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International Conference on computer Supported Cooperative Work in Design

作者： Vivacqua, Adriana S. Borges, Marcos R.S. PPGI/DCC-IM - Graduate Program in Informatics Department of Computer Science Institute of Mathematics UFRJ - Federal University of Rio de Janeiro Rio de Janeiro Brazil PPGI/DCC-IM - Graduate Program in Informatics Department of Computer Science Institute of Mathematics NCE - Electronic Computing Institute UFRJ - Federal University of Rio de Janeiro Rio de Janeiro Brazil

ISBN: (纸本)9781424467631

Collective Intelligence has received much attention in recent years, as organizations and businesses discover the power of crowds. With new technologies, such as blogs, twitter, wikis, photo sharing, collaborative tagging and social networking sites, people may create and disseminate content as never before. Many organizations are looking for ways to harness this power, which is being called collective intelligence. Additionally, many open-source initiatives have shown that it is possible to obtain high quality results from collectively produced work. In this paper, we consider the domain of emergency response. We have been working in this domain for a few years now, mostly focusing on small disaster relief groups and field command. One of the command problems is lack of information about the location where the disaster occurred. We believe some of this information could be crowdsourced, changing current practices and enabling more effective response to the situation. In this paper, we discuss the possibilities for crowdsourcing and present an initial proposal for harnessing collective intelligence for the fire department. © 2010 IEEE.

关键词： Emergency services

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Capture, recognition, and visualization of human semantic interactions in meetings

Capture, recognition, and visualization of human semantic in...

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8th IEEE International Conference on Pervasive computing and Communications, PerCom 2010

作者： Yu, Zhiwen Yu, Zhiyong Aoyama, Hideki Ozeki, Motoyuki Nakamura, Yuichi Shool of Computer Science Northwestern Polytechnical University China Academic Center for Computing and Media Studies Kyoto University Japan Graduate School of Science and Technology Kyoto Institute of Technology Japan

ISBN: (纸本)9781424453290

Human interaction is one of the most important characteristics of group social dynamics in meetings. In this paper, we propose an approach for capture, recognition, and visualization of human interactions. Unlike physical interactions (e.g., turn-taking and addressing), the human interactions considered here are incorporated with semantics, i.e., user intention or attitude toward a topic. We adopt a collaborative approach for capturing interactions by employing multiple sensors, such as video cameras, microphones, and motion sensors. A multimodal method is proposed for interaction recognition based on a variety of contexts, including head gestures, attention from others, speech tone, speaking time, interaction occasion (spontaneous or reactive), and information about the previous interaction. A support vector machines (SVM) classifier is used to classify human interaction based on these features. A graphical user interface called MMBrowser is presented for interaction visualization. Experimental results have shown the effectiveness of our approach. ©2009 IEEE.

关键词： Video cameras

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Low-cost and wearable healthcare monitoring system for pulse analysis in traditional Chinese medicine

Low-cost and wearable healthcare monitoring system for pulse...

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2010 IEEE 7th International Conference on Mobile Adhoc and Sensor Systems, MASS 2010

作者： Gong, Jibing Lu, Shilong Wang, Rui Cui, Li Institute of Computing Technology Chinese Academy of Sciences China Department of Computer Science and Engineering Yanshan University China Graduate University of Chinese Academy of Sciences China

ISBN: (纸本)9781424474882

To meet the increasing needs of home-based healthcare, we propose a novel networked low-cost and wearable healthcare monitoring system, namely TCM-PCA, for pulse analysis in Traditional Chinese Medicine(TCM). The unique innovations of the system are as follows: (1) We propose a novel adaptive features extraction algorithm for pulse waveform to improve physiological feature extraction accuracy of sensed pulse waveform data. (2) We propose a light-weight information fusion framework for human symptom identification according to our previous work. (3) We present a robust external pressure control algorithm for pulse measure to obtain stable pulse waveform data on the pulse-sensor nodes. In this demo, we will demonstrate the working procedure of the system and prove the innovations summarized above. ©2010 IEEE.

关键词： Sensor nodes

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Replication-based highly available metadata management for cluster file systems

Replication-based highly available metadata management for c...

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作者： Chen, Zhuan Xiong, Jin Meng, Dan National Research Center for Intelligent Computing Systems Institute of Computing Technology Chinese Academy of Sciences China Graduate University of Chinese Academy of Sciences China Department of Computer Science University of Rochester United States

ISBN: (纸本)9780769542201

In cluster file systems, the metadata management is critical to the whole system. Past researches mainly focus on journaling which alone is not enough to provide high-available metadata service. Some others try to use replication, but the extra latency accompanied is a main problem. To guarantee both availability and efficiency, we propose a mechanism for building highly available metadata servers based on replication, which integrates Paxos algorithm effectively into metadata service. The Packed Multi-Paxos is proposed to reduce the latency brought by replication, which is self-adaptive and can make the replication to achieve high throughput under heavy client load and low latency under light client load. By designing efficient architecture and coordination mechanism, all replica server nodes simultaneously provide metadata read-access service. This high-available mechanism could decrease the impact of server failures and there is no interruption of service. The performance results show that the latency caused by replication and redundancy is well under control, and the performance of metadata read operation gains improvement. © 2010 IEEE.

关键词： Metadata

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Modeling style and variation in human motion

Modeling style and variation in human motion

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ACMSIGGRAPH/Eurographics Symposium on computer Animation, SCA 2010

作者： Ma, Wanli Xia, Shihong Hodgins, Jessica K. Yang, Xiao Li, Chunpeng Wang, Zhaoqi Institute of Computing Technology Chinese Academy of Sciences China Graduate University of Chinese Academy of Sciences China School of Computer Science Carnegie Mellon University United States

ISBN: (纸本)9783905674279

Style and variation are two vital components of human motion: style differentiates between examples of the same behavior (slow walk vs. fast walk) while variation differentiates between examples of the same style (vigorous vs. lackadaisical arm swing). This paper presents a novel method to simultaneously model style and variation of motion data captured from different subjects performing the same behavior. An articulated skeleton is separated into several joint groups, and latent variation parameters are introduced to parameterize the variation of each partial motion. The relationships between user-defined style parameters and latent variation parameters are represented by a Bayesian network that is automatically learned from example motions. The geostatistical model, named universal Kriging, is extended to be a style-and-variation interpolation to generate partial motions for all joint groups. Experiments with sideways stepping, walking and running behaviors have demonstrated that the motion sequences synthesized by our method are smooth and natural, while their variations can be easily noticed even when their input style parameters are the same. © The Eurographics Association 2010.

关键词： Bayesian networks

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3-3 Multimedia information hiding

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Journal of the National institute of Information and Communications Technology 2011年第1-2期58卷 183-194页

作者： Takizawa, Osamu Sonoda, Kotaro Yoshioka, Katsunari Suzuki, Jouji Disaster Management and Mitigation Group Japan Security Fundamentals Group Information Security Research Center Japan Computer and Information Science Program Faculty of Engineering Nagasaki University Japan Disaster Management and Mitigation Group Information Security Research Center Japan Interdisciplinary Research Center Yokohama National University Japan Network Security Incident Response Group Information Security Research Center Japan Technology Transfer Promotion Office Outcome Promotion Department Japan Graduate School Research Institute of Environment and Information Sciences Yokohama National University Japan

We research the multimedia information hiding (MIH) which is a technology to overlay digital information on multimedia contents such as picture, sound, document, etc. As application to disaster management of MIH, we have developed a new technology called "PAIH" (Public Address Information Hiding) which is a technology to overlay information such as position or destination on siren sound of urgent vehicles. Siren sound is allowed to degrade of sound quality, but PAIH is required to decode correct information from siren sound with pitch shift (Doppler effect) or under noisy environment.

关键词： Disasters

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Testable critical path selection considering process variation

Testable critical path selection considering process variati...

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作者： Fu, Xiang Li, Huawei Li, Xiaowei Key Laboratory of Computer System and Architecture Institute of Computing Technology Chinese Academic of Science Beijing 100190 China Graduate University of Chinese Academic of Sciences Beijing 100039 China

Critical path selection is very important in delay testing. Critical paths found by conventional static timing analysis (STA) tools are inadequate to represent the real timing of the circuit, since neither the testability of paths nor the statistical variation of cell delays caused by process variation is considered. This paper proposed a novel path selection method considering process variation. The circuit is firstly simplified by eliminating non-critical edges under statistical timing model, and then divided into sub-circuits, while each sub-circuit has only one prime input (PI) and one prime output (PO). Critical paths are selected only in critical sub-circuits. The concept of partially critical edges (PCEs) and completely critical edges (CCEs) are introduced to speed up the path selection procedure. Two path selection strategies are also presented to search for a testable critical path set to cover all the critical edges. The experimental results showed that the proposed circuit division approach is efficient in path number reduction, and PCEs and CCEs play an important role as a guideline during path selection. Copyright © 2010 The institute of Electronics.

关键词： Delay circuits

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Identifying machine query for an intelligent web browser system

Identifying machine query for an intelligent web browser sys...

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IEEE Symposium on Web Society

作者： Zhu, Tingshao Xu, Xinguo Liu, Guohua Graduate University of Chinese Academy of Sciences Beijing China National Computer System Engineering Research Institute of China Beijing China Department of Computing Science University of Alberta Edmonton Canada

ISBN: (纸本)9781424463572

This paper describes our research on learning browsing behavior model for predicting the current information need of a web user. This inference is based on a parameterized model of how the sequence of browsing behavior indicates the degree to which page content satisfies the user's information need, and the model parameters can be estimated using standard methods from a labelled corpus. Data from lab experiments demonstrate that the prediction model can effectively identify the information needs of new users, browsing previously unseen pages. The paper concludes with an overview of our WebIC which integrates the model into a web browser, to help the user find the relevant information effectively from the web. © 2010 IEEE.

关键词： Web browsers

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Adult image detection combining BoVW based on region of interest and color moments

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作者： Yizhi, Liu Shouxun, Lin Sheng, Tang Yongdong, Zhang Laboratory of Advanced Computing Research Institute of Computing Technology Chinese Academy of Sciences Beijing 100190 China Graduate University of the Chinese Academy of Sciences Beijing 100039 China Institute of Computer Science and Engineering Hunan University of Science and Technology Xiangtan 411201 China

ISBN: (纸本)3642163262

To prevent pornography from spreading on the Internet effectively, we propose a novel method of adult image detection which combines bag-of-visual-words (BoVW) based on region of interest (ROI) and color moments (CM). The goal of BoVW is to automatically mine the local patterns of adult contents, called visual words. The usual BoVW method clusters visual words from the patches in the whole image and adopts the weighting schemes of hard assignment. However, there are many background noises in the whole image and soft-weighting scheme is better than hard assignment. Therefore, we propose the method of BoVW based on ROI, which includes two perspectives. Firstly, we propose to create visual words in ROI for adult image detection. The representative power of visual words can be improved because the patches in ROI are more indicative to adult contents than those in the whole image. Secondly, soft-weighting scheme is adopted to detect adult images. Moreover, CM is selected by evaluating some commonly-used global features to be combined with BoVW based on ROI. The experiments and the comparison with the state-of-the-art methods show that our method is able to remarkably improve the performance of adult image detection. © 2010 IFIP.

关键词： Color

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QSynth: A tool for QoS-aware automatic service composition

QSynth: A tool for QoS-aware automatic service composition

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2010 IEEE 8th International Conference on Web Services, ICWS 2010

作者： Jiang, Wei Zhang, Charles Huang, Zhenqiu Chen, Mingwen Hu, Songlin Liu, Zhiyong Institute of Computing Technology Chinese Academy of Sciences Beijing China Graduate University Chinese Academy of Sciences Beijing China Department of Computer Science and Engineering Hong Kong University of Science and Technology Hong Kong Hong Kong

ISBN: (纸本)9780769541280

With the proliferation of Web services, service engineers demand good automatic service composition algorithms that not only synthesize the correct work plans from thousands of services but also satisfy the quality requirements of the users. Our observation is that conventional approaches suffer from serious limitations in scalability and accuracy when addressing both requirements simultaneously. We have designed and implemented a tool QSynth to use QoS objectives of service requests as the search directives. This approach effectively prunes the search space and significantly improves the accuracy of the search results. Evaluations show that, compared to the state of the art, QSynth achieves superior scalability and accuracy with respect to a large variety of composition scenarios. Our design of QSynth won the performance championship of Web Services Challenge 2009. © 2010 IEEE.

关键词： Web services

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