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Browsing CAS: Computer Science: Technical Reports by Title

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Browsing CAS: Computer Science: Technical Reports by Title

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  • Carter, Bob; Park, Kihong (Boston University Computer Science Department, 1994-11-10)
    In this paper, we study the efficacy of genetic algorithms in the context of combinatorial optimization. In particular, we isolate the effects of cross-over, treated as the central component of genetic search. We show that ...
  • Guirguis, Mina; Bestavros, Azer; Matta, Ibrahim (Boston University Computer Science Department, 2003-05-16)
    We postulate that exogenous losses-which are typically regarded as introducing undesirable "noise" that needs to be filtered out or hidden from end points-can be surprisingly beneficial. In this paper we evaluate the effects ...
  • Fayed, Marwan; Krapivsky, Paul; Byers, John; Finkel, David; Redner, Sid; Crovella, Mark (Boston University Computer Science Department, 2003-03-01)
    Recent studies have noted that vertex degree in the autonomous system (AS) graph exhibits a highly variable distribution [15, 22]. The most prominent explanatory model for this phenomenon is the Barabási-Albert (B-A) model ...
  • Almeida, Virgílio; de Oliveira, Adriana (Boston University Computer Science Department, 1996-02-05)
    The World Wide Web (WWW or Web) is growing rapidly on the Internet. Web users want fast response time and easy access to a enormous variety of information across the world. Thus, performance is becoming a main issue in the ...
  • Lakhina, Anukool; Byers, John W.; Crovella, Mark; Matta, Ibrahim (Boston University Computer Science Department, 2002)
    One relatively unexplored question about the Internet's physical structure concerns the geographical location of its components: routers, links and autonomous systems (ASes). We study this question using two large inventories ...
  • Guirguis, Mina; Bestavros, Azer; Matta, Ibrahim (Boston University Computer Science Department, 2006-02-06)
    Recent research have exposed new breeds of attacks that are capable of denying service or inflicting significant damage to TCP flows, without sustaining the attack traffic. Such attacks are often referred to as "low-rate" ...
  • Esposito, Flavio; Matta, Ibrahim; Bera, Debajyoti; Michiardi, Pietro (CS Department, Boston University, 2010-10-15)
    In a content distribution (file sharing) scenario, the initial phase is delicate due to the lack of global knowledge and the dynamics of the overlay. An unwise piece dissemination in this phase can cause delays in reaching ...
  • Yates, David J.; Almeida, Virgílio; Almeida, Jussara M. (Boston University Computer Science Department, 1997-07-16)
    This paper examines how and why web server performance changes as the workload at the server varies. We measure the performance of a PC acting as a standalone web server, running Apache on top of Linux. We use two important ...
  • Erramilli, Vijay; Matta, Ibrahim; Bestavros, Azer (Boston University Computer Science Department, 2004-06-18)
    Wireless sensor networks are characterized by limited energy resources. To conserve energy, application-specific aggregation (fusion) of data reports from multiple sensors can be beneficial in reducing the amount of data ...
  • Mattar, Karim; Sridharan, Ashwin; Zang, Hui; Matta, Ibrahim; Bestavros, Azer (Boston University Computer Science Department, 2006-06-06)
    In this work, we conducted extensive active measurements on a large nationwide CDMA2000 1xRTT network in order to characterize the impact of both the Radio Link Protocol and more importantly, the wireless scheduler, on ...
  • Fonseca, Rodrigo; Almeida, Virgílio; Crovella, Mark; Abrahão, Bruno (Boston University Computer Science Department, 2002-08-13)
    There has been considerable work done in the study of Web reference streams: sequences of requests for Web objects. In particular, many studies have looked at the locality properties of such streams, because of the impact ...
  • Bedford, Paul; Bestavros, Azer; Byers, John; Crovella, Mark (Boston University Computer Science Department, 2000-07-03)
    The cost and complexity of deploying measurement infrastructure in the Internet for the purpose of analyzing its structure and behavior is considerable. Basic questions about the utility of increasing the number of ...
  • Medina, Alberto; Matta, Ibrahim; Byers, John (Boston University Computer Science Department, 2000-01-21)
    Recent empirical studies have shown that Internet topologies exhibit power laws of the form for the following relationships: (P1) outdegree of node (domain or router) versus rank; (P2) number of nodes versus outdegree; ...
  • Gursun, Gonca; Matta, Ibrahim; Mattar, Karim (Boston University Computer Science Department, 2009-04-17)
    We revisit the problem of connection management for reliable transport. At one extreme, a pure soft-state (SS) approach (as in Delta-t [9]) safely removes the state of a connection at the sender and receiver once the state ...
  • Homer, Steven; Peinado, Marcus (Boston University Computer Science Department, 1994)
    The performance of a randomized version of the subgraph-exclusion algorithm (called Ramsey) for CLIQUE by Boppana and Halldorsson is studied on very large graphs. We compare the performance of this algorithm with the ...
  • Park, Kihong; Kim, Gitae; Crovella, Mark (Boston University Computer Science Department, 1996-08-07)
    Recent measurements of local-area and wide-area traffic have shown that network traffic exhibits variability at a wide range of scales self-similarity. In this paper, we examine a mechanism that gives rise to self-similar ...
  • Yilmaz, Selma; Matta, Ibrahim (Boston University Computer Science Department, 2002)
    MPLS (Multi-Protocol Label Switching) has recently emerged to facilitate the engineering of network traffic. This can be achieved by directing packet flows over paths that satisfy multiple requirements. MPLS has been ...
  • Fayed, Marwan; Krapivsky, Paul; Byers, John; Crovella, Mark; Finkel, David; Redner, Sid (Boston University Computer Science Department, 2003-01-17)
    This paper explores reasons for the high degree of variability in the sizes of ASes that have recently been observed, and the processes by which this variable distribution develops. AS size distribution is important for a ...
  • Donnelly, Kevin; Kfoury, Assaf (Boston University Computer Science Department, 2008-02-05)
    Interdomain routing on the Internet is performed using route preference policies specified independently, and arbitrarily by each Autonomous System in the network. These policies are used in the border gateway protocol ...
  • Medina, Alberto; Gursun, Gonca; Basu, Prithwish; Matta, Ibrahim (CS Department, Boston University, 2010-05-14)
    Mobility models have traditionally been tailored to specific application domains such as human, military, or ad hoc transportation scenarios. This tailored approach often renders a mobility model useless when the application ...

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