Global ETD Search

1	Búsqueda de recursos en redes peer-to-peer totalmente descentralizadas basada en redes neuronales artificiales Corbalán, Leonardo César 11 November 2014 (has links) Las redes Peer-to-Peer (P2P) puras no estructuradas como Gnutella, dónde los nodos se conectan entre sí como pares o iguales, sin roles diferenciados ni jerarquías de ninguna clase, son sistemas distribuidos, dinámicos, sin punto alguno de centralización, que favorecen la robustez y tolerancia a fallos. Sin embargo, la búsqueda de recursos en estos sistemas constituye un problema esencial. El algoritmo de búsqueda BFS de Gnutella genera gran cantidad de tráfico dificultando su escalabilidad. Esta tesis propone un nuevo algoritmo de búsqueda denominado Búsqueda Inteligente Incremental P2P (BII-P2P) en el que los nodos, asistidos por sus redes neuronales locales, propagan selectivamente las solicitudes de búsquedas sólo al subconjunto más apropiado de vecinos. Así se mejora significativamente el algoritmo de Gnutella consiguiendo mayor porcentaje de hallazgos con menor cantidad de tráfico generado sobre la red P2P. El rendimiento de este algoritmo de búsqueda inteligente se ve potenciado por una conveniente estrategia de exploración incremental. Neural nets Algorithms P2P Gnutella Informática
2	TRAFFIC EFFECT OF BROADCAST ON LARGE PEER-TO-PEER NETWORKS-A CASE STUDY OF THE GNUTELLA HUANG, YANMU 11 March 2002 (has links) No description available. Computer Science gnutella power law small-world traffic congestion
3	A JAVA FRAMEWORK FOR COLLABORATIVE SERVICE SHARING IN P2P NETWORK GODBOLE, KEDAR VIJAY January 2003 (has links) No description available. Computer Science peer to peer P2P service SOA distributed Gnutella
4	Einführung in P2P-Netzwerke / introduction into peer-to-peer-networks Merzky, Alexander 13 May 2002 (has links) The types of communication (central, semi-central, peripheral) Specification of the gnutella-protocol (PING, PONG, QUERY, QUERY-HIT, PUSH - packets) The graphical user interface Limewire and its class structure / Gemeinsamer Workshop von Universitaetsrechenzentrum und Professur Rechnernetze und verteilte Systeme der Fakultaet fuer Informatik der TU Chemnitz. Vergleich zentrale, semizentrale und dezentrale Kommunikation, Spezifikation eines P2P-Protokolls des Gnutella-Netzes (PING, PONG, QUERY, QUERY-HIT, PUSH - Pakete) Die graphische Oberflaeche Limewire und deren Struktur Dezentrale Kommunikation Gnutella Limewire ddc:004 Peer-to-Peer-Netz Protokoll
5	Einführung in P2P-Netzwerke Merzky, Alexander 13 May 2002 (has links) The types of communication (central, semi-central, peripheral) Specification of the gnutella-protocol (PING, PONG, QUERY, QUERY-HIT, PUSH - packets) The graphical user interface Limewire and its class structure / Gemeinsamer Workshop von Universitaetsrechenzentrum und Professur Rechnernetze und verteilte Systeme der Fakultaet fuer Informatik der TU Chemnitz. Vergleich zentrale, semizentrale und dezentrale Kommunikation, Spezifikation eines P2P-Protokolls des Gnutella-Netzes (PING, PONG, QUERY, QUERY-HIT, PUSH - Pakete) Die graphische Oberflaeche Limewire und deren Struktur info:eu-repo/classification/ddc/004 ddc:004 Peer-to-Peer-Netz Protokoll Dezentrale Kommunikation Gnutella Limewire
6	Modeling Large-scale Peer-to-Peer Networks and a Case Study of Gnutella Jovanovic, Mihajlo A. 11 October 2001 (has links) No description available. Computer Science network modeling peer-to-peer topology discovery short-circuiting small-world power-laws Gnutella
7	Gnutella Network Traffic : Measurements and Characteristics / Gnutella Nätverkstrafik : Mätningar och Karakteristik Ilie, Dragos January 2006 (has links) Wide availability of computing resources at the edge of the network has lead to the appearance of new services based on peer-to-peer architectures. In a peer-to-peer network nodes have the capability to act both as client and server. They self-organize and cooperate with each other to perform more efficiently operations related to peer discovery, content search and content distribution. The main goal of this thesis is to obtain a better understanding of the network traffic generated by Gnutella peers. Gnutella is a well-known, heavily decentralized file-sharing peer-to-peer network. It is based on open protocol specifications for peer signaling, which enable detailed measurements and analysis down to individual messages. File transfers are performed using HTTP. An 11-days long Gnutella link-layer packet trace collected at BTH is systematically decoded and analyzed. Analysis results include various traffic characteristics and statistical models. The emphasis for the characteristics has been on accuracy and detail, while for the traffic models the emphasis has been on analytical tractability and ease of simulation. To the author's best knowledge this is the first work on Gnutella that presents statistics down to message level. The results show that incoming requests to open a session follow a Poisson distribution. Incoming messages of mixed types can be described by a compound Poisson distribution. Mixture distribution models for message transfer rates include a heavy-tailed component. / http://www.its.bth.se/staff/dil/ Gnutella P2P network traffic measurements statistical models Telecommunications Telekommunikation Computer Sciences Datavetenskap (datalogi) Probability Theory and Statistics Sannolikhetsteori och statistik
8	Distribution multi-contenus sur Internet / Content distribution over Internet Mnie Filali, Imane 27 September 2016 (has links) Dans cette thèse, nous nous sommes intéressés aux protocoles pair-à-pair (P2P), qui représentent une solution prometteuse pour la diffusion et le partage de données à faible coût sur Internet. Nous avons mené, dans un premier temps, une étude comportementale de différents protocoles P2P pour le partage de fichier (distribution de contenus sans contrainte de temps) puis le live. Dans la première étude centréesur le partage de fichier, nous avons montré l’impact d’Hadopi sur le comportement des utilisateurs et discuté l’efficacité des protocoles en fonction du contenu et l’efficacité protocolaire, en se basant sur les choix des utilisateurs. BitTorrent s’est nettement démarqué au cours de cette étude, notamment pour les grands contenus. En ce qui concerne le live, nous nous sommes intéressés à la qualité de servicedu réseau de distribution live Sopcast, car plus de 60% des événements live diffusés en P2P le sont sur ce réseau. Notre analyse approfondie de ces deux modes de distribution nous a fait nous recentrer sur BitTorrent, qui est à la base de tous les protocoles P2P Live, et est efficace en partage de fichier et complètement open source. Dans la seconde partie de la thèse, nous avons proposé et implémenté dansun environnement contrôlé un nouveau protocole sur la base de BitTorrent avec des mécanismes protocolaires impliquant tous les pairs dans la gestion du réseau. Ces nouveaux mécanismes permettent d’augmenter l’efficacité du protocole via une meilleure diffusion, tant pour le live que le partage de fichier, de métadonnées (la pièce la plus rare) et via une méthode dite de push, par laquelle un client va envoyer du contenu aux pairs les plus dans le besoin / In this study, we focused on peer-to-peer protocols (P2P), which represent a promising solution for data dissemination and content delivery at low-cost in the Internet. We performed, initially, a behavioral study of various P2P protocols for file sharing (content distribution without time constraint) and live streaming. Concerning file sharing, we have shown the impact of Hadopi on users’ behavior and discussed the effectiveness of protocols according to content type, based on users’ choice. BitTorrent appeared as the most efficient approach during our study, especially when it comes to large content. As for streaming, we studied the quality of service of Sopcast, a live distribution network that accounts for more than 60% of P2P broadcast live events. Our in-depth analysis of these two distributionmodes led us to focus on the BitTorrent protocol because of its proven efficiency in file sharing and the fact that it is open source. In the second part of the thesis, we proposed and implemented a new protocol based on BitTorrent, in a controlled environment. The modifications that we proposed allow to increase the efficiency of the protocol through improved dissemination of metadata (the rarest piece), both for live and file sharing. An enhanced version is introduced with a push method, where nodes that lag behind receive an extra service so as to improve the overall performance Réseaux P2P Protocole P2P Performance protocole Loi anti-piraterie Partage de fichier Partage de données Partage de ressources Qualité des métadonnées Pair actif Pair intelligent Gestion collaborative Gestion réseau Sécurité réseau Vision locale Vision globale BitTorrent Sopcast EDonkey Gnutella Peer-to-peer computing P2P network approach P2P Protocols Protocols performance Protocol efficiency Anti-piracy laws File sharing Streaming Live sharing Data sharing Ressources sharing Meta-data quality Collaborative management Active peer Peer intelligent Network management Network security Local vision Global vision BitTorrent EDonkey Sopcast Gnutella

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