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A combinatorial approach to content-based music selection

A combinatorial approach to content-based music selection

引用

IEEE International conference on multimedia computing and Systems (ICMCS)

作者： F. Pachet P. Roy D. Cazaly Sony CSL Paris Paris France LIP6 University of Paris 6 Paris France Sony Music France Paris France

Advances in networking and transmission of digital multimedia data will soon bring huge catalogues of music to users. Accessing these catalogues raises a problem for users and content providers, that we define as the music selection problem. We introduce three main goals to be satisfied in music selection: match user preferences, provide users with new music, and exploit the catalogue in an optimal fashion. We propose a novel approach to music selection, based on computing coherent sequences of music titles, and show that this amounts to solving a combinatorial pattern generation problem. We propose constraint satisfaction techniques to solve it. The resulting system is an enabling technology to build better music delivery services.

关键词： Multiple signal classification Electronic mail Databases multimedia systems Transportation Signal processing Protection IP networks Digital audio broadcasting MPEG 7 Standard

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A study on scheduling multiple priority requests in multimedia servers

A study on scheduling multiple priority requests in multimed...

引用

IEEE International conference on multimedia computing and Systems (ICMCS)

作者： I. Kamel T. Niranjan Panasonic Information and Networking Technologies Laboratory Princeton NJ USA Transarc Corporation Pittsburgh PA USA

multimedia servers store a large amount of media data of different format. Different data objects have different real time requirements. We present an empirical study on the performance of disk scheduling in the presence of different media types with different real time requirements. We also argue that using multiple queues to handle different data types is not the best way to handle objects with different priorities. Moreover we argue that using one queue per disk to organize objects with different real time requirements would be more suitable for multimedia server applications. We built a simulation model based on a real video server, PanaViss, produced by Panasonic. The experiments show that using multiple queues respects the priority hierarchy. However, this schema sometimes penalizes utilization of the disk.

关键词： Video on demand Streaming media Scheduling algorithm Network servers Application software Bandwidth multimedia communication Quality of service Intelligent networks Laboratories

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QoS provisioning in wireless multimedia networks

QoS provisioning in wireless multimedia networks

引用

IEEE conference on Wireless Communications and networking

作者： S.K. Das M. Chatterjee N.K. Kakani Center for Research in Wireless Computing (CReW) Department of Computer Science University of North Texas Denton TX USA

The advent of powerful hand-held computers and the desire for communication on the move, are the driving forces behind an emerging technology called mobile computing. Observing the growing demands of roaming users, it has been predicted that the next generation wireless networks will be burdened with the bandwidth-intensive traffic generated by personal multimedia applications. However, the available bandwidth for supporting these applications is still limited, and therefore its proper management is necessary to ensure the required quality of service (QoS) provisioning between the end-systems. We first present a survey of the existing literature on the QoS provisioning for wireless networks, which mainly focus on identifying the technological bottlenecks involved. Then we propose a unified framework to provide a link layer as well as a network layer solution for QoS provisioning. Our framework measures two important QoS parameters, namely the inter-packet delay and the transmission data rate. Experimental results show as high as a 21% improvement in the call admission probability and about a 16% improvement in the hand-off call dropping probability.

关键词： Quality of service Handheld computers Wireless networks Mobile communication Mobile computing Roaming Next generation networking Telecommunication traffic Application software Bandwidth

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Octopus: embracing the energy efficiency of handheld multimedia computers 99

Octopus: embracing the energy efficiency of handheld multime...

引用

Proceedings of the 5th annual ACM/IEEE international conference on Mobile computing and networking

作者： Paul J. M. Havinga Gerard J. M. Smit University of Twente Department of Computer Science The Netherlands

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Hierarchical scheduling for multiple classes of applications in connection-oriented integrated-service networks

Hierarchical scheduling for multiple classes of applications...

引用

IEEE International conference on multimedia computing and Systems (ICMCS)

作者： Shigang Chen K. Nahrstedt Department of Computer Science University of Illinois Urbana-Champaign USA

Multiple classes of conventional and multimedia applications are expected to be supported by the emerging connection-oriented integrated-service networks, where best-effort flows and quality of service (QoS) flows co-exist. We propose a novel two-level hierarchical scheduling algorithm, which provides an integrated, simple scheme to distribute the link bandwidth among a dynamic set of flows in the network, such that: every QoS flow always receives a bandwidth which guarantees the required quality of service; and after the requirements of the QoS flows are satisfied, the rest of the network bandwidth is fairly shared among all best-effort and soft-QoS flows. We extend our hierarchical scheduling algorithm to support both bursty and non-bursty flows. We also discuss the techniques which make the throughput of a QoS flow to be constantly lower bounded and/or upper bounded.

关键词： Quality of service Bandwidth Throughput Scheduling algorithm Contracts Processor scheduling Application software Intelligent networks Computer science Next generation networking

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End-system architecture for distributed networked multimedia applications: issues, trends and future directions

End-system architecture for distributed networked multimedia...

引用

IEEE Pacific Rim conference on Communications, Computers and Signal Processing

作者： A.Z.M.E. Hossain K.F. Li Department of Electrical and Computer Engineering University of Victoria Victoria BC Canada

The emerging broadband computer networks (wired and wireless) are likely to have numerous multimedia applications, such as videoconferencing, interactive games, and collaborative computing standard features in desktop PCs and portables. In recent years there have been significant developments in the field of multimedia coding algorithms and their VLSI implementations along with the development of high speed networking technology (e.g., ATM, FDDI, fast Ethernet). But the end-system architecture (software and hardware) as a whole is lagging behind these advancements. Optimized hardware and software architectures are needed for end systems that will guarantee predictable performance of real-time multimedia applications according to user provided QoS. In this paper, we identify the major end-system hardware and software requirements for networked multimedia applications. Focusing mainly on hardware and operating system levels, we advocate an integrated end-system architecture rather than some ad-hoc solutions for real-time multimedia computing, in addition to general purpose computing in a distributed environment. A core-based system architecture is proposed. We observe that interfacing with high speed networks, inter-device level data transfer, power efficiency and in addition, system resource utilization are some of the issues that need serious consideration in an end-system architecture.

关键词： Computer architecture Hardware Application software Computer networks multimedia computing High-speed networks Real time systems Teleconferencing Games Collaboration

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Orchestra!: a distributed platform for virtual musical groups and music distance learning over the Internet in Java/sup TM/ technology

Orchestra!: a distributed platform for virtual musical group...

引用

IEEE International conference on multimedia computing and Systems (ICMCS)

作者： D. Giuli F. Pirri P. Bussotti Department of Electronic Engineering University of Florence Florence Italy

This paper proposes a platform for musical group sessions over the Internet. It has been conceived as an useful instrument for collaborative music developing and enjoying, both at the professional and at the "amateur" level. It has been designed for music distance learning, as well. The system, that we named "Orchestra!", is based on a distributed software architecture and its services are universally accessible through a simple http-client (a browser) and a sound card. Geographical packet-switched network latencies make it impossible to reach a real musical synchronisation among all members of a virtual group. As an alternative, it has been developed a system of progressive and collaborative elaboration of musical audio streams which is insensitive to delays: this idea permits to reproduce "live" performances as well as recording studio activities.

关键词： Multiple signal classification Computer aided instruction Streaming media Delay Internet Instruments Collaboration Audio recording Music Disruption tolerant networking

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AQuaFWiN: adaptive QoS framework for multimedia in wireless networks and its comparison with other QoS frameworks

AQuaFWiN: adaptive QoS framework for multimedia in wireless ...

引用

conference on Local Computer Networks (LCN)

作者： B. Vandalore R. Jain S. Fahmy S. Dixit Department of Computer and Information Science Ohio State Uinversity Columbus OH USA Department of Computer Sciences Purdue University IN USA Nokia Research Center Burlington MA USA

In a wireless environment, due to topology changes and characteristics of media (interference in radio signals) the bandwidth of a link is unpredictable and possibly very low, the error rates are variable and extremely high. Provisioning and guaranteeing quality of service (QoS) in such an environment is a very challenging problem. In this paper we propose an adaptive and QoS framework to support multimedia applications in a wireless networking environment. The proposed framework is hierarchical in nature with cluster of mobile end hosts connected to a base station, base stations are connected to a supervisory node, which in turn is connected to the wired infrastructure. The changing conditions in wireless due to interference and possibly mobility, entitle that the real-time applications needing stringent QoS should be adaptable. The framework uses a generic feedback mechanism to support adaptability at all layers of the wireless network. An overview of existing wireless architectures which support QoS is given. The architectures discussed are WAMIS (wireless adaptive multimedia information system), SWAN (seamless wireless ATM network), MMWN (multimedia support for mobile wireless networks), and QGMC (QoS guarantees in mobile computing). The proposed approach is compared with these existing methods.

关键词： Quality of service Interference Base stations Wireless networks Computer architecture multimedia systems multimedia computing Mobile computing Topology Bandwidth

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Experience with TCP/IP networking protocol S/W over embedded OS for network appliance

Experience with TCP/IP networking protocol S/W over embedded...

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International conference on Parallel Processing Workshops (ICPPW)

作者： Sung-Woo Tak Jong-Moon Son Tae-Keun Kim Distributed Computing Team Electronics and Telecommunications Research Institute Daejeon South Korea

Currently, the market of multimedia information appliance based on Internet activated by the growth of both multimedia service and access of Internet augment the importance of TCP/IP protocol S/W which can provide the existing standalone embedded systems with Internet service. In this paper we analyze the architecture and function of TCP/IP module to depend on 4.4BSD OS (Operating System) runtime environment and propose the new method against TCP/IP module dependent on 4.4BSD OS runtime environment. And then we implement embedded OS for the network appliance that supports multitasking under its environment to use only physical memory in embedded system.

关键词： TCPIP Home appliances Kernel Web and internet services Libraries Runtime environment multimedia systems Access protocols Standards development multimedia computing

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Emerging and future research directions for mobile wireless ATM networks

Emerging and future research directions for mobile wireless ...

引用

IEEE conference on Wireless Communications and networking

作者： C.-K. Toh C.-H. Shih V. Vassiliou M. Delway Mobile Multimedia and HiSpeed Networking Laboratory School of Electrical and Computer Engineering Georgia Institute of Technology Atlanta USA

This paper examines the current status of research work on mobile ATM and presents the authors' view on pending technical challenges that require attention and investigation. Mobile ATM is not restricted to the local area and it need not be ground based. This paper examines: (a) location management, (b) connection management, (c) handoff management, (d) routing, and (e) media access for two evolving architectures, namely: (a) wireless ad-hoc ATM networks, and (b) LEO-based satellite ATM networks.

关键词： Routing Spine Asynchronous transfer mode Mobile computing Computer networks Satellite broadcasting Circuits Relays Network topology Ad hoc networks

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