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Price-based call admission control in a single DiffServ domain
(2002)TIK ReportWe consider the problem of scalable call admission control (CAC) in a DiffServ network and propose a new CAC scheme. Initially, a certain fraction of the bandwidth of the network is reserved for admission-controlled traffic, and this reservation is carried out according to the hose model, a model that had previously been proposed for VPN provisioning. With this architecture, admission control can be carried out at edge routers without any ...Report -
PISA - a platform and programming language independent interface for search algorithms
(2002)TIK ReportThis paper introduces a text based interface (PISA) that allows to separate the algorithm-specific part of an optimizer from the application-specific part. These parts are implemented as independent programs forming freelycombinable modules. It is therefore possible to provide these modules as ready-to-use packages. As a result, an application engineer can easilyexchange the optimization method and trydifferent variants, while an algorithm ...Report -
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Picture metadata and its associations: using web technologies for representing semantics
(2002)TIK ReportWeb technologies today go far beyond simply enabling the creation of Web pages. XML and metadata formats based on it make it possible to manage metadata in a powerful and flexible way. In this paper, we describe the concept and the prototype of an application for the management of metadata for a specific domain, metadata associated with pictures. The goal of the paper is to highlight the benefits which result from employing Web technologies ...Report -
Peer-to-peer overlay network management through AGILE: An adaptive, group-of-interest-based lookup engine
(2002)TIK ReportPeer-to-peer (P2P) systems enable the direct communica tion between peers, which offer or request for services, resources, or content. While distributed peer to-peer lookup services define the most important function in P2P systems, scalability and efficiency are key for those services. Currently, state of the art mechanisms actively create and manage a peer application layer overlay network to achieve this goal. The proposed mechanism ...Report -
A proposal for an XLink data model
(2002)TIK ReportThis report describes a proposal for a data model for XLink. It defines the data model as contributions of XLink to the XML Infoset. The data model is meant as a clarification of the link model implicitly defined by XLink. It is also meant as the foundation for future work on XLink, for example a DOM module for XLink support, a CSS module for styling XLinks, or a protocol for accessing XLink linkbases.Report -
Call admission control for advance reservation requests with alternatives
(2002)TIK ReportCall admission control is the problem of deciding for a given set of connection requests which of them to accept and which to reject, with the goal of maximizing the profit obtained from the accepted requests. The problem is considered in a scenario with advance reservations where users can specify several alternatives for when and how they want their connections to be established. Two variants are studied: In BCA (batch call admission), ...Report -
Double digest revisited
(2002)Technical Report / ETH Zurich, Department of Computer ScienceReport -