karl Aberer, Manfred Hauswirth, Sarunas Girdzijauskas

The success of the peer-to-peer idea has created a huge diversity of approaches. A wide variety of structures and architectures have been proposed. The terminology and abstractions used, however, are quite confusing since the P2P paradigm has interested re ...

2005