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2009 Ninth International Conference on Hybrid Intelligent systems(第九届混合智能系统国际会议 HIS 2009)

作者： Ladda Suanmali Naomie Salim Mohammed Salem Binwahlan Faculty of Science and Technology Suan Dusit Rajabhat University Bangkok Thailand 10300 Faculty of Computer Science and Information System Universiti Teknologi Malaysia 81310

The scoring mechanism of the text features is the unique way for determining the key ideas in the text to be presented as text summary. The efficiency of the technique used for scoring the text sentences could produce good summary. The feature scores are imprecise and uncertain, this marks the differentiation between the important features and unimportant is difficult task. In this paper, we introduce fuzzy logic to deal with this problem. Our approach used important features based on fuzzy logic to extract the sentences. In our experiment, we used 30 test documents in DUC2002 data set. Each document is prepared by preprocessing process: sentence segmentation, tokenization, removing stop word, and word stemming. Then, we use 9 important features and calculate their score for each sentence. We propose a method using fuzzy logic for sentence extraction and compare our results with the baseline summarizer and Microsoft Word 2007 summarizers. The results show that the highest average precision, recall, and F-measure for the summaries were obtained from fuzzy method.

关键词： fuzzy logic sentence features text summarization

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Cache-conscious Feature Construction for Breast Abnormality Detection

Cache-conscious Feature Construction for Breast Abnormality ...

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International Conference on computer Engineering and Applications（ICCEA 2009）

作者： Visanu Changniam Juggapong Natwichai Information System Faculty of Business Administration and Liberal Art Ragamangala University of Technology Lanna Computer Engineering Department Faculty of Engineering Chiang Mai University

Breast cancer has been a cause of women-mortality for many *** is one of the best means to help radiologists to detect the calcification,an indicator for the abnormality,because a very small calcification(1-3 millimeters) can even be *** are many classification methods proposed for such the detection task,however,its efficiency in data preparation and training phases needs to be *** this paper,we propose to investigate the possibilities to solve the efficiency problem using cache-conscious approach,without any compromise on the *** apply two cache-conscious techniques,*** re-blocking,and loop fusion to improve the efficiency on a sub-process of the classifier *** main aim of such the techniques is to fetch the cpu-needed data to suit the cache size as much as *** the aim will result in a high cache-hit-rate,and thus improve the efficiency.A preliminary experiment is conducted on the Sobel edge detection sub-process to validate the efficiency our *** the results,we can reduce the time used in the process by 68%,with the L2 cache-miss-rate decreased by 10%.

关键词： Feature Extraction,Cache Conscious,Breast Abnormality Detection,Sobel Edge Detection

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Dijkstra beats genetic algorithm: Integrating uncomfortable intersection-turns to subjectively optimal route selection

Dijkstra beats genetic algorithm: Integrating uncomfortable ...

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IEEE 7th International Conference on Computational Cybernetics, ICCC 2009

作者： Kambayashi, Yasushi Yamachi, Hidemi Tsujimura, Yasuhiro Yamamoto, Hisashi Department of Computer and Information Engineering Nippon Institute of Technology 4-1 Gakuedai Miyashiro-cho Minamisaitama-gun Saitama 345-8501 Japan Faculty of System Design Tokyo Metropolitan University 6-6 Asahigaoka Hino City Tokyo 191-0065 Japan

ISBN: (纸本)9781424453115

Route selection is one of the most important problems for a car navigation system. Given a pair of origin and destination, there are many possible routes. Most current car navigation systems propose the shortest path from the origin to the destination. Selecting the shortest path is not a hard problem, but the shortest path is not always what the user wants;what the user really wants to have is the most comfortable route for him or her to drive. In other words, the driver wants to have a car navigation system to propose the subjectively optimal route for him or her. Finding such a route requires enumerating all the possible routes, and is known as a NP-complete problem. In order to reduce computational complexity, we employed a GA to find a (subjectively) quasi-optimal route for the driver. In the previous paper, we reported our attempt to integrate uncomfortable-turns to our GA-based route selection algorithm. Even though GA provided a quasi-optimal route in most cases and certainly much faster than exhaustive search, we have found that the classical Dijkstra algorithm can be used to find subjectively the most comfortable route by changing the data structure. In this paper, we show how the data structure that represents routes can be modified to assist Dijkstra's algorithm to find subjectively optimal driving route. The numerical experiments demonstrate the feasibility of our route selection based on Dijkstra algorithm with extended data structure. ©2009IEEE.

关键词： Data structures

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Development of electric wheelchair interface based on laser pointer

Development of electric wheelchair interface based on laser ...

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SICE Annual Conference

作者： Yoshihisa Fukuda Yosuke Kurihara Kazuyuki Kobayashi Kajiro Watanabe Department of System Engineering Faculty of Engineering Hosei University Tokyo Japan Department of Computer and Information Science Faculty of Science and Technology Seikei University Tokyo Japan

The rapidly aging society in Japan has resulted in an increased demand for electric wheelchairs to enhance the mobility of elderly persons. However, the increased use of electric wheelchairs means an increase in the number of accidents related to wheelchair operation errors. The majority of errors involve the joystick interface because its controllability is highly sensitive and not very intuitive compared to the vehicle-type interface. This paper describes a newly developed intuitive electric wheelchair interface that uses a laser pointer. The direction of the laser pointer is automatically detected by camera and analyzed for movement direction. To ensure smooth driving by using the laser pointer, we apply fuzzy logic. To confirm the proposed method, several simulations were conducted and examined.

关键词： Wheelchairs Optical control Automatic control Accidents Digital cameras Control systems Aging Error correction Fuzzy logic Laser theory

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The Application of Genetic Algorithm into Membership Function FLC Used Floating Point

The Application of Genetic Algorithm into Membership Functio...

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Japan-China Joint Workshop on Frontier of computer Science and technology (FCST)

作者： Ismail Yusuf Nanna Suryana Herman Siti Maryam Hj Shamsuddin Faculty of Information and Communication Technology Technical University of Malaysia Malacca Malacca Malaysia Faculty of Information and Communication Technology UTeM Melaka Malacca Malaysia Faculty of Computer Science and Information System UTM Skudai Johor Malaysia

This study investigates the use of Genetic Algorithms (GA) to the design and implementation of Fuzzy Logic Controllers (FLC). A fuzzy logic is fully defined by its membership function. What is the best to determine the membership function is the first question that has been tackled. Thus it is important to select the accurate membership functions but these methods possess one common weakness where conventional FLC use membership function generated by human operators. The membership function selection process is done with trial and error and it runs step by step which is too long in completing the problem. This research develops a system that may help users to determine the membership function of FLC using the technique of GA optimization for the fastest processing in completing the problems. The data collection is based on the simulation results and the results refer to the transient response specification is maximum overshoot. From the results presented, the system which we developed is very helpful to determine membership function and it is clear that GA is very promising in improving the performance of the FLC to get more accurate in order to find the optimum result.

关键词： Genetic algorithms Temperature control Temperature sensors Fuzzy logic Control systems Automatic control Humans Electrical equipment industry Industrial control Manufacturing industries

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Using Principal Component Analysis and Hidden Markov Model for Hand Recognition systems

Using Principal Component Analysis and Hidden Markov Model f...

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International Conference on Information and Multimedia technology (ICIMT)

作者： Abd Manan Ahmad Abdullah Bade Luqman Al-Hakim Zainal Abidin Faculty of Computer Science and Information System Universiti Teknologi Malaysia Johor Malaysia Faculty of Information Technology and Multimedia Universiti Tun Hussein Onn Malaysia Johor Malaysia

There are many approaches and algorithms that can be used to recognize and synthesize the hands gesture. Each approach has its own advantages and characteristics. This paper describes the usage of hidden Markov models (HMM) and principal component analysis (PCA) in recognizing hands gesture by two different researches. The limitations of each techniques and comparisons between each other will be detailed below.

关键词： Principal component analysis Hidden Markov models Statistics Communications technology Problem-solving Testing Visualization Education Courseware Information technology

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Threats to Health Information Security

Threats to Health Information Security

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The Fifth International Conference on Information Assurance and Security(第五届信息保障与安全国际会议)

作者： Ganthan Narayana Samy Rabiah Ahmad Zuraini Ismail Department of Computer Systems and Communications Faculty of Computer Science and Information System Centre for Advanced Software Engineering (CASE) Faculty of Computer Science and Information Systems Department of Science College of Science and Technology Universiti Teknologi Malaysia (UTM) Malaysia

ISBN: (纸本)9781424451012

The purpose of this paper is to identify the threats that exist in Healthcare Information systems (HIS). The study has been carried out in three different departments namely, Information technology Department (ITD), Medical Record Department (MRD) and X-Ray Department in one of the leading government supported hospital in Malaysia. The hospital was equipped with Total Hospital Information system (THIS) environment. The data were collected using in-depth structured interviews. The study identified 22 types of threats according to major threat categories based on ISO/IEC 27002 (ISO 27799:2008). The result shows the most critical threat for the THIS is the power failure. In addition, acts of human error or failure threat also show high frequency of occurrence. The contribution of the paper will be categorization of threats in HIS and can be used to design and implement effective security systems and policies in healthcare setting.

关键词： Threats Healthcare Information systems (HIS) Information Security Risk Analysis

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A novel digital watermarking technique based on ISB (Intermediate Significant Bit)

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World Academy of Science, Engineering and technology 2009年 38卷 1080-1087页

作者： Zeki, Akram M. Manaf, Azizah A. Faculty of Computer Science and Information System University Technology Malaysia UTM Skudai 81310 Johor Malaysia College of Science and Technology University Technology Malaysia City Campus Jalan Semarak 54100 Kuala Lumpur Malaysia

Least Significant Bit (LSB) technique is the earliest developed technique in watermarking and it is also the most simple, direct and common technique. It essentially involves embedding the watermark by replacing the least significant bit of the image data with a bit of the watermark data. The disadvantage of LSB is that it is not robust against attacks. In this study intermediate significant bit (ISB) has been used in order to improve the robustness of the watermarking system. The aim of this model is to replace the watermarked image pixels by new pixels that can protect the watermark data against attacks and at the same time keeping the new pixels very close to the original pixels in order to protect the quality of watermarked image. The technique is based on testing the value of the watermark pixel according to the range of each bit-plane.© 2009 ***.

关键词： Pixels

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Solving linear ordinary differential equations using singly diagonally implicit runge-kutta fifth order five-stage method

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WSEAS Transactions on Mathematics 2009年第8期8卷 393-402页

作者： Ismail, Fudziah Jawias, Nur Izzati Che Suleiman, Mohamed Jaafar, Azmi Department of Mathematics Faculty of Science University Putra Malaysia 43400 Serdang Selangor Malaysia Department of Information System Faculty of Computer Science and Information Technology University Putra Malaysia 43400 Serdang Selangor Malaysia

We constructed a new fifth order five-stage singly diagonally implicit Runge-Kutta (DIRK) method which is specially designed for the integrations of linear ordinary differential equations (LODEs). The restriction to linear ordinary differential equations (ODEs) reduces the number of conditions which the coefficients of the Runge-Kutta method must satisfy. The best strategy for practical purposes would be to choose the coefficients of the Runge-Kutta methods such that the error norm is minimized. Thus, here the error norm obtained from the error equations of the sixth order method is minimized so that the free parameters chosen are obtained from the minimized error norm. The stability aspect of the method is also looked into and found to have substantial region of stability, thus it is stable. Then a set of test problems are used to validate the method. Numerical results show that the new method is more efficient in terms of accuracy compared to the existing method.

关键词： Runge Kutta methods

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Object detection and modeling algorithm for automatic visual people counting system

Object detection and modeling algorithm for automatic visual...

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International Conference on Electrical Engineering/Electronics, computer, Telecommunications and Information technology, ECTI-CON

作者： Kulrapat Jaijing Pakorn Kaewtrakulpong Supakorn Siddhichai Department of Computer Engineering Department of Instrumentation and Control System Engineering Faculty of Engineering King Mongkut's University of Technology Thonburi Bangkok Thailand National Electronics and Computer Technology Center Pathum Thani Thailand

This paper presents object detection and modeling algorithm for automatic visual people counting system to identify individuals from top view images acquired from an overhead surveillance camera. This work proposes Snake algorithm with effective external energy function and a half-circle template initialization for modeling passengers. The experiment result showed that the proposed method could fit the Snake to the head and shoulder boundaries of the passengers effectively. Fitting error of 3.76 pixels per control point was obtained in our experiment. The information is not only useful for verifying humans but also for extracting appearance features to enhance performance of the subsequent tracking algorithm.

关键词： Object detection Cameras Head Humans Data mining Surveillance Feature extraction Image segmentation Counting circuits computer errors

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