Multimedia proxy plays an important role in media streaming applications. In this paper, we propose an architecture for multimedia proxy across wireless Internet. By considering multiple objectives of multimedia proxy, we design a unified cost metric to measure proxy performance in wireless Internet. Furthermore, we propose a cost-based replacement policy for wireless Internet to improve the pe...

We explore the limits of petitions and public protests as mechanisms to aggregate dispersed information. We show that if citizens’ signals are not sufficiently precise, information aggregation is impossible, even if the conflict with the policy-maker is small, no matter how large is the population of informed citizens. We characterize the conditions on conflict and the signal structure that gua...

The paper discusses opportunities and challenges of social media and social media analytics for the purpose of policy and decision making. The EU-FP7 ICT project UniteEurope is presented as an innovative on-going research and development project that combines the expertise and perspectives of technical practitioners, researchers and policy makers for elaborating a scientifically based social me...