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检索条件"任意字段=Conference on Multimedia Content Access - Algorithms and Systems"

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Evolutionary content Pre-fetching in Mobile Networks

Evolutionary Content Pre-fetching in Mobile Networks

引用

12th International conference on Machine Learning and Applications (ICMLA)

作者： Shoukry, Omar K. Fayek, Magda B. Cairo Univ Giza Egypt

ISBN: (纸本)9780769551449

Recently, an increasing number of smart phone users are eagerly using the cellular network in extensive data applications. In particular, multimedia downloads generated by Internet-capable smart phones and other portable devices (such as iPad) have been widely recognized as the major source for strains in cellular networks, to a degree where service quality for all users is significantly impacted. Lately, patterns in both the content consumption as well as the Wi-Fi access by the users were alleged to be available. In this paper we introduce a technique to schedule the content for prefetching based on mobile usage patterns. This technique utilizes both a content profile as well as a bandwidth profile to schedule content for prefetching. Users can then use the cached version of the content in order to achieve a better user experience and reduce the peak-to-average ratio in mobile networks, especially during peak hours of the day. An experiment using real users traces was conducted and the results after applying the proposed evolutionary scheduling algorithm show that up to 70 percent of the user content requests can be fulfilled i.e. the content was successfully cached before request.

关键词： Evolutionary algorithms memetic algorithms content pre-fetching mobile users behavioral Models scheduling pattern mining traffic offloading

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A Quality of Experience Handover System for Heterogeneous multimedia Wireless Networks

A Quality of Experience Handover System for Heterogeneous Mu...

引用

International conference on Computing, Networking and Communications (ICNC)

作者： Quadros, Carlos Cerqueira, Eduardo Neto, Augusto Pescape, Antonio Riker, Andre Immich, Roger Curado, Marilia Fed Univ Para BR-66059 Belem Para Brazil

ISBN: (纸本)9781467300094;9781467352871

The convergence of emerging real-time multimedia services, the increasing coverage of wireless networks and the ever-growing popularity of mobile devices, are leading to an era of user-centric multimedia wireless services. In this scenario, heterogeneous communications will co-exist and ensure that the end-user is always best connected. However, the Quality of Experience (QoE) support for emerging video applications in multi-operator environments remains a significant challenge and is crucial for the success of wireless multimedia systems. This paper presents a Quality of Experience Handover Architecture for Converged Heterogeneous Wireless Networks, called QoEHand. QoEHand allows users of multimedia content to be always best connected in IEEE 802.11e and IEEE 802.16e environments. Simulation results show the impact and benefit of the proposed solution in multi-access and multi-operator wireless scenarios by using objective and subjective QoE metrics.

关键词： Video Streaming QoE Wireless networks

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DOAS: Device-Oriented Adaptive multimedia Scheme for 3GPP LTE systems

DOAS: Device-Oriented Adaptive Multimedia Scheme for 3GPP LT...

引用

IEEE 24th International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC)

作者： Zou, Longhao Trestian, Ramona Muntean, Gabriel-Miro Dublin City Univ Sch Elect Engn Performance Engn Lab Dublin 9 Ireland

ISBN: (纸本)9781467362351

The growing popularity of the high-end mobile computing devices-smartphones, tablets, notebooks and more equipped with high-speed network access, enables the mobile user to watch multimedia content from any source on any screen, at any time, while on the move or stationary. In this context, the network operators must ensure smooth video streaming with the lowest service delay, jitter, and packet loss. This paper proposes a resource efficient Device-Oriented Adaptive multimedia Scheme (DOAS) built on top of the downlink scheduler in LTE-Advanced systems. DOAS bases its adaptation decision on the end-user device display resolution information and Quality of Service (QoS). DOAS is implemented on top of the Proportional Fair (PF) and the well-known Modified Largest Weighted Delay First (M-LWDF) scheduling algorithms within the 3GPP LTE/LTE-Advanced system. The performance of the proposed adaptive multimedia scheme was analyzed and compared against a non-adaptive solution in terms of throughput, packet loss and PSNR.

关键词： Long-term Evolution Mobile Device Resolution Downlink Scheduling

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Evolutionary Scheduling for Mobile content Pre-fetching

Evolutionary Scheduling for Mobile Content Pre-fetching

引用

2nd International conference on the Theory and Practice of Natural Computing (TPNC)

作者： Shoukry, Omar K. Fayek, Magda B. Cairo Univ Giza Egypt

ISBN: (纸本)9783642450082;9783642450075

Recently, an increasing number of mobile users are eagerly using the cellular network in data applications. In particular, multimedia downloads generated by Internet-capable smart phones and other portable devices (such as tablets) has been widely recognized as the major source for strains in cellular networks, to a degree where service quality for all users is significantly impacted. Lately, patterns in both the content consumption as well as the Wi-Fi access by the users were alleged to be available. In this paper we introduce a technique to schedule the content for prefetching based on mobile usage patterns. This technique utilizes both a content profile as well as a bandwidth profile to schedule content for prefetching. Users can then use the cached version of the content in order to achieve a better user experience and reduce the peak-to-average ratio in mobile networks, especially during peak hours of the day. An experiment using real users traces was conducted and the results after applying the proposed evolutionary scheduling algorithm show that up to 70% of the user content requests can be fulfilled i.e. the content was successfully cached before request.

关键词： Evolutionary algorithms Genetic algorithms content prefetching Mobile users Behavioral models Pattern mining Traffic offloading

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Enhancing the conference Experience with a Multi-Device, Multimodal, Multi-User Program Guide 13

Enhancing the Conference Experience with a Multi-Device, Mul...

引用

17th International Academic MindTrek conference on Making Sense of Converging Media

作者： Turunen, Markku Raisamo, Roope Olsson, Thomas Hella, Juho Miettinen, Toni Heimonen, Tomi Hakulinen, Jaakko Rakkolainen, Ismo Univ Tampere Kanslerinrinne 1 FI-33014 Tampere Finland Tampere Univ Technol FI-33720 Tampere Finland

ISBN: (纸本)9781450319928

Large-scale public events, such as conferences are becoming increasingly interactive with tools to support Web-based and mobile access to the event program. Multimodal interoperable devices can further improve the event experience. This paper introduces a multi-device, multimodal and multi-user conference program guide (M(3)PG), which provides access to the conference program through shared public displays and mobile devices. The service offers additional functionality such as multimedia content, voting, and event feedback. Its interaction methods include spoken language, gestures and haptic feedback. The service has been used in two conferences where it received very positive feedback. Together with pre-commercialization studies, the results indicate that the service is useful for conferences both from the user and organizer perspectives.

关键词： Multimodal interaction speech interfaces gestures electronic program guides conference systems

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Logo identification algorithm for TV Internet

Logo identification algorithm for TV Internet

引用

Federated conference on Computer Science and Information systems (FedCSIS)

作者： Chodyka, Marta Mosorov, Volodymyr Pope John Paul II Univ Inst Comp Sci Biala Podlaska Poland Lodz Univ Technol Inst Appl Comp Sci Lodz Poland

ISBN: (纸本)9781467344715

content inappropriate for children on Internet television is a serious problem in today's multimedia world. There are numerous methods which are used to control the content of the transmitted television programmes. However, these well-known methods do not solve the above mentioned problem completely. The paper presents a more effective method for automatic identification of the provider's logo based on an original image sequence analysis. The automatic identification of the provider's logo can be used to block access to video programmes of the selected providers. The method has been tested on some chosen video transmissions on-line, achieving over 98% of correct identification.

关键词： Automatic identification Video transmission Web TV Television Television programs Videotapes Image sequence analysis Internets access original image Authentication

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Sparse Conditional Mixture Model: Late Fusion with Missing Scores for multimedia Event Detection

Sparse Conditional Mixture Model: Late Fusion with Missing S...

引用

conference on multimedia content and Mobile Devices

作者： Nallapati, Ramesh Yeh, Eric Myers, Gregory SRI Int Menlo Pk CA 94025 USA

ISBN: (纸本)9780819494405

The problem of event detection in multimedia clips is typically handled by modeling each of the component modalities independently, then combining their detection scores in a late fusion approach. One of the problems of a late fusion model in the multimedia setting is that the detection scores may be missing from one or more components for a given clip;e.g., when there is no speech in the clip;or when there is no overlay text. Standard fusion techniques typically address this problem by assuming a default backoff score for a component when its detection score is missing for a clip. This may potentially bias the fusion model, especially if there are many missing detections from a given component. In this work, we present the Sparse Conditional Mixture Model (SCMM) which models only the observed detection scores for each example, thereby avoiding making any assumptions about the distributions of the scores that are made by backoff models. Our experiments in multi-media event detection using the TRECVID-2011 corpus demonstrates that SCMM achieves statistically significant performance gains over standard late fusion techniques. The SCMM model is very general and is applicable to fusion problems with missing data in any domain.

关键词： multimedia Data modeling Binary data Data fusion systems modeling Motion models Video Visual process modeling Expectation maximization algorithms Performance modeling

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Handoff Prediction for Data Caching in Mobile content Centric Network

Handoff Prediction for Data Caching in Mobile Content Centri...

引用

15th IEEE International conference on Communication Technology (ICCT)

作者： Jiang, Pengcheng Jin, Yuehui Yang, Tan Geurts, Joost Liu, Yaning Point, Jean Charles Beijing Univ Posts & Telecommun State Key Lab Network & Switching Technol Beijing 100876 Peoples R China Beijing Univ Posts & Telecommun Sch Software Engn Beijing 100876 Peoples R China JCP Consult R&D Paris France

ISBN: (纸本)9781479900749

As real-time mobile multimedia becomes more and more popular in modern life, Quality of Service (QoS) has drawn more and more attention. IEEE 802.11 has been widely deployed to provide broadband wireless network access due to its low cost, simplicity and high bandwidth capacity. However, its poor network availability and frequent network disconnection in a mobile scenario challenge real-time services. This paper presents a caching and pre-fetching mechanism based on the usage of content Centric Network (CCN) in mobile environments. The idea is to anticipate disconnections and prefetch the content that a user is expected to access in the near future. Hence, when to trigger the caching and pre-fetching module is an essential part of the objective. This paper focuses on the design and implementation of a disconnection predictor algorithm. The method is to predict the time before a terminal disconnects from an access Point (AP) by monitoring Received Signal Strength Indicator (RSSI). This paper evaluates and compares the used algorithms by experiments.

关键词： Quality of Service CCN DASH RSSI caching prediction

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A workflow model and architecture for content and metadata management based on grid computing

A workflow model and architecture for content and metadata m...

引用

2nd International conference on Information Technologies for Performing Arts, Media access and Entertainment, ECLAP 2013

作者： Bellini, Pierfrancesco Bruno, Ivan Nesi, Paolo Distributed Systems and Internet Technology Lab. Dipartimento di Ingegneria dell'Informazione Università degli Studi di Firenze Firenze Italy

ISBN: (纸本)9783642400490

Large scale multimedia services such as social networks, content delivery networks, online service archives provide access to huge amount of content with several hundreds of descriptors fields associated with and file versions, thus really complex content management systems. They have a great need of and orchestrated workflow system and automated process management system that allow managing content and metadata, in order to automate as much as possible the activities (thus reducing the costs) and increasing the quality and accessibility. Grid computing technology may aid at integrating and improving existing content management and workflow systems in order to efficiently organize and manage large amount of data and processes to cope with them. In this context, the workflow model and architecture base on grid computing adopted by ECLAP network is presented. © 2013 Springer-Verlag.

关键词： Metadata

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GAIN: Web service for user tracking and preference learning - A SMART TV use case 13

GAIN: Web service for user tracking and preference learning ...

引用

7th ACM conference on Recommender systems, RecSys 2013

作者： Kuchař, Jaroslav Kliegr, Tomáš Web Engineering Group Faculty of Information Technology Czech Technical University Prague Czech Republic Department of Information and Knowledge Engineering University of Economics Prague Czech Republic Multimedia and Vision Research Group Queen Mary University of London United Kingdom

ISBN: (纸本)9781450324090

GAIN (***) is a web application and service for cap- turing and preprocessing user interactions with semantically described content. GAIN outputs a set of instances in tabu- lar form suitable for further processing with generic machine- learning algorithms. GAIN is demoed as a component of a "SMART-TV" recommender system. content is automati- cally described with DBpedia types using a Named Entity Recognition (NER) system. Interest is determined based on explicit user actions and user's attention computed by 3D head pose estimation. Preference rules are learnt with an as- sociation rule mining algorithm. These can be e.g. deployed to a business rules system, acting as a recommender. © 2013 ACM.

关键词： Learning algorithms

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