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VCSR: Video Content Summarization for Recommendation

VCSR: Video Content Summarization for Recommendation

引用

International Conference on Advanced Learning Technologies (ICALT)

作者： Chi-Cheng Tsai Ching-I Chung Yi-Ting Huang Chia-Hsing Shen Yu-Chieh Wu Jie-Chi Yang Graduate Institute of Network Learning Technology National Central University Taiwan Department of Computer Science Information Engineering National Central University Taiwan

In this paper, the authors present a video content summarization for recommendation (called VCSR) system to auto-recommend suitable multimedia learning materials for learners. The VCSR system firstly extracts important content as summarization from input raw video data, while the generated summarization will be auto-routed to learners according to their profiles. Video captions are initially recognized using optical character recognition (OCR), then a set of key passages with corresponding frame images are extracted to form a video summary. The recommendation is achieved by calculating the relevance of the video summarization for each learner. Also, this paper indicates how the VCSR system effectively plays the intermediate role in a modern digital library.

关键词： Data mining Videoconference Optical character recognition software Multimedia systems Character recognition Software libraries Materials science and technology computer science Optical materials Image recognition

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A Mobile Video Question Answering System for E-learning

A Mobile Video Question Answering System for E-learning

引用

International Conference on Advanced Learning Technologies (ICALT)

作者： Yi-Ting Huang Ching-I Chung Chi-Cheng Tsai Chia-Hsing Shen Yu-Chieh Wu Jie-Chi Yang Graduate Institute of Network Learning Technology National Central University Taiwan Department of Computer Science and Information Engineering National Central University Taiwan

In this paper, the authors proposed a mobile video QA (Question Answering) system for online annotation and ubiquitous multimedia learning. Under the wireless and mobile environment, learners could interact with the system through natural language questions rather than traditional query-like text retrieval. The handheld device is not as well as traditional keyboard input, while the annotation is quite inefficient and inconvenient. To solve this, the authors designed a simple browsing and clicking model to enable learners annotating and auto-feedback as e-mail to learner's mail box. A pilot study was conducted to evaluate the preliminary experimental results for learning. The experimental results showed that the proposed system effectively engaged learners in multimedia video QA in handheld device where all subjects agreed that the system is positive and useful.

关键词： Electronic learning Handheld computers Multimedia systems Mobile computing Humans History Content based retrieval Personal digital assistants Educational institutions computer science

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EduBingo: Design of Multi-level Challenges of a Digital Classroom Game

EduBingo: Design of Multi-level Challenges of a Digital Clas...

引用

IEEE International Workshop on Digital Game and Intelligent Toy Enhanced Learning (DIGITEL)

作者： Hercy N.H. Cheng Yi-Chan Deng Sung-Bin Chang Tak-Wai Chan Department of Computer Science and Information Engineering National Central University Taiwan Graduate Institute of Network Learning Technology National Central University Taiwan

Some researches suggest that well-designed computer games can facilitate children's learning and motivation on mathematics (Klawe, 1998 and Randel et al., 1992). To sustain the fun in playing a learning game, according to the concept of "flow", students need a series of challenges to match their developing skills. This paper addresses two design questions: 1) How to transform a popular game into an educational game? 2) How to design multi-level challenges to sustain fun for practicing arithmetic in that game? In this paper, the game rules of Bingo are modified to design a competitive computer game, called EduBingo, for practicing arithmetic in a classroom. Based on our previous works and surveys of several digital games, four dimensions of challenges are identified for devising such educational games. A trail test was conducted to preliminarily evaluate the game's effects on learning, and, in particular, the influences of different dimensions of challenges on practice.

关键词： Mathematics computer science computer networks Digital arithmetic Testing Humans Pattern recognition Resource management Educational institutions Sorting

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My-Pet-and-Her-Friends: Identifying Educational Roles of Animal Companions in Game-based Learning Environment

My-Pet-and-Her-Friends: Identifying Educational Roles of Ani...

引用

IEEE International Workshop on Digital Game and Intelligent Toy Enhanced Learning (DIGITEL)

作者： Zhi-Hong Chen Calvin C.Y. Liao Tak-Wai Chan Department of Computer Science and Information Engineering National Central University Taiwan Graduate Institute of Network Learning Technology National Central University Taiwan

Virtual characters simulated by computers have been a subject for research and development in both artificial intelligence in education (AIED) and video game design. Between AIED and video games there is an emerging enterprise, that is, virtual characters in video learning game design. This paper proposes a profile-driven-interaction (PDI) framework which borrows the design experience of virtual characters from AIED research to that for video learning games. The PDI framework enables virtual characters to take roles for various educational purposes based on the learner model of that learner and learner models of other learners. These virtual characters are designed in such a way that when they interact with a learner, the learner is actually improving her learning status. Based on this framework, a video learning game, called My-Pet-and-Her-Friends, is developed to address some relevant issues in the learning process, in particular, the issues of engagement and reflection of the learner.

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A TIME-ROBUST SPAM CLASSIFIER BASED ON BACK-PROPAGATION NEURAL networkS AND BEHAVIOR-BASED FEATURES

A TIME-ROBUST SPAM CLASSIFIER BASED ON BACK-PROPAGATION NEUR...

引用

2007 International Conference on Machine Learning and Cybernetics(IEEE第六届机器学习与控制论国际会议)

作者： CHIH-HUNG WU CHIUNG-HUI TSAI Department of Electronic Engineering National University of Kaohsiung Kaohsiung Taiwan Computer and Network Center Chung Hwa University of Medical Technology Tainan Taiwan

Earlier works on detecting spam emails usually compare the contents of emails against specific keywords, which are not robust as the spammers frequently change the terms used in *** this paper, an back-propagation neural network is designed and implemented, which builds classification model by considering the behavior-based features revealed from emails' headers and *** spamming behaviors are infrequently changed, compared with the change frequency of keywords used in spams, behavior-based features are more robust with respect to the change of time; so that the behavior-based filtering mechanism outperform keyword-based *** experimental results indicate that our methods are more useful in distinguishing spam emails than that of keyword-based comparison.

关键词： Spam Back-Propagation Neural networks Machine Learning Classification

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Design of Dyad Game for Developing Fluency in Multiplication Facts

Design of Dyad Game for Developing Fluency in Multiplication...

引用

IEEE International Workshop on Digital Game and Intelligent Toy Enhanced Learning (DIGITEL)

作者： Charles Y.C. Yeh Calvin C.Y. Liao Jen-Hang Wang Tak-Wai Chan Graduate Institute of Network Learning Technology National Central University Taiwan Department of Computer Science and Information Engineering National Central University Taiwan

In elementary arithmetic, after acquiring the concept and basic procedures of multiplication, fluency in multiplication facts in the times table then becomes the basis for computing more complex multiplications, for example, multiplying two 2-digit numbers. A dyad game in one-to-one technology enhanced classroom environment, called Honeycomb, is designed for developing the fluency of multiplication facts through utterance memorization and retrieval. Honeycomb is a drill-and-practice game for enhancing students' multiplication facts retrieval.

关键词： computer networks Mathematics computer science Digital arithmetic Education Sorting Mouth Portable computers Fellows Prototypes

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Meta-analyzer: A web-based environment for analyzing student information searching behaviors

Meta-analyzer: A web-based environment for analyzing student...

引用

2nd International Conference on Innovative Computing, Information and Control, ICICIC 2007

作者： Hwang, Gwo-Jen Tsai, Pei-Shan Tseng, Judy C. R. Lin, Chia-Ching Tsai, Chin-Chung Department of Information and Learning Technology National University of Tainan Taiwan Information Management Department National Chi Nan University Taiwan Department of Computer Science and Information Engineering Chung-Hua University Taiwan Graduate Institute of Network Learning Technology National Central University Taiwan Graduate School of Technological and Vocational Education National Taiwan University of Science and Technology Taiwan

ISBN: (纸本)0769528821

The rapid progress of computer and network technologies has attracted educational researchers to study the strategies and the effects of applying information technology in learning activities. Although previous research demonstrated the benefits of applying information technologies to learning process, its difficulty was also reveled. One of the major difficulties is owing to the lack of a learning environment that can record the learning portfolio of using information technologies in education, such that the teacher can analyze and evaluate the learning performance of students, and hence the teaching strategies can be adjusted accordingly. In this paper, we propose a web-search learning environment based on meta-index approach, which is able to assist the teachers in analyzing student learning behaviors of using search engines for problem solving. An experiment on 161 K4 students has been conducted to evaluate the benefits of this approach. Experimental results showed that the novel approach is able to assist the teachers to acquire more about the learning status of students, and hence more constructive suggestions can be given accordingly. ©2007 IEEE.

关键词： computer networks

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Image Authentication for Low Complexity Applications

Image Authentication for Low Complexity Applications

引用

IEEE Region 5 Annual Technical Conference

作者： W. Adi A. Dawood A. Mabrouk Sarhan M. Musa Institute of Computer and Communication Network Engineering Technical University of Braunschweig Brunswick Germany Communication Engineering Department Etisalat University College Sharjah UAE Lufthansa Systems AS Kelsterbach Germany Engineering Technology Department Prairie View A and M University Prairie View TX USA

Hand-held mobile devices are having a wide spectrum of applications. Such devices which incorporate sending images of relevant legal significance require certifying the source of the image. Hand-held devices inherently have very limited energy resources. The aim of this work is to propose low energy authentication mechanism even when using public-key cryptography. We proposed a technique for fast public-key image authentication using fuzzy-computations for the El-Gamal authentication technique. The fuzzy operations are embedded in the authentication computations to sign images without performing high complexity operations such as exponentiations. The result is low complexity and low energy processing on the mobile device site. The technique is rather general and can be deployed similarly for other similar environments. The fact that power consumption/speed is becoming an essential issue for hand-held devices make this technique very promising for future applications.

关键词： Authentication Public key cryptography Public key Image coding Mobile computing Watermarking Data security Application software computer applications computer networks

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Wireless Ad Hoc Podcasting

Wireless Ad Hoc Podcasting

引用

IEEE Communications Society Conference on Sensor and Ad Hoc Communications and networks (SECON)

作者： Vincent Lenders Gunnar Karlsson Martin May Department of Electrical Engineering Princeton University Princeton NJ USA Laboratory for Communications Networks KTH Royal Institute of Technology Stockholm Sweden Computer Engineering and Network Laboratory ETH Zurich Zurich Switzerland

Podcasting has become popular for dissemination of streaming contents over the Internet. It is based on software clients that query servers for updates of subscribed content feeds. Podcasting may be used for any media content, but it is most commonly associated with audio streams. It provides a simple, no-frills broadcasting system for delay tolerant contents. A main limitation with this system is the inflexible separation of downloading to a docked media player and expending of the data when on the move. We herein present how podcast could be supported by our previously proposed delay-tolerant broadcasting system in order to reduce the expected times between updates and to provide a new ad hoc podcasting mode among mobile nodes. Our system substitutes the client-server paradigm inherent in present podcasting by a peer-to-peer paradigm where mobile nodes provide each other with contents. We present the protocol for this, and an evaluation of solicitation and caching strategies that greatly affect the application-level throughput. Our design is aiming at simplicity in order to enable implementation in mobile phones with media players and other devices that communicate over short ranges by means of Bluetooth or wireless LAN.

关键词： Digital audio broadcasting Streaming media Peer to peer computing Delay systems Internet Web server Feeds Protocols Throughput Mobile handsets

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Accurate ICMP TraceBack Model under DoS/DDoS Attack

Accurate ICMP TraceBack Model under DoS/DDoS Attack

引用

International Conference on Advanced Computing and Communications (ADCOM)

作者： Alireza Izaddoost Mohamed Othman Mohd Fadlee A. Rasid Department of Communication Technology and Network Universiti Putra Malaysia Malaysia Department of Computer and Communication Systems Engineering Universiti Putra Malaysia Serdang Selangor Darul Ehsan Malaysia

One of the most significant current groups of security endangerments in the Internet is DoS/DDoS attacks. The goal of these kinds of attacks is to completely engage available resources so that legitimate users are not able to access a service. Some traceback approach has been proposed to traceback source of attack. One of these methods is Intention-driven iTrace which is the working base of the ICMP traceback. By this method, it will be possible to increase effective ICMP traceback messages which can provide useful information to the victim in tracing source of attack. Reconstructed path to the source of attack by the victim can be done accurately when more effective ICMP traceback messages are generated in critical routers. In this paper, we proposed a model considering incoming packets routed to the victim and by modifying intention-driven iTrace model, we can generate more effective ICMP traceback packets to locate the source of attack more accurately.

关键词： computer crime Web and internet services IP networks Telecommunication traffic computer networks Routing Communications technology Systems engineering and theory Communication system security computer security

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