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Novel cloud service for improving world universities ranking

Novel cloud service for improving world universities ranking

引用

9th International Conference on information Technology, ITNG 2012

作者： Hsieh, Shu-Ming Lo, Suu-An Hsu, Chiun-Chieh Lin, Wei-Chao Dep. Computer Science and Information Engineering Hwa Hsia Institute of Technology Taipei Taiwan Dep. Information Management National Taiwan University of Science and Technology Taipei Taiwan

ISBN: (纸本)9780769546544

The Internet has emerged to be an effective platform for world universities to share their academic outcomes and to show their influence and contribution via constructing rich and easy-to-access web sites. At the same time, Webometrics Ranking of World Universities (WR), proposed by Centre for Scientific information and Documentation (CSIC), ranks the world universities by the quantity of digital documents available on their web sites and the quality of the web pages measured by the incoming hyperlinks. Therefore, WR is currently recognized as an important index and opportunity for universities willing to promote themselves by the Internet technology. In this paper, we propose a novel cloud-based information providing system for Webometrics Rankings which employs web mining techniques to gather the WR indices from the Internet automatically, and provides useful information in real time for the managers of university web sites. The proposed system is dep.oyed on Microsoft Azure cloud platform in order to give up-to-data and deeper insights of the WR ranking indicators for its users. It utilizes the scalable computation and storage capability of the cloud platform to continually gather the WR index data from the Internet. The proposed system is designed with architecture suitable for cloud-based application such that the period to thoroughly update the WR ranking data is shortened from six months to be within one week. The proposed service model provides a paradigm for constructing cloud-based service of information providing applications. © 2012 IEEE.

关键词： Search engines

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Steganalysis of LSB matching based on wavelet denoising estimation in grayscale image

Steganalysis of LSB matching based on wavelet denoising esti...

引用

2008 2nd International Conference on Future Generation Communication and Networking, FGCN 2008

作者： Mankun, Xu Tianyun, Li Xijian, Ping Dep. of Information Science Univ. of Information Engineering China

ISBN: (纸本)9780769534312

We consider the problem of LSB matching detection in grayscale images which is hard and hot in steganalysis. In this paper, we model the matching embedding as a kind of image degradation caused by some certain pulse additive noise, and use the restored image by wavelet denoising as an estimation of the cover image. The detectors we used are the 1D and 2D adjacency histogram characteristic function center of mass introduced in the literature [8] We extract the features of the image before and after estimation and classify the cover and stego images with support vector machine. Experimental results show that our method is superior to Ker's calibrated estimation method, especially in low false positive probability. © 2008 IEEE.

关键词： Additive noise

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On representations of ternary order relations in numeric strings 2

On representations of ternary order relations in numeric str...

引用

2nd International Conference on Algorithms for Big Data, ICABD 2014

作者： Kim, Jinil Amir, Amihood Na, Joong Chae Park, Kunsoo Sim, Jeong Seop Dep. of Computer Science and Engineering Seoul National University Korea Republic of Department of Computer Science Bar-Ilan University Israel Johns Hopkins University United States Dep. of Computer Science and Engineering Sejong University Korea Republic of Dep. of Computer and Information Engineering Inha University Korea Republic of

Order-preserving matching is a string matching problem of two numeric strings where the relative orders of consecutive substrings are matched instead of the characters themselves. The order relation between two charac... 详细信息

关键词： Pattern matching

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A robust content-based image retrieval system using multiple features representations

A robust content-based image retrieval system using multiple...

引用

2005 IEEE Networking, Sensing and Control, ICNSC2005

作者： Tahoun, Mohamed A. Nagaty, Khaled A. El-Arief, Taha I. A-Megeed, Mohammed Computer Science Dep. Faculty of Computers and Informatics Suez Canal University Egypt Computer Science Dep. Faculty of Computer and Information Science Ain Shams University Egypt Scientific Computing Dep. Faculty of Computer and Information Science Ain Shams University Egypt

The similarity measurements and the representation of the visual features are two important issues in Content-Based Image Retrieval (CBIR). In this paper, we compared between the combination of wavelet-based representations of the texture feature and the color feature with and without using the color layout feature. To represent the color information, we used Global Color Histogram (GCH) beside the color layout feature and with respect to the texture information, we used Haar and Daubechies wavelets. Based on some commonly used Euclidean and Non-Euclidean similarity measures, we tested different categories of images and measured the retrieval accuracy when combining such techniques. The experiments showed that the combination of GCH and 2-D Haar wavelet transform using the cosine distance gives good results while the best results obtained when adding the color layout feature to this combination by using the Euclidean distance. The results reflected the importance of using the spatial information beside the color feature itself and the importance of choosing good similarity distance measurements. © 2005 IEEE.

关键词： Image retrieval

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Applying web mining techniques for constructing webometrics ranking early warning system

引用

2012 2nd International Conference on Materials science and information Technology, MSIT 2012

作者： Hsieh, Shu-Ming Lo, Ssu-An Hsu, Chiun-Chieh Chen, Da-Ren Dep. Computer Science and Information Engineering Hwa Hsia Institute of Technology Taipei Taiwan Dep. Information Management National Taiwan University of Science and Technology Taiwan Dep. Information Management Hwa Hsia Institute of Technology Taipei Taiwan

ISBN: (纸本)9783037854389

The management of university web sites is becoming more critical than before due to the rapid growth of the population dep.ndent on the world wide web as the most important (if not the only) information source. A university can spread its research outcomes and education achievements through its web site, and consequently gain visibility and influence from the web population. Webometrics Ranking of World Universities (WR) proposed by Centre for Scientific information and Documentation (CINDOC-CSIC), which ranks the university web sites, has obtained much attention recently. The rankings of WR are well recognized as an important index for universities willing to promote themselves by the internet technology. In this paper, we proposed WRES as an early warning system for Webometrics Rankings. WRES gathers the WR indices from the WWW automatically in flexible periods, and provides useful information in real time for the managers of university web sites. If the WR ranking of an institution is below the expected position according to their academic performance, university authorities should reconsider their web policy, by promoting substantial increases of the volume and quality of their electronic publications. Besides, the web site manages may adopt effective approaches to promote their WR rankings according to the hints given by WRES. © (2012) Trans Tech Publications, Switzerland.

关键词： Websites

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Using the web as corpus for un-supervised learning in question answering 16

Using the web as corpus for un-supervised learning in questi...

引用

16th Conference on Computational Linguistics and Speech Processing, ROCLING 2004

作者： Wang, Yi-Chia Wu, Jian-Cheng Liang, Tyne Chang, Jason S. Dep. of Computer and Information Science National Chiao Tung University Taiwan Dep. of Computer Science National Tsing Hua University Taiwan

In this paper we propose a method for unsupervised learning of relation between terms in questions and answer passages by using the Web as corpus. The method involves automatic acquisition of relevant answer passages from the Web for a set of questions and answers, as well as alignment of wh -phrases and keywords in questions with phrases in the answer passages. At run time, wh-phrases and keywords are transformed to a sequence of expanded query terms in order to bias the underlying search engine to give higher rank to relevant passages. Evaluation on a set of questions shows that our prototype improves the performance of a question answering system by increasing the precision rate of top ranking passages returned by the search engine. © Proc. of the 16th Conference on Computational Linguistics and Speech Processing, ROCLING 2004. All rights reserved.

关键词： Search engines

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Evaluation of context models to code wavelet-transformed hyperspectral images

Evaluation of context models to code wavelet-transformed hyp...

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作者： Aulí-Llinàs, Francesc Enfedaque, Pablo Serra-Sagristà, Joan Sanchez, Victor Dep. of Information and Communications Engineering Universitat Autónoma de Barcelona Spain Dep. of Computer Science University of Warwick United Kingdom

ISBN: (纸本)9781479957514

Context modeling is key in wavelet-based image coding schemes to achieve competitive coding performance. Commonly, context models are devised for a particular coding system and are employed for many different types of images. The aim of this work is to evaluate the suitability of three well-known context models for coding hyperspectral images, without focusing on a particular wavelet-based coding system. To do so, an entropy-based measure defined using the mechanisms utilized by modern image codecs is employed. The experimental results assess the appropriateness of the context models considering different coding rates and transform strategies. They reveal that some widely-used context models may not be as adequate as it is generally thought. The hints provided by this analysis may help to design simpler and more efficient wavelet-based codecs for hyperspectral images. © 2014 IEEE.

关键词： Wavelet transforms

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A sharable test content development and analysis mechanism based on scorm 11

A sharable test content development and analysis mechanism b...

引用

11th International Conference on Distributed Multimedia Systems, DMS 2005

作者： Hung, Lun-Ping Yang, Hsuan-Che Chang, Wen-Chih Chiang, Hui-Fen Dep. Of Information Management Northern Taiwan Institute of Science and Technology Taiwan Dep. of Computer Science and Information Engineering Tamkang University Taiwan R.O.C Taiwan

ISBN: (纸本)1891706179

In the environment of distance learning, most of current systems available are unable to share the experience of developing material content and can not provide subsequent learning result analysis. In order to overcome these shortcomings, we developed a sharable test content development and analysis mechanism (STCDAM) based on SCORM (Shareable Content Object Reference Model) and item response theory (IRT). Our purpose is to construct an integrated distance learning systematic assessment mechanism in which test content is shareable and the quality of a test can be improved. STCDAM incorporates advanced multimedia tools for content builder to construct test content easily based on the requirement of SCORM and evaluates online learners’ overall learning performance for teachers to adjust the test content to better reflect students’ learning ability. © 2005 by Knowledge Systems Institute Graduate School.

关键词： Distance education

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Data Security System for IoT Applications 3

Data Security System for IoT Applications

引用

3rd International Conference on Advanced science and engineering, ICOASE 2020

作者： Mohammed, Shahed Al-Jammas, Mohammed H. Ninevah University Computer and Information Engineering Dep. Mosul Iraq

ISBN: (纸本)9781665415798

The Internet of Things (IoT);can be defined as a think connected to the internet anywhere and anytime. Data security is one of the vital concepts in IoT security. So, the data to be uploaded should be made secure. There are many differenced cryptography algorithms such as Advanced Encryption Standard (AES), Nth degree truncates polynomial ring (NTRU), RSA, DES, and others to make security for data in IoT. In this paper, we suggest an algorithm that combines the feature of symmetric and asymmetric cryptography algorithms. Where the AES algorithm and NTRU public key used to create the special key at the receive side, then send the key to the sender side to make data security for IoT. The proposed algorithms provide strong security and low computation. The model has been simulating by MATLAB. The execution time for text (526 characters) for key generation is 0.092414 seconds, 0.020521 seconds for encryption and 0.060921 seconds for decryption and the execution time for image with size (512 * 512) for key generation is 0.101900 seconds, 1.699665 seconds for encryption and 12.82071 seconds for decryption. © 2020 IEEE.

关键词： Internet of things

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Short-delay video streaming with restricted supplying peer bandwidth

Short-delay video streaming with restricted supplying peer b...

引用

8th International Conference on Management of Multimedia Networks and Services, MMNS 2005

作者： Yang, Hung-Chang Yu, Hsiang-Fu Tseng, Li-Ming Chen, Yi-Ming Dep. of Computer Science and Information Engineering National Central University Jung-Li Taiwan Dep. of Information Management National Central University Jung-Li Taiwan

ISBN: (纸本)3540296417

With the growth of bandwidth, real-time video streaming service becomes popular. Such application is also considered a future killer application on Internet. Recent research efforts have demonstrated the promising potential of building cost-effective video streaming systems on top of peer-to-peer (P2P) networks. Since the peers have limited capacity, such as upstream bandwidth, each streaming session may involve multiple supplying peers. In this paper, we propose a novel strategy to retrieve a long-duration video from multiple peers which have arbitrary and restricted upstream bandwidth, such that the waiting time is minimized. In comparison with the previous work [13], our strategy can greatly improve the waiting time. In the arbitrary given examples, our strategy can improve the waiting time by 67%. To take into account the popular compressed video with variable bit rate, we also show how to apply our strategy readily to the VBR videos. © IFIP International Federation for information Processing 2005.

关键词： Multimedia systems

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