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computer aided composition system with interactive selective population climbing

Computer aided composition system with interactive selective...

引用

2009 WRI World Congress on computer science and Information Engineering, CSIE 2009

作者： Hasui, Hiroshi Muroran Institute of Technology Department of Computer Science and Systems Engineering Language Processing Laboratory 27-1 Mizumoto-cho Muroran Japan

ISBN: (纸本)9780769535074

I am developing the computer aided composition system. This system aids the person, that know the music theory a little, to compose the receiving sign of cellphone, or background music of home page or software. This system is implemented with the interactive selective population climbing. I guess that it is appropriate to fetch the favorite melody by hill climbing, because it is said that the function about favor in the human can express the proximate single-peak function for acceleration. However, the user's favorite melodies are sometimes changed, as the user's favor becomes clear. Thus, the system selects a real parent from many parents in proportion of these estimation values in order to fetch the favorite melody during keeping variety interactively, whenever the system generates neighbor solutions of the real parent. If the value of neighbor solution is higher than one of the real parent, the system exchanges the neighbor solution from the real parent. The composing model generates the neighbor solutions with randomwalk or most likelihood method in order to change the image of the real parent a little. In the experiment, the melody of 8 measures were composed by estimating about 30 melodies and improving about 20 melodies. I assume that my system can compose the melody by less burden than other systems. © 2008 IEEE.

关键词： Computation theory

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An irregular cutting based distributed mapping algorithm for DVE systems

An irregular cutting based distributed mapping algorithm for...

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2009 2nd Asia-Pacific Conference on Computational Intelligence and Industrial Applications, PACIIA 2009

作者： Zhang, Wei Zhou, Hangjun Peng, Yuxing Li, Sikun Xi, Min National Laboratory for Parallel and Distributed Processing School of Computer Science National University of Defense Technology Changsha 410073 China Department of Computer Science Xi'an Jiaotong University Xi'an 710049 China

ISBN: (纸本)9781424446070

Distributed Virtual Environment (DVE) systems have become more and more important both in academic communities and the industries. To guarantee the load constrain, the physical world integrity and the virtual world integrity, the virtual environment should be divided into several parts and mapped to multiple servers, which are located in geographically different places. Many centralized algorithms based on regular cutting method are proposed to solve this problem. However, the dynamic property of clients and distributed property of the system make the existing algorithms unable to undertake it. In this paper, we propose a metric to measure the cutting quality and design a distributed mapping algorithm based on an irregular cutting. Simulation results show that our algorithm greatly decreases the costs of DVE systems for migration of clients and effectively improves the satisfaction degree of users. ©2009 IEEE.

关键词： Virtual reality

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Surveillance of pedestrian bridge traffic using neural networks

Surveillance of pedestrian bridge traffic using neural netwo...

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Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2009

作者： Watkins, Steve E. Stanley, R. Joe Gopal, Anand Moss, Randy H. Department of Electrical and Computer Engineering Applied Optics Laboratory Missouri University of Science and Technology Rolla MO 65409 United States Department of Electrical and Computer Engineering Signal Processing Laboratory Missouri University of Science and Technology Rolla MO 65409 United States

ISBN: (纸本)9780819475527

A computer-vision monitoring system is demonstrated that automatically detects the presence and location of people. The approach investigated the potential for real-time, automated surveillance and tracking in a realistic environment. Economy was obtained by the use of gray-scale, fixed perspective images and efficiency was obtained by the use of selected object features and a neural-network-processing algorithm. The system was applied to pedestrian traffic on an outdoor bridge and consequently had to handle complex images. Image sequences of single and multiple people were used with differences in clothing, position, lighting, season, etc. A two-stage algorithm was implemented in which (1) new objects were identified in a highly variable scene and (2) the objects were classified with a back-propagation neural network. The image processing techniques included segmentation and filtering and the neural network used fourteen object features as inputs. The implementation had excellent people-discrimination accuracy despite the noise in the images and had low computational complexity with respect to alternative techniques. © 2009 SPIE.

关键词： Neural networks

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Improvement of directed diffusion protocol based on data aggregation

Improvement of directed diffusion protocol based on data agg...

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2009 International Conference on Computational science and Engineering, CSE '09

作者： Hui, Chen Yufeng, Shi Ye, Wang Yang, Laurence T. Naixue, Xiong Key laboratory of ministry of education for image processing and intelligent control Huazhong University of Science and Technology Wuhan China Department of Computer Science St Francis Xavier University Canada Department of Computer Science Georgia State University Georgia GA United States

ISBN: (纸本)9780769538235

How to make full use of the limited energy available and prolonging the survival time of node is a major concern in research on Wireless Sensor Networks (WSNs). This paper presented an improved approach based on Directed Diffusion Protocol (DDP) which could meet the features of WSN, such as data-oriented, many-to-one transmissions and low energy costs, together with data aggregation mechanisms which emphasized on cascading timeouts, to eliminate the redundancy caused by the transmission of large amounts of data. This modified protocol prohibited the direct forwarding of central nodes, balancing data traffic of different sensors between the source and the sink, and proved to be able of reducing total network flows, energy consumptions and prolonging the lifetime of the network through simulations.

关键词： Sensor nodes

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Noise reduction algorithm for robust speech recognition using MLP neural network

Noise reduction algorithm for robust speech recognition usin...

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2009 2nd Asia-Pacific Conference on Computational Intelligence and Industrial Applications, PACIIA 2009

作者： Ghaemmaghami, Masoumeh P. Razzazi, Farbod Sameti, Hossein Dabbaghchian, Saeed BabaAli, Bagher Department of Electrical Engineering Science and Research Branch Azad University Tehran Iran Speech Processing Lab. Department of Computer Engineering Sharif University of Technology Tehran Iran

ISBN: (纸本)9781424446070

We propose an efficient and effective nonlinear feature domain noise suppression algorithm, motivated by the minimum mean square error (MMSE) optimization criterion. Multi Layer Perceptron (MLP) neural network in the log spectral domain minimizes the difference between noisy and clean speech. By using this method as a pre-processing stage of a speech recognition system, the recognition rate in noisy environments is improved. We can extend the application of the system to different environments with different noises without re-training it. We need only to train the preprocessing stage with a small portion ofnoisy data which is created by artificially adding different types of noises from the NOISEX-92 database to the TIMIT speech database. Experimental results show that the proposed method can achieve significant improvement ofrecognition rates. ©2009 IEEE.

关键词： Mean square error

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Towards keyword search over relational databases in DHT networks

Towards keyword search over relational databases in DHT netw...

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15th International Conference on Parallel and Distributed Systems, ICPADS '09

作者： Yu, Jian Guan, Jihong Xu, Jianliang Zhou, Shuigeng Department of Computer Science and Technology Tongji University Shanghai 201804 China Department of Computer Science Hong Kong Baptist University Hong Kong Hong Kong Shanghai Key Lab. of Intelligent Information Processing Fudan University Shanghai 200433 China School of Computer Science Fudan University Shanghai 200433 China

ISBN: (纸本)9780769539003

Recent research has shown that keyword search is a friendly and potentially effective way to retrieve information of interest over relational databases. Existing work has generally focused on implementing keyword search in centralized databases. This paper addresses keyword search over distributed databases. We adopts distributed hash tables (DHTs) - a peer-to-peer inspired overlay network technology - as the infrastructure to implement keyword search over relational databases. For this end, we combine IR-based ranking techniques with a P2P-based indexing strategy, and propose an effective approach. Extensive experiments over real-world datasets show that our approach is effective and efficient. © 2009 IEEE.

关键词： Peer to peer networks

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Improving nominal SRL in Chinese language with verbal SRL information and automatic predicate recognition

Improving nominal SRL in Chinese language with verbal SRL in...

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2009 Conference on Empirical Methods in Natural Language processing, EMNLP 2009, Held in Conjunction with ACL-IJCNLP 2009

作者： Li, Junhui Zhou, Guodong Zhao, Hai Zhu, Qiaoming Qian, Peide Jiangsu Provincial Key Lab. for Computer Information Processing Technologies School of Computer Science and Technology Soochow University Suzhou 215006 China Department of Chinese Translation and Linguistics City University of HongKong Hong Kong

This paper explores Chinese semantic role labeling (SRL) for nominal predicates. Besides those widely used features in verbal SRL, various nominal SRL-specific features are first included. Then, we improve the performance of nominal SRL by integrating useful features derived from a state-of-the-art verbal SRL system. Finally, we address the issue of automatic predicate recognition, which is essential for a nominal SRL system. Evaluation on Chinese NomBank shows that our research in integrating various features derived from verbal SRL significantly improves the performance. It also shows that our nominal SRL system much outperforms the state-of-the-art ones. © 2009 ACL and AFNLP.

关键词： Natural language processing systems

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AC magnetic flux profile and critical current density obtained by Campbell's method in polycrystalline MgB2

AC magnetic flux profile and critical current density obtain...

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作者： Ni, Baorong Morita, Yoshihiro Liu, Zhiyong Liu, Cuifang Himeki, Keizo Otabe, Edmund Soji Kiuchi, Masaru Matsushita, Teruo Department of Life Environment and Material Science Fukuoka Institute of Technology Fukuoka 814-0180 Japan Key Laboratory of New Processing Technology for Nonferrous Metals and Materials Guilin University of Technology Guilin Guanxi 541004 China Department of Computer Science and Electronics Kyushu Institute of Technology Fukuoka 812-8581 Japan

In this study, we focused on the estimation of the global critical current density, super-current path, grain connectivity and their relationships with the faults volume fraction in the MgB2 bulks prepared by a modified PIT (powder in tube) method. Campbell's method was applied for the purpose of acquiring the penetrating AC magnetic flux profile and the characteristic of AC magnetic field vs. penetration depth from the specimen's surface. A computer simulation on the penetrating AC flux profile in MgB2 bulks with certain amount of randomly distributed voids, oxidized grains and other faults was also carried out. The global critical current density obtained by Campbell's method turned out to be smaller than that obtained from the SQUID measurement, implying that the global super-current was reduced by the existence of various kinds of faults and the lack of the electrical connectivity between grains. It was verified that the relationship between the global critical current characteristics and the faults contained in specimens can be quantitatively clarified by comparing the simulated critical current densities and other factors with the experimental results. ©2009 IEEE.

关键词： Critical currents

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Fast query over encrypted data based on B+ tree

Fast query over encrypted data based on B+ tree

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2009 International Conference on Apperceiving Computing and Intelligence Analysis, ICACIA 2009

作者： Wang, Zheng-Fei Tang, Ai-Guo Wang, Wei Department of Computer Hunan Business College Changsha 410205 China National Key Laboratory for Parallel and Distributed Processing School of Computer National University of Defense Technology Changsha 410073 China School of Computer Science Fudan University Shanghai 200433 China

ISBN: (纸本)9781424452040

There are a lot of important and sensitive data in databases, which need to be protected from attacks. To secure the data, Cryptography support is an effective mechanism. However, a tradeoff must be made between the performance and the security because encryption and decryption greatly degrade the query performance. In this paper, a framework is proposed that can quickly implement query over encrypted data based on B+ tree. When data are stored in the form of cipher, it not only stores the encrypted data themselves, but also creates a B+ tree index for the data before encrypting them. When querying the encrypted data, firstly, it locates the encrypted records related to the querying predicate based on the B+ tree index;secondly, it decrypts the encrypted records to accomplish the results. Meanwhile, it must encrypt the B+ tree itself to protect it from leaking confidential information. According to the structure of the B+ tree, it encrypts each node of the B+ tree separately. The results of experiments show that the query performance over the encrypted data decreases about 20 percent compared with the plaintext query performance, and validate the functionality and usability of our approach. ©2009 IEEE.

关键词： Cryptography

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Cache-based bounds checking for multi-threaded C programs

Cache-based bounds checking for multi-threaded C programs

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21st IASTED International Conference on Parallel and Distributed Computing and Systems, PDCS 2009

作者： Arahori, Yoshitaka Gondow, Katsuhiko Maejima, Hideo Department of Computer Science Tokyo Institute of Technology 2-12-1 Oookayama Meguro-ku Tokyo 152-8552 Japan Department of Information Processing Tokyo Institute of Technology 4259 Nagatsuda-chou Yokohama-shi Kanagawa 226-8502 Japan

ISBN: (纸本)9780889868113

There have been a large number of bounds checking techniques proposed for C. Among them, the approach proposed by Jones and Kelly (extended by Ruwase and Lam and further extended by Dhurjati and Adve) is the only one we know of that is both backwards-compatible and precise. Even the approach, however, can incur serious compatibility problems with threads. This paper proposes a collection of techniques to avoid such problems. Our experimental results show that our bounds checking is highly compatible with large multi-threaded programs (including Apache 2.2.2) and that it can detect boundary errors caused by them precisely.

关键词： C (programming language)

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