<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Hadrien Hours</style></author><author><style face="normal" font="default" size="100%">Ernst Biersack</style></author><author><style face="normal" font="default" size="100%">Patrick Loiseau</style></author><author><style face="normal" font="default" size="100%">Alessandro Finamore</style></author><author><style face="normal" font="default" size="100%">Marco Mellia</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">A Study of the Impact of DNS Resolvers on Performance Using a Causal Approach</style></title><secondary-title><style face="normal" font="default" size="100%">Internet Teletraffic Congress</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">DNS</style></keyword><keyword><style  face="normal" font="default" size="100%">reasoner</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2015</style></year><pub-dates><date><style  face="normal" font="default" size="100%">08/2015</style></date></pub-dates></dates><pub-location><style face="normal" font="default" size="100%">Ghent, Belgium</style></pub-location><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">For a user to access any resource on the Internet, it is necessary to first locate a server hosting the requested resource. The Domain Name System service (DNS) represents the first step in this process, translating a human readable name, the resource host name, into an IP address. With the expansion of Content Distribution Networks (CDNs), the DNS service has seen its importance increase. In a CDN, objects are replicated on different servers to decrease the distance from the client to a server hosting the object that needs to be accessed. The DNS service should improve user experience by directing its demand to the optimal CDN server. While most of the Internet Service Providers (ISPs) offer a DNS service to their customers, it is now common to see clients using a public DNS service instead. This choice may have an impact on Web browsing performance. In this paper we study the impact of choosing one DNS server instead of another and we compare the performance of a large European ISP DNS service with the one of a public DNS service, Google DNS. We propose a causal approach to expose the structural dependencies of the different parameters impacted by the DNS service used and we show how to model these dependencies with a Bayesian network. This model allows us to explain and quantify the benefits obtained by clients using their ISP DNS service and to propose a solution to further improve their performance.</style></abstract></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>27</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Umberto Manferdini</style></author><author><style face="normal" font="default" size="100%">Stefano Traverso</style></author><author><style face="normal" font="default" size="100%">Marco Mellia</style></author><author><style face="normal" font="default" size="100%">Edion Tego</style></author><author><style face="normal" font="default" size="100%">Francesco Matera</style></author><author><style face="normal" font="default" size="100%">Zied Ben Houidi</style></author><author><style face="normal" font="default" size="100%">Marco Milanesio</style></author><author><style face="normal" font="default" size="100%">Pietro Michiardi</style></author><author><style face="normal" font="default" size="100%">Dario Rossi</style></author><author><style face="normal" font="default" size="100%">D. Cicalese</style></author><author><style face="normal" font="default" size="100%">D. Joumblatt</style></author><author><style face="normal" font="default" size="100%">Jordan Augé</style></author><author><style face="normal" font="default" size="100%">Maurizio Dusi</style></author><author><style face="normal" font="default" size="100%">Sofia Nikitaki</style></author><author><style face="normal" font="default" size="100%">Mohamed Ahmed</style></author><author><style face="normal" font="default" size="100%">Ilias Leontiadis</style></author><author><style face="normal" font="default" size="100%">L. Baltrunas</style></author><author><style face="normal" font="default" size="100%">M. Varvello</style></author><author><style face="normal" font="default" size="100%">Pedro Casas</style></author><author><style face="normal" font="default" size="100%">Alessandro D'Alconzo</style></author><author><style face="normal" font="default" size="100%">Benoit Donnet</style></author><author><style face="normal" font="default" size="100%">W. Du</style></author><author><style face="normal" font="default" size="100%">Guy Leduc</style></author><author><style face="normal" font="default" size="100%">Y. Liao</style></author><author><style face="normal" font="default" size="100%">Alessandro Capello</style></author><author><style face="normal" font="default" size="100%">Fabrizio Invernizzi</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%"> Cross-check of Analysis Modules and Reasoner Interactions</style></title></titles><keywords><keyword><style  face="normal" font="default" size="100%">reasoner</style></keyword><keyword><style  face="normal" font="default" size="100%">WP4</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2014</style></year><pub-dates><date><style  face="normal" font="default" size="100%">10/2014</style></date></pub-dates></dates><number><style face="normal" font="default" size="100%">D4.3</style></number><language><style face="normal" font="default" size="100%">eng</style></language><work-type><style face="normal" font="default" size="100%">Deliverable</style></work-type></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>27</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Pedro Casas</style></author><author><style face="normal" font="default" size="100%">Alessandro D'Alconzo</style></author><author><style face="normal" font="default" size="100%">Maurizio Dusi</style></author><author><style face="normal" font="default" size="100%">Sofia Nikitaki</style></author><author><style face="normal" font="default" size="100%">Mohamed Ahmed</style></author><author><style face="normal" font="default" size="100%">Stefano Traverso</style></author><author><style face="normal" font="default" size="100%">Marco Mellia</style></author><author><style face="normal" font="default" size="100%">Daniele Apiletti</style></author><author><style face="normal" font="default" size="100%">Luigi Grimaudo</style></author><author><style face="normal" font="default" size="100%">Elena Baralis</style></author><author><style face="normal" font="default" size="100%">Dario Rossi</style></author><author><style face="normal" font="default" size="100%">D. Joumblatt</style></author><author><style face="normal" font="default" size="100%">Alessandro Capello</style></author><author><style face="normal" font="default" size="100%">M. D'Ambrosio</style></author><author><style face="normal" font="default" size="100%">Fabrizio Invernizzi</style></author><author><style face="normal" font="default" size="100%">M. Ullio</style></author><author><style face="normal" font="default" size="100%">Andrea Fregosi</style></author><author><style face="normal" font="default" size="100%">Eike Kowallik</style></author><author><style face="normal" font="default" size="100%">Stefano Raffaglio</style></author><author><style face="normal" font="default" size="100%">Andrea Sannino</style></author><author><style face="normal" font="default" size="100%">Marco Milanesio</style></author><author><style face="normal" font="default" size="100%">Edion Tego</style></author><author><style face="normal" font="default" size="100%">Francesco Matera</style></author><author><style face="normal" font="default" size="100%">Tivadar Szemethy</style></author><author><style face="normal" font="default" size="100%">Balazs Szabo</style></author><author><style face="normal" font="default" size="100%">L. Németh</style></author><author><style face="normal" font="default" size="100%">Zied Ben Houidi</style></author><author><style face="normal" font="default" size="100%">G. Dimopoulos</style></author><author><style face="normal" font="default" size="100%">Ilias Leontiadis</style></author><author><style face="normal" font="default" size="100%">Yan Grunenberger</style></author><author><style face="normal" font="default" size="100%">L. Baltrunas</style></author><author><style face="normal" font="default" size="100%">Michael Faath</style></author><author><style face="normal" font="default" size="100%">Rolf Winter</style></author><author><style face="normal" font="default" size="100%">Dimitri Papadimitriou</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Design of the Reasoner</style></title><short-title><style face="normal" font="default" size="100%">D4.2</style></short-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">design</style></keyword><keyword><style  face="normal" font="default" size="100%">private deliverable</style></keyword><keyword><style  face="normal" font="default" size="100%">reasoner</style></keyword><keyword><style  face="normal" font="default" size="100%">WP4</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2014</style></year><pub-dates><date><style  face="normal" font="default" size="100%">06/2014</style></date></pub-dates></dates><number><style face="normal" font="default" size="100%">D4.2</style></number><language><style face="normal" font="default" size="100%">eng</style></language><work-type><style face="normal" font="default" size="100%">report</style></work-type></record></records></xml>