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4th IEEE International Symposium on Wireless Communication Systems 2007, ISWCS'07

作者： Andresen, Steinar H. Krogstie, John Jelle, Thomas Dep. of Telematics NTNU N-7491 Trondheim Norway Dep. of Computer and Information Science NTNU N-7491 Trondheim Norway

This paper gives a short introduction to the layout and organisation of lab facilities in connection to Wireless Trondheim. Current research activities and future possibilities are described. © 2007 IEEE.

ISBN: (纸本)1424409799

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Eccentric error and compensation in rotationally symmetric laser triangulation

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仪器仪表学报 2007年第9期28卷 1548-1553页

作者： Wang Lei Gao Jun Wang Xiaojia Johannes Eckstein Peter Ott Lab of Image Information Processing School of Computer and Information Hefei University of Technology Hefei 230009 China Optical Engineering Lab. Heilbronn University Heilbronn D-74081 Germany Dep. of Mechanical and Electrical Engineering Xiamen University Xiamen 361005 China

Rotationally symmetric triangulation(RST)sensor has more flexibility and less uncertainty limits because of the abaxial rotationally symmetric optical *** if the incident laser is eccentric,the symmetry of the image will descend,and it will result in the eccentric error especially when some part of the imaged ring is *** model of rotationally symmetric triangulation that meets the Schimpflug condition is presented in this *** error from eccentric incident laser is *** is pointed out that the eccentric error is composed of two parts,one is a cosine in circumference and proportional to the eccentric dep.rture factor,and the other is a much smaller quadric factor of the *** the ring is complete,the first error factor is zero because it is integrated in whole ring, but if some part of the ring is blocked,the first factor will be the main *** verifies the result of the a- *** last,a compensation method to the error when some part of the ring is lost is presented based on neural *** results of experiment show that the compensation will make the absolute maximum error descend to half,and the standard deviation of error descends to 1/3.

关键词：补偿作用旋转对称激光三角测量法偏心因子视力测量神经网络

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An Overview of Bag of Words;Importance, Implementation, Applications, and Challenges 5

An Overview of Bag of Words;Importance, Implementation, Appl...

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5th International engineering Conference on Developments in Civil and computer engineering Applications, IEC 2019

作者： Qader, Wisam A. Ameen, Musa M. Ahmed, Bilal I. Tishk International University Computer Engineering Dep. Erbil Iraq Tishk International University Information Technology Dep. Erbil Iraq

ISBN: (纸本)9781728143774

In the past fifteen years, the grow of using Bag of Words (BoW) method in the field of computer vision is visibly observed. In addition,-for the text classification and texture recognition, it can also be used in classification of images, videos, robot localization, etc. It is one of the most common methods for the categorization of text and objects. In text classification, the BoW method records the number of occurrences of each bag that is created for each instance type or word disregarding the order of the words or the grammar. And in visual scene classification it is based on clusters of local descriptors which are taken from the images disregarding the order of the clusters. The key idea is to generate a histogram for the words in the documents or the features in the images to represent the specified document or image. The BoW method is computationally and even conceptually is simpler than many other classification methods. For that reason, BoW based systems could record new and higher performance scores on common used benchmarks of text and image classification algorithms. This paper presents an overview of BoW, importance of BoW, how does it work, applications and challenges of using BoW. This study is useful in terms of introducing the BoW method to the new researchers and providing a good background with associated related works to the researchers that are working on the model. © 2019 IEEE.

关键词： Image classification

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Robust watermarking scheme based on RDWT-SVD: Embedding data in all subbands

Robust watermarking scheme based on RDWT-SVD: Embedding data...

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作者： Lagzian, Samira Soryani, Mohsen Fathy, Mahmood Dep. Computer Engineering Iran University of Science and Technology Tehran Iran

ISBN: (纸本)9781424498345

In this paper, a new method for non-blind image watermarking presented that is robust against affine transformation and ordinary image manipulation. The proposed method presents a watermarking scheme based on redundant discrete wavelet transform (RDWT) and Singular Value Decomposition (SVD). After applying RDWT to cover image, we apply SVD to each subband. Then we modify singular values of the cover image using singular values of the visual watermark. The advantage of the proposed technique is its robustness against most common attacks. Analysis and experimental results show higher performance of the proposed method in comparison to the DWT-SVD method. © 2011 IEEE.

关键词： Singular value decomposition

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Question classification using multiple classifiers 5

Question classification using multiple classifiers

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5th Workshop on Asian Language Resources, ALR 2005 and 1st Symposium on Asian Language Resources Network, ALRN 2005

作者： Li, Xin Huang, Xuan-Jing Wu, Li-De Computer Science Engineering Dep. FUDAN Univ. Shanghai China

The Open-domain Question Answering system (QA) has been attached great attention for its capacity of providing compact and precise results for Xsers. The question classification is an essential part in the system, affecting the accuracy of it. The paper studies question classification through machine learning approaches, namely, different classifiers and multiple classifier combination method. By using compositive statistic and rule classifiers, and by introducing dep.ndency structure from Minipar and linguistic knowledge from Wordnet into question representation, the research shows high accuracy in question classification. © 2005 5th Workshop on Asian Language Resources, ALR 2005 and 1st Symposium on Asian Language Resources Network, ALRN 2005 - Proceedings. All rights reserved.

关键词： Classification (of information)

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A sound framework for dynamic prevention of Local File Inclusion 7

A sound framework for dynamic prevention of Local File Inclu...

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7th Conference on information and Knowledge Technology, IKT 2015

作者： Tajbakhsh, Mir Saman Bagherzadeh, Jamshid Dep. of Electrical Engineering and Computer Science Urmia University Urmia Iran

ISBN: (纸本)9781467374859

Web applications take an important role in remote access over the Internet. These applications have many capabilities such as database access, file read/write, calculations as well as desktop applications but run in web browsers environments. As desktop applications, web applications can be exploited but with different techniques. One of the major known vulnerabilities of the web applications is Local File Inclusion. Inclusion in web applications is similar to library imports in desktop applications where a developer can include former developed codes. If an attacker includes his/her libraries, he/she can run his/her malicious code. Current research makes a brief survey of static and dynamic code analysis and suggests a framework for dynamically preventing malicious file inclusions by attackers. It is discussed that this framework prevents local file inclusions even if the developer has exploitable source code. The language PHP is used for describing the vulnerability and prevention framework. © 2015 IEEE.

关键词： Web browsers

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A splitting line model for directional relations 11

A splitting line model for directional relations

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19th ACM SIGSPATIAL International Conference on Advances in Geographic information Systems, ACM SIGSPATIAL GIS 2011

作者： Buchin, Kevin Kusters, Vincent Speckmann, Bettina Staals, Frank Vasilescu, Bogdan Dep. of Mathematics and Computer Science TU Eindhoven Netherlands Institute of Theoretical Computer Science ETH Zürich Switzerland Dep. of Information and Computing Sciences Utrecht University Netherlands

ISBN: (纸本)9781450310314

Directional relations are fundamental to spatial data queries, analysis and reasoning. Consequently there has been a significant amount of effort to determine directional relations between two regions. However, many existing methods do not perform well when the regions are neighboring or intertwined. In this paper we introduce a new model for directional relations which is based on a splitting line separating the two regions in question. We identify essential quality criteria for directional relation models and translate them into measurable properties of a given splitting line. We present an efficient algorithm that computes an optimal splitting line for two regions and perform extensive experiments. Our results show that the splitting line model captures directional relations very well and that it clearly outperforms existing approaches on pairs of neighboring or intertwined regions. © 2011 ACM.

关键词： splitting line geometric algorithms directional relations

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A virtual reality dance self-learning framework using Laban movement analysis

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Journal of engineering science and Technology Review 2017年第5期10卷 25-32页

作者： Sun, Guoyu Chen, Wenjuan Li, Haiyan Sun, Qingjie Kyan, Matthew Muneesawang Zhang, Pengzhou Animation School Communication University of China Beijing100024 China Dep. of Electrical Engineering and Computer Science York University TorontoONM3J 1P3 Canada Dep. of Electrical and Computer Engineering Naresuan University Phisanulok65000 Thailand

The capabilities of general motion evaluation algorithms are significantly limited in analyzing the stylistic qualities and expressions of dance movement. This study proposes a novel dance self-learning framework on the basis of the principles of Laban movement analysis (LMA) to facilitate trainees in automatically analyzing dance movements and correcting dance techniques without an expert. First, a "shape-effort" feature description model was presented in this framework to reflect the subtleties of dance movement. The evaluation of body-shape performance was obtained via open-end dynamic time warping algorithm. Next, rhythm was qualitatively assessed by curve fitting, whereas effort was measured by using standard deviation. Finally, constructive instructions were generated in this framework on basis of the assessment scores of the movement of the trainees. The framework was implemented in cave automatic virtual environment, and its effectiveness and feasibility were verified through experiments. Results demonstrate that the feature description model with 23 LMA parameters can be used in describing dance movements. Multi-mode feedback with direct instructions for the problems in question satisfies the learning habits of the trainee. The quality of the trainees' movements achieves an average of 10% overall improvement by using the framework. Body-shape performance acquires the most improvement of 18%, followed by effort. This study provides a new research method for evaluation and training of dance movements. © 2017 Eastern Macedonia and Thrace Institute of Technology.

关键词： Virtual reality

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The applicaiton of calculus on runtime verification

The applicaiton of calculus on runtime verification

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2010 2nd International Conference on Signal Processing Systems, ICSPS 2010

作者： Xie, Ruiyun Hai, Benzhai Guo, Zuhua Shao, Mingzhu Dep. of Computer Science and Technology Henan Mechanical and Electrical Engineering College Xinxiang China Dep. of Computer Science and Technology Henan Normal University Xinxiang China

ISBN: (纸本)9781424468911

In this paper, a uniform calculus-based approach for synthesizing monitors checking correctness properties specified by a large variety of logics at runtime is provided, including future and past time logics, interval logics, state machine and parameterized temporal logics. We present a calculus mechanism to synthesize monitors from the logical specification for the incremental analysis of execution traces during test and real run. The monitor detects both good and bad prefix of a particular kind, namely those that are informative for the property under investigation. We elaborate the procedure of calculus as monitors. © 2010 IEEE.

关键词： Calculations

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An efficient microaggregation algorithm for mixed data

An efficient microaggregation algorithm for mixed data

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International Conference on computer science and Software engineering, CSSE 2008

作者： Cen, Ting-Ting Han, Jian-Min Yu, Hui-Qun Yu, Juan Dep. of Math Physics and Information Engineering College of Zhejiang Normal University Jinhua 321004 China Dep. of Computer Science and Engineering East China University of Sci and Tech Shanghai 200237 China

ISBN: (纸本)9780769533360

Microaggregation is an important technique to the k-anonymized datasets. However, most existing microaggregation algorithms to achieving k-anonymity have some defects on distance measurement for categorical and mixed data. In this paper, we introduce a categorical data semantic hierarchy to their distance measurement to improve clustering quality. The paper also investigates mixed distance for mixed data and designs an efficient microaggregation algorithm for them. Experiments show that the distance measurement for categorical data cause less distortion, and the improved microaggregation algorithm based on the mixed distance enjoys better clustering quality than the traditional MDAV algorithm. © 2008 IEEE.

关键词： Semantics

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