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IEEE International conference on multimedia and Expo (ICME)

作者： A. Kohrs B. Merialdo Department of Multimedia Communications Institut EURECOM Sophia-Antipolis France

Collaborative filtering is an important technology for creating user-adapting Web sites. In general the efforts of improving filtering algorithms and using the predictions for the presentation of filtered objects are decoupled. Therefore, common measures (or metrics) for evaluating collaborative filtering (recommender) systems focus mainly on the prediction algorithm. It is hard to relate the classic measurements to actual user satisfaction because of the way the user interacts with the recommendations, determined by their representation, influences the benefits for the user. We propose an abstract access paradigm, which can be applied to the design of filtering systems, and at the same time formalizes the access to filtering results via multi-corridors (based on content-based categories). This leads to new measures which better relate to the user satisfaction. We use these measures to evaluate the use of various kinds of multi-corridors for our prototype user-adapting Web site, the Active WebMuseum.

关键词： Collaboration Active filters Information filtering Information filters Filtering algorithms Prediction algorithms Prototypes Recommender systems multimedia communication Measurement standards

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East-European conference on Advances in Databases and Information systems Held Jointly with International conference on Database systems for Advanced Applications, ADBIS-DASFAA 2000

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East-European conference on Advances in Databases and Information systems Held Jointly with International conference on Database systems for Advanced Applications, ADBIS-DASFAA 2000

ISBN: (纸本)3540679774

The proceedings contain 34 papers. The special focus in this conference is on Current Issues in Databases and Information systems. The topics include: An advanced processing environment for managing the continuous and semistructured features of multimedia content;database systems as middleware-events, notification, messages;managing schemata for semistructured databases using constraints;caching for mobile communication;efficient cache management protocol based on data locality in mobile DBMSs;algorithms for rewriting aggregate queries using views;a new high-dimensional index structure using a cell-based filtering technique;active system for heterogeneous ODBMS using mobile rule codes;2-D spatial indexing scheme in optimal time;mining around association and representative rules;a new algorithm for page access sequencing in join processing;data organization issues for location-dependent queries in mobile computing;towards intelligent information retrieval engines;design and implementation of a novel approach to keyword searching in relational databases;a rule-oriented architecture to incorporate dissemination-based information delivery into information integration environments;hierarchical materialisation of method results in object-oriented views;finding generalized path patterns for web log data mining;size estimation of the intersection join between two line segment datasets;distributed searching of k-dimensional data with almost constant costs;decision committee learning with dynamic integration of classifiers;multiversion linear quadtree for spatio-temporal data;on the analysis of on-line database reorganization;systematization of approaches to equality-generating constraints and an efficient storage manager.

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content-based retrieval in multimedia databases based on feature models 1st

Content-based retrieval in multimedia databases based on fea...

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1st International conference on Advanced multimedia content Processing (AMCP 98)

作者： Apers, P Kersten, M Univ Twente NL-7500 AE Enschede Netherlands CWI NL-1009 AB Amsterdam Netherlands

ISBN: (纸本)3540657622

With the increasing popularity of WWW, the main challenge in computer science has become content-based retrieval of multimedia objects. Until now access of multimedia objects in databases was done by means of keywords. Now, with the integration of feature-detection algorithms in database systems software, content-based retrieval can be fully integrated with query processing. In this invited paper, we describe our experimentation platform under development that fully integrates traditional query processing and content-based retrieval and that is based on feature databases, making database technology available to multimedia.

关键词： content based retrieval

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Managing large scale broadband multimedia services on distributed media servers

International Conference on Multimedia Computing and Systems...

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International conference on multimedia Computing and systems -Proceedings 1999年 1卷 320-325页

作者： Lueling, Reinhard Univ of Paderborn Germany

This paper presents algorithms and principles for the management of large scale broadband multimedia services. For the implementation of these services we use a network of distributed media servers, storing broadband media information e.g. audio and video that are streamed from the server to the connected clients. The problem studied in this paper is the managing of media content on a server network. We present the 'Distributed Server Management System (DSMS)' that performs an efficient content and service management on the distributed servers. The DSMS allows to collect access patterns from the users of the multimedia services and uses this knowledge for the solution of some combinatorial optimization algorithms that have to be solved for an efficient assignment of media assets. We present these optimization algorithms and evaluate their performance using some benchmark instances.

关键词： multimedia systems

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Managing large scale broadband multimedia services on distributed media servers

Managing large scale broadband multimedia services on distri...

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IEEE International conference on multimedia Computing and systems (ICMCS)

作者： R. Luling Department of Mathematics and Computer Science University of Paderborn Germany

The paper presents algorithms and principles for the management of large scale broadband multimedia services. For the implementation of these services, we use a network of distributed media servers, storing broadband media information e.g. audio and video that are streamed from the server to the connected clients. The problem studied in the paper is the managing of media content on a server network. We present the "Distributed Server Management System (DSMS)" that performs an efficient content and service management on the distributed servers. The DSMS allows one to collect access patterns from the users of the multimedia services and uses this knowledge for the solution of some combinatorial optimization algorithms that have to be solved for an efficient assignment of media assets. We present these optimization algorithms and evaluate their performance using some benchmark instances.

关键词： Large-scale systems Network servers Streaming media content management Spine Bandwidth Bit rate Mathematics Computer science Large scale integration

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An adaptive view element framework for multi-dimensional data management 99

An adaptive view element framework for multi-dimensional dat...

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8th International conference on Information Knowledge Management (CIKM 99)

作者： Smith, JR Li, CS IBM TJ Watson Res Ctr Data Management Hawthorne NY 10532 USA

ISBN: (纸本)1581131461

We present an adaptive wavelet view element framework for managing different types of multi-dimensional data in storage and retrieval applications. We consider the problems of multi-dimensional data compression, multi-resolution sub-region access, selective materialization, progressive retrieval and similarity searching. The framework uses wavelets to partition the multi-dimensional data into view elements that form the building blocks for synthesizing views of the data. The view elements are organized and managed using different view element graphs. The graphs are used to guide cost-based view element selection algorithms for optimizing compression, access, retrieval and search performance. We present the adoptive wavelet view element framework and describe its application in managing multi-dimensional data such as 1-D time series data, 2-D images, video sequences, and multi-dimensional data cubes. We present experimental results that demonstrate that the adaptive wavelet view element framework improves performance of compressing, accessing, and retrieving multi-dimensional data compared to non-adaptive methods.

关键词： multimedia database systems data management OLAP data cubes content-based search digital libraries and information retrieval

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Static and dynamic mapping of media assets on a network of distributed multimedia information servers

Static and dynamic mapping of media assets on a network of d...

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International conference on Distributed Computing systems

作者： R. Luling Department of Mathematics and Computer Science University of Paderborn Germany

This paper presents principles and algorithms for the management of a network of media servers. Such a server network allows the online delivery of broadband multimedia data, e.g. audio and video streams, to a large number of widely distributed clients. Thus, the implementation of large scale distributed broadband media information services is possible if such networks can be handled efficiently. In the paper two new combinatorial optimization problems are defined that have to be solved for an efficient management of the distributed media servers connected by a high-bandwidth communication network. The algorithms consider the case of a static mapping of media assets onto the server network as well as the dynamic migration of media assets on such a network. The first scenario is used in the case that all media assets are loaded for the first time onto the server network. The second scenario is applied dynamically during run-time of an information service taking the varying user access pattern and changing media content of the server network into account. In this paper the algorithms are presented and their efficiency is demonstrated using some benchmark instances. The algorithms are part of a larger distributed system that allows the management of a network of distributed media servers. The principles of this system are presented as well as some applications that have been developed and are supported by this distributed server management system (DSMS).

关键词： Network servers Streaming media Bandwidth Mathematics Computer science Reactive power Large-scale systems multimedia systems Information systems Graphics

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Multi-phase interval caching for a news on demand server

Multi-phase interval caching for a news on demand server

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IEEE International conference on multimedia Computing and systems (ICMCS)

作者： Yong Woon Park Won ii Seo Ki Dong Chung Department of Computer Science Pusan National University Busan South Korea

We propose a buffer cache algorithm to build a cost effective storage server for real time news objects. In a news on demand server the number of concurrent streams is bounded for the maximum disk bandwidth the NOD server provides. The maximum numbers of concurrent streams can be increased more than the total disk bandwidth supports if the buffer cache is applied to hold hot news objects. However it is said that conventional caching algorithms do not go well with real time news objects. With our proposed caching scheme all of the news objects are classified based on their arrival rate; their eligibility is then checked for caching. Only suitable objects are permitted to access the buffer pool to reduce unnecessary buffer replacement. We use simulation to verify the efficiency of our proposed algorithm and our results show that by using this caching scheme, compared with servicing requested streams only by disks, a greater number of requests are serviced without extra cost.

关键词： Streaming media Bandwidth Motion pictures Buffer storage Costs Real time systems Computer science Cache storage Web and internet services Large-scale systems

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Proceedings of the 1998 conference on Electronic Imaging and multimedia systems ii

Proceedings of the 1998 Conference on Electronic Imaging and...

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Proceedings of the 1998 conference on Electronic Imaging and multimedia systems ii

The proceedings contains 61 papers from the SPIE International Society for Optical Engineering Journal on Electronic Imaging and multimedia systems ii. Topics discussed include: image retrievals;gray image recognition;content-based image retrieval;color pattern selections;video segmentations;declarative video data retrieval languages;network databases;fast spatial transformations;moving object segmentation methods;anisotropic segmentations;video segmentation algorithms;wavelet-derived gradient computations;dual-band imaging systems;genetic algorithms;thermal image compression systems;multimedia-on-demand services;personal digital assistant (PDA) systems;and real-time nonlinear video authoring systems.

关键词： Image processing

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Proceedings of the 1998 conference on Electronic Imaging and multimedia systems ii

Proceedings of the 1998 Conference on Electronic Imaging and...

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Proceedings of the 1998 conference on Electronic Imaging and multimedia systems ii

关键词： Image processing

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