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On musical stylometry-a pattern recognition approach

On musical stylometry-a pattern recognition approach

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作者： Backer, Eric Kranenburg, Peter Van Faculty of Electrical Engineering Mathematics and Computer Science Delft University of Technology Delft Netherlands Faculty of Arts Department of Musicology University of Utrecht Utrecht Netherlands

In this short communication we describe some experiments in which methods of statistical pattern recognition are applied for musical style recognition and disputed musical authorship attribution. Values of a set of 20 features (also called "style markers") are measured in the scores of a set of compositions, mainly describing the different sonorities in the compositions. For a first study over 300 different compositions of Bach, Handel, Telemann, Mozart and Haydn were used and from this data set it was shown that even with a few features, the styles of the various composers could be separated with leave-one-out-error rates varying from 4% to 9% with the exception of the confusion between Mozart and Haydn which yielded a leave-one-out-error rate of 24%. A second experiment included 30 fugues from J.S. Bach, W.F. Bach and J.L. Krebs, all of different style and character. With this data set of compositions of undisputed authorship, the F minor fugue for organ, BWV 534 (of which Bach's authorship is disputed) then was confronted. It could be concluded that there is experimental evidence that J.L. Krebs should be considered in all probability as the composer of the fugue in question. © 2004 Elsevier B.V. All rights reserved.

关键词： Pattern recognition

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Signals and Systems using MATLAB: an integrated suite of applications for exploring and teaching media signal processing

Signals and Systems using MATLAB: an integrated suite of app...

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Frontiers in Education (FIE) Conference

作者： B.L. Sturm J.D. Gibson Department of Electrical and Computer Engineering and Media Arts & Technology (MAT) University of California슠Santa Barbara Santa Barbara CA USA

Effectively teaching introductory media signal processing (MSP) to students requires a means of communicating complex concepts without advanced mathematics. At the media arts and technology program at UCSB we are teaching graduate media arts students concepts of MSP. These students, while interested in learning how their digital tools work, have an incredibly tough time working through the material the way traditional engineering students do. To address this we have used MATLAB to build a comprehensive suite of exploratory demonstrations and applications tailored to illustrate sophisticated concepts, and to inspire students that may not possess a strong background in mathematics. Our application, "Signals and Systems using MATLAB" (SSUM), is presented here, and its use in a course designed to teach MSP to media arts students is discussed. Its usefulness extends beyond media arts to engineering and computer science curriculum. SSUM can be obtained for free from http://***/***

关键词： Signal processing MATLAB Art Application software Mathematics Digital signal processing engineering students computer science education Educational programs Signal processing algorithms

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Energy-efficient and scalable group key agreement for large ad hoc networks

Energy-efficient and scalable group key agreement for large ...

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PE-WASUN'05 - Second ACM International Workshop on Performance Evaluation of Wireless Ad Hoc, Sensor, and Ubiquitous Networks

作者： Teo, Joseph Chee Ming Tan, Chik How Information Communication Institute of Singapore School of Electrical and Electronic Engineering Nanyang Technological University Singapore 639798 Singapore NISlab Department of Computer Science and Media Technology Gjøvik University College

ISBN: (纸本)1595931821

Wireless ad hoc networks are gaining popularity as these networks are self organizing without requiring fixed infrastructure such as servers or access points. Nodes in wireless ad hoc networks are typically low-power devices and in some large scale ad hoc networks such as wireless sensor networks (WSNs), there might be tens of thousands of low-power energy constrained nodes in the network. In order to secure group communication for a wireless ad hoc network, the low-power nature of the nodes and the network size has to be taken into consideration. In this paper, we propose an energy-efficient and scalable group key agreement (GKA) scheme for wireless ad hoc networks, which uses a generalized circular hierarchical (C-H) group model, where the network is partitioned into subgroups at h different layers and each subgroup is arranged in a circle. Next, we describe the computational and communication energy analysis of a typical node found in ad hoc networks and provide some formulas that can be used to calculate the energy consumption costs for protocols implemented using different microprocessors and radio transceiver modules, A complexity analysis and energy consumption costs analysis conclude that our proposed scheme is the most energy-efficient and scalable GKA scheme as compared to three other GKA protocols. Copyright 2005 ACM.

关键词： Telecommunication networks

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A compact mathematical formulation for shared path protection with general shared risk groups

A compact mathematical formulation for shared path protectio...

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2005 International Conference on Wirelessand Optical Communications Networks

作者： Tapolcai, János Ho, Pin-Han Cinkler, Tibor Department of Telecommunications and Media Informatics Budapest University of Technology and Economics Magyar Tudósok könitja 2 Budapest Hungary Department of Electrical and Computer Engineering University of Waterloo Ont. Canada

ISBN: (纸本)0780390199

This paper provides a compact mathematical formulation for shared protection in communication networks with bandwidth guaranteed tunnels. The formulation is characterized by taking the most general definition of the Shared Risk Group (SRG) with the complete routing information in the single failure scenario, which can facilitate solving the Shared Path Protection Problem on various network topologies and various graph models of networks. The general SRGs are essential for survivable routing in multi-layer grooming networks as well as in multi-domain networks. With the formulation, a general approach and a unified expression for solving the dynamic survivable routing problem can be developed. A case study is given at the end to verify the proposed formulation on a well studied special case, namely protecting against a single node or a single link failure. © 2005 IEEE.

关键词： Wireless telecommunication systems

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A hybrid HMM/DPA adaptive gesture recognition method

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First International Symposium on Advances in Visual Computing, ISVC 2005

作者： Rajko, Stjepan Qian, Gang Dept. of Computer Science and Engineering Arizona State University Tempe AZ 85287 United States Dept. of Electrical Engineering Arizona State University Tempe AZ 85287 United States Arts Media and Engineering Program Arizona State University Tempe AZ 85287 United States

ISBN: (纸本)3540307508

We present a hybrid classification method applicable to gesture recognition. The method combines elements of Hidden Markov Models (HMM) and various Dynamic Programming Alignment (DPA) methods, such as edit distance, sequence alignment, and dynamic time warping. As opposed to existing approaches which treat HMM and DPA as either competing or complementing methods, we provide a common framework which allows us to combine ideas from both HMM and DPA research. The combined approach takes on the robustness and effectiveness of HMMs and the simplicity of DPA approaches. We have implemented and successfully tested the proposed algorithm on various gesture data. © Springer-Verlag Berlin Heidelberg 2005.

关键词： Gesture recognition

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A multiplication-accumulation computation unit with optimized compressors and minimized switching activities

A multiplication-accumulation computation unit with optimize...

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IEEE International Symposium on Circuits and Systems 2005, ISCAS 2005

作者： Chen, Li-Hsun Chen, Oscal T.-C. Wang, Teng-Yi Ma, Yung-Cheng Signal and Media Laboratories Department of Electrical Engineering National Chung Cheng University Chia-Yi 621 Taiwan Computer System Development Dept. Computer and Communications Research Labs. Industrial Technology Research Institute Hsinchu 310 Taiwan

ISBN: (纸本)9780780388345

A low-power Multiplication-Accumulation Computation (MAC) unit using the radix-4 Booth algorithm is proposed in this work, by reducing its architectural complexity and minimizing the switching activities. However, to maintain a high performance, the critical delays and hardware complexities of MAC units are explored to derive at a MAC unit with a high performance and a low hardware complexity. In addition, a carry-save addition operation with optimized compressors is proposed to omit the use of half adders to further reduce the hardware complexity. Furthermore, the scheme to reduce the switching activity is proposed in this work to lower the power consumption of the proposed MAC unit. In performing a MAC for XY+Z, the effective dynamic ranges of X and Y are detected, the one with the smaller effective dynamic range is processed for Booth decoding so as to increase the probability of the partial products being zero, and thus the switching activity of the MAC unit is reduced. Moreover, the effective dynamic range of the result from this multiplication is also estimated and compared with the effective dynamic range of the datum, Z. The larger effective dynamic range of the two data is considered as the effective word length for an addition operation. Pipelined latches are used to make the non-effective operation maintaining the status of the previous operation so to reduce the switching activities from the addition performed in MAC. After the addition operation, sign extension is performed on the result from the effective sign bit copied to non-effective bits to derive at a correct output datum. When comparing to the conventional MAC units, the proposed MAC unit is able to reduce 21.09% to 43.74% of power consumption. Additionally, the proposed MAC unit outperforms the conventional ones in comparing the product of critical delay, area, and power consumption. © 2005 IEEE.

关键词： Electric power utilization

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A Study on Users' Preference on Interruption When Using Wearable computers and Head Mounted Displays

A Study on Users' Preference on Interruption When Using Wear...

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IEEE International Conference on Pervasive Computing and Communications (PerCom)

作者： M. Nilsson M. Drugge U. Liljedahl K. Synnes P. Parnes Department of Computer Science & Electrical Engineering Division of Media Technology Luleå University of Technology Lulea Sweden Department of Computer Science & Electrical Engineering Division of Computer Science and Networking Luleå University of Technology Lulea Sweden

An important part of making a wearable computer unobtrusive is the user interface and the way it interrupts the user. The amount of interruption that have to be made on the users primary task should be minimized. Usage without interruption is of course best for the performance of the primary task but is often not possible as many tasks that the wearable computer is involved in do need interaction with the user. It is therefore important to understand what type of interruption that will benefit the user most. The question about which interruption that causes the least amount of stress for the user is as important as which interruption that gives the best performance. This paper continues on previous work where performance of the users was measured for different types of interruption. In this paper subjective data is analyzed to understand how to build user interfaces for wearable computers and head mounted displays that considers stress and other subjective variables

关键词： Wearable computers computer displays Stress User interfaces Pharmaceutical technology computer science Pervasive computing Data analysis Head Fires

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Power splitters for ultralow refractive index metallic nanostructures waveguides

Power splitters for ultralow refractive index metallic nanos...

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2005 SBMO/IEEE MTT-S International Microwave and Optoelectronic Conference

作者： Rodriguez-Esquerre, V.F. Koshiba, Masanori Hernández-Figueroa, H.E. Rubio-Mercedes, C.E. Division of Media and Network Technologies Hokkaido University Japan Department of Microwave and Optics School of Electrical and Computer Engineering University of Campinas Brazil Center of Exact Sciences and Technology State University of Mato Grosso do Sul Brazil

ISBN: (纸本)0780393422

We investigated power splitters in air core waveguides with a metallic photonic crystal cladding. The mechanism of propagation in these guides is the total external reflection. The cladding is formed by a periodic arrangement of metallic wires on square or triangular lattices. Power splitters can be designed by modifying the geometry at the splitting region by introducing a reflecting structure in order to increase the transmission coefficient. Some splitters based on these structures are analyzed by an efficient frequency domain finite element approach. © 2005 IEEE.

关键词： Optical beam splitters

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Affective dialogue communication system with emotional memories for humanoid robots

引用

1st International Conference on ffective Computing and Intelligent Interaction, ACII 2005

作者： Ryoo, M.S. Seo, Yong-Ho Jung, Hye-Won Yang, H.S. Artificial Intelligence and Media Laboratory Department of Electrical Engineering and Computer Science Korea Advanced Institute of Science and Technology 373-1 Guseong-dong Yuseong-gu Daejeon 305-701 Korea Republic of CVRC University of Texas Austin

ISBN: (纸本)3540296212

Memories are vital in human interactions. To interact sociably with a human, a robot should not only recognize and express emotions like a human, but also share emotional experience with humans. We present an affective human-robot communication system for a humanoid robot, AMI, which we designed to enable high-level communication with a human through dialogue. AMI communicates with humans by preserving emotional memories of users and topics, and it naturally engages in dialogue with humans. Humans therefore perceive AMI to be more human-like and friendly. Thus, interaction between AMI and humans is enhanced. © Springer-Verlag Berlin Heidelberg 2005.

关键词： Intelligent robots

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Effective memory reduction scheme used for reference frames in H.264/AVC video codec

Effective memory reduction scheme used for reference frames ...

引用

2005 IEEE International 48th Midwest Symposium on Circuits and Systems, MWSCAS 2005

作者： Chen, Chih-Chang Chen, Sheng-Shiung Chen, Oscal T.-C. Chen, Chien-Fa Chen, Fang-Chu Signal and Media Laboratories Dept. of Electrical Engineering National Chung Cheng Univ. Taiwan Digital Signal Processing Tech. Dept. of Computer and Communications Research Lab. Industrial Technology Research Institute Taiwan

ISBN: (纸本)0780391977

In the H.264/AVC video codec, multiple reference frames are applied for motion estimation to provide good coding efficiency. However, multiple reference frames also require more memory cost than one reference frame used in a video codec. To minimize the amount of memory requirement, this work proposes to add a decision unit in the H.264/AVC codec to store these reference frames. The said decision unit would look closely at MacroBlock (MB) of the currently decoded frame to determine it's storage type to be compressed or reconstructed data, according to the encoding parameters of subblocks in this MB. Furthermore, an adaptive scheme is proposed to store the currently decoded frame as reconstructed picture for lowering the computational complexity and using the buffer in full. Experimental results reveal that the proposed memory reduction scheme requires lower complexity and better picture quality than the conventional work. Therefore, the proposed memory reduction scheme can be widely used in various applications of the H.264/AVC codec to minimize the memory requirement. © 2005 IEEE.

关键词： Image coding

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