C
Cristiano Costa
Researcher at Universidade Federal de Minas Gerais
Publications - 6
Citations - 265
Cristiano Costa is an academic researcher from Universidade Federal de Minas Gerais. The author has contributed to research in topics: Interactivity & Reputation system. The author has an hindex of 5, co-authored 6 publications receiving 263 citations.
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Proceedings ArticleDOI
Analyzing client interactivity in streaming media
Cristiano Costa,Italo Cunha,Alex Fernando Borges,Claudiney V. Ramos,Marcus Rocha,Jussara M. Almeida,Berthier Ribeiro-Neto +6 more
TL;DR: This paper provides an extensive analysis of pre-stored streaming media workloads, focusing on the client interactive behavior, to identify qualitative similarities and differences in the typical client behavior for the three workload classes and to provide data for generating realistic synthetic workloads.
Proceedings ArticleDOI
Reputation Systems for Fighting Pollution in Peer-to-Peer File Sharing Systems
Cristiano Costa,J. Almeida +1 more
TL;DR: The results show that the new hybrid system proposed is much more effective and robust to malicious actions than any individual strategy, even in very uncooperative and unreliable peer communities.
Proceedings ArticleDOI
Fighting pollution dissemination in peer-to-peer networks
TL;DR: This paper proposes Scrubber, a new descentralized peer reputation system that imposes severe and quick punishment to content polluters but also promotes peer rehabilitation.
Proceedings ArticleDOI
Impact of peer incentives on the dissemination of polluted content
Fabrício Benevenuto,Cristiano Costa,Marisa Vasconcelos,Virgilio Almeida,Jussara M. Almeida,Miranda Mowbray +5 more
TL;DR: The simulation results show that for a pollution dissemintation techinique called hash corruption, only effective incentive mechanisms are able to avoid spreading of polluted content.
Proceedings ArticleDOI
GENIUS: a generator of interactive user media sessions
TL;DR: In this paper, a hierarchical model that captures key aspects of media user behavior and workloads, in particular, interactivity and heterogeneity, is proposed to generate realistic interactive streaming media workloads.