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International Conference on Cyber-Enabled Distributed Computing and Knowledge Discovery, CyberC

作者： Tiantian Gao Zhiqiang Yang Heng Wang Graphics Interaction Laboratory Key Laboratory of Machine Perception and Intelligence (MOE)Department of Computer Science Peking University Beijing China

SMS communication is gaining increasing popularity in people's daily life. Along with the growing number of times people sending and receiving SMSs every day, there are also increasing unwanted interruption to people when they are busy with their work or feel less receptive to unimportant messages. Unfortunately, current SMS systems are unable to present notifications according to user's states and willingness of being interrupted. In this work, we develop a SMS system that intelligently determines a good way to present notifications to the user at a suitable time. A decision module is made to analyze the message content, the relation between the sender and the user, and the user state when a new message comes. The results of the decision module are used to implement a nicer notification and to reduce interruptions to a user's ongoing tasks.

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Robotic-surgical instrument wrist pose estimation

Robotic-surgical instrument wrist pose estimation

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Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC)

作者： Stephan Fabel Kyungim Baek Peter Berkelman Human-Robot Interaction Laboratory Department of Information and Computer Sciences University of Hawaii Mānoa Honolulu HI USA Human-Robot Interaction Laboratory Department of Mechanical Engineering University of Hawaii Mānoa Honolulu HI USA

The Compact Lightweight Surgery Robot from the University of Hawaii includes two teleoperated instruments and one endoscope manipulator which act in accord to perform assisted interventional medicine. The relative positions and orientations of the robotic instruments and endoscope must be known to the teleoperation system so that the directions of the instrument motions can be controlled to correspond closely to the directions of the motions of the master manipulators, as seen by the the endoscope and displayed to the surgeon. If the manipulator bases are mounted in known locations and all manipulator joint variables are known, then the necessary coordinate transformations between the master and slave manipulators can be easily computed. The versatility and ease of use of the system can be increased, however, by allowing the endoscope or instrument manipulator bases to be moved to arbitrary positions and orientations without reinitializing each manipulator or remeasuring their relative positions. The aim of this work is to find the pose of the instrument end effectors using the video image from the endoscope camera. The P3P pose estimation algorithm is used with a Levenberg-Marquardt optimization to ensure convergence. The correct transformations between the master and slave coordinate frames can then be calculated and updated when the bases of the endoscope or instrument manipulators are moved to new, unknown, positions at any time before or during surgical procedures.

关键词： Instruments Endoscopes Estimation Robot kinematics Manipulators Three dimensional displays

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From keyword search to exploration: Designing future search interfaces for the web

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Foundations and Trends in Web science 2010年第1期2卷 1-97页

作者： Wilson, Max L. Kules, Bill Schraefel, M.C. Shneiderman, Ben Group School of Electronics and Computer Science University of Southampton Southampton SO17 1BJ United Kingdom School of Library and Information Science Catholic University of America Washington DC 20064 United States Department of Computer Science Human-Computer Interaction Laboratory University of Maryland College Park MD 20742 United States

This monograph is directed at researchers and developers who are designing the next generation of web search user interfaces, by focusing on the techniques and visualizations that allow users to interact with and have control over their findings. Search is one of the keys to the Web's success. The elegant way in which search results are returned has been well researched and is usually remarkably effective. However, the body of work produced by decades of research into information retrieval continues to grow rapidly and so it has become hard to synthesize the current state-of-the-art to produce a search interface that is both highly functional, but not cluttered and distracting. Further, recent work has shown that there is substantial room for improving the support provided to users who are exhibiting more exploratory forms of search, including when users may need to learn, discover, and understand novel or complex topics. Overall, there is a recognized need for search systems to provide effective user experiences that do more than simply return results. With the aim of producing more effective search interfaces, human computer interaction researchers and web designers have been developing novel interactions and features that enable users to conveniently visualize, parse, manipulate, and organize their Web search results. For instance, while a simple set of results may produce specific information (e.g., the capital of Peru), other methods may let users see and explore the contexts of their requests for information (more about the country, city, and nearby attractions), or the properties that associate groups of information assets (grouping hotels, restaurants, and attractions by their type, district, or price). Other techniques support information-seeking processes that may last weeks or months or may even require collaboration between multiple searchers. The choice of relevant result visualization strategies in new search systems should reflect the searchers and th

关键词： Information retrieval

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Qualitative, quantitative, and data mining methods for analyzing log data to characterize students' learning strategies and behaviors

Qualitative, quantitative, and data mining methods for analy...

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9th International Conference of the Learning sciences, ICLS 2010

作者： Baker, Ryan S.J.D. Gobert, Janice D. Van Joolingen, Wouter Azevedo, Roger Roll, Ido São Pedro, Michael Raziuddin, Juelaila Krach, Nathan De Carvalho, Adriana M.J.B. Raspat, Jay Aleven, Vincent Corbett, Albert T. Koedinger, Kenneth R. Cocea, Mihaela Hershkovitz, Arnon Witherspoon, Amy Chauncey, Amber Lintean, Mihai Cai, Zhiqiang Rus, Vasile Greesser, Arthur Department of Social Science and Policy Studies Worcester Polytechnic Institute United States Department of Computer Science Worcester Polytechnic Institute United States University of Twente Netherlands Department of Psychology and Computer Science Institute for Intelligent Systems University of Memphis United States Carl Wieman Science Education Initiative Department of Physics and Astronomy University of British Columbia Canada Pittsburgh Science of Learning Center Human-Computer Interaction Institute Carnegie Mellon University United States London Knowledge Lab. Birkbeck College University of London United Kingdom Knowledge Technology Lab. School of Education Tel Aviv University Israel

This symposium addresses how different classes of research methods, all based upon the use of log data from educational software, can facilitate the analysis of students' learning strategies and behaviors. To this end, four multi-method programs of research are discussed, including the use of qualitative, quantitative-statistical, quantitative-modeling, and educational data mining methods. The symposium presents evidence regarding the applicability of each type of method to research questions of different grain sizes, and provides several examples of how these methods can be used in concert to facilitate our understanding of learning processes, learning strategies, and behaviors related to motivation, meta-cognition, and engagement. © ISLS.

关键词： Data mining

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PEICS - Towards HCI patterns into engineering of interactive systems 10

PEICS - Towards HCI patterns into engineering of interactive...

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1st International Workshop on Pattern-Driven Engineering of Interactive Computing Systems, PEICS '10, Organized at the 2nd ACM SIGCHI Symposium on Engineering Interactive Computing Systems, EICS '10

作者： Breiner, Kai Seissler, Marc Meixner, Gerrit Forbrig, Peter Seffah, Ahmed Klöckner, Kerstin University of Kaiserslautern Software Engineering Research Group 67663 Kaiserslautern Germany University of Kaiserslautern Center for Human-Machine-Interaction 67663 Kaiserslautern Germany 67663 Kaiserslautern Germany University of Rostock Department of Computer Science 18051 Rostock Germany 1015 Lausanne Switzerland 67663 Kaiserslautern Germany

ISBN: (纸本)9781450302463

Despite intense research activities in the last years, HCI patterns still lack in a standardized description and organization. This makes it difficult for the developers to identify the relevant patterns for solving a problem as well as to apply them accordingly to the problem context. To fully benefit from HCI patterns within the engineering of interactive computer systems they have to be prepared for integration into a model-based user interface development process. This workshop on Pattern-driven Engineering of Interactive computer Systems (PEICS) focuses on bringing together various research approaches in order to be conjointly conductive to the state of the art. We present contributions according to semantics, formalization, languages, support, research directions as well as tools. © 2010 ACM.

关键词： Semantics

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Historical event-based access to museum collections

Historical event-based access to museum collections

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Workshop on Recognising and Tracking Events on the Web and in Real Life, EVENTS 2010 - Located at the 6th Hellenic Conference on Artificial Intelligence, SETN 2010

作者： Van Den Akker, Chiel Aroyo, Lora Cybulska, Agata Van Erp, Marieke Gorgels, Peter Hollink, Laura Jager, Cathy Leĝene, Susan Van Der Meij, Lourens Oomen, Johan Van Ossenbruggen, Jacco Schreiber, Guus Segers, Roxane Vossen, Piek Wielinga, Bob Faculty of Arts VU University Amsterdam Netherlands Department of Computer Science VU University Amsterdam Netherlands Rijksmuseum Amsterdam Netherlands Web Information Systems Group Delft University of Technology Netherlands Netherlands Institute for Sound and Vision Netherlands Amsterdam Netherlands Human-Computer Studies Laboratory University of Amsterdam Netherlands

This paper presents research in the context of two multidisciplinary projects aimed at facilitating the history domain with an automatic approach for event extraction and modelling. To realise this, the Semantics of History project is providing a historical ontology and a lexicon to support the detection of historical events in textual data whilst the Agora project focusses on exploring the modelling aspects of historical events and employing the combined results in an event-driven browse and search approach. Furthermore, the historical events are used as a flexible model to identify semantically relevant relationships between objects in highly diverse museum collections, creating meaningful 'cause' and 'effect' links along the key event dimensions 'who', 'what', 'where' and 'when'. This should finally support the (re)interpretation process of history research, by allowing end-users to create their own personal narratives, leading to theoretical reflection on the meaning of digitally mediated public history in contemporary society. In this paper, we give a high-level overview of the research challenges in the realisation of a desired search and browse scenario. Finally, we outline the open issues and future research.

关键词： Semantics

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Understanding Individual Nodes in Peer-to-Peer Systems

Understanding Individual Nodes in Peer-to-Peer Systems

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International Conference on computer Communications and Networks (ICCCN)

作者： Gyuwon Song Suhyun Kim Sunghwan Jang Daeil Seo Human Computer Interaction and Robotics Department University of Science and Technology Seoul South Korea Imaging Media Center Korea Institute of Science and Technology Seoul South Korea

This paper addresses a simple question: Is there a behavior pattern of an individual node in peer-to-peer systems? It is known that peer-to-peer systems collectively show daily patterns, but the behavior patterns of individual nodes have seldom been studied. If individual nodes have their own behavior patterns with reasonable accuracy, we could greatly improve the efficiency of the system by reducing the overhead to handle unexpected random node failures. Even though there have been many empirical studies on peerto-peer systems, most of them are focusing on a collective view to characterize the whole systems in terms of average availability, average session length, and so on. In this paper we present Peer Availability Table (PAT) which is a model to represent a behavior pattern of an individual node based on the measurement of node availability. To judge the existence of the behavior pattern, we measure the performance of PAT using a binary classification test. By answering the basic question, we provide a useful hint for the design of peer-to-peer systems.

关键词： Peer to peer computing Availability Accuracy Sensitivity Probes Frequency measurement

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Don't slow me down: Bringing energy efficiency to continuous gesture recognition

Don't slow me down: Bringing energy efficiency to continuous...

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International Symposium on Wearable computers

作者： Giuseppe Raffa Jinwon Lee Lama Nachman Junehwa Song Interaction & Experience Research INTEL Research Laboratory Santa Clara CA USA Department of Computer Science Korea Advanced Institute of Science and Technology South Korea

Gesture is a compelling user interaction modality for enabling truly on-the-go interactions. Unlike keyboard and touch screen interactions which require considerable visual attention and impose stringent constrains on the form factor of mobile devices, people can easily use hand gestures to perform simple actions (e.g. retrieve voice mail) without having to slow down. In this paper we present an efficient gesture recognition pipeline optimized for "continuous" recognition while minimizing processing overhead and enhancing usability by not requiring the user to delimit explicitly the start and end of gestures. The pipeline is constructed to allow for early filtering of unwanted sensor data with minimal processing cost, and limiting the invocation of processing intensive stages (i.e. HMM) to a limited subset of data (

关键词： Hidden Markov models Gesture recognition Pipelines Accuracy Filtering Mobile handsets Watches

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Epipolar-Based Stereo Tracking Without Explicit 3D Reconstruction

Epipolar-Based Stereo Tracking Without Explicit 3D Reconstru...

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International Conference on Pattern Recognition

作者： Andre Gaschler Darius Burschka Gregory Hager Department of Computer Science Technische Universitat Munchen Munchen Germany Computational Interaction and Robotics Laboratory Johns Hopkins University Baltimore MD USA

ISBN: (纸本)9781424475421

We present a general framework for tracking image regions in two views simultaneously based on sum-of-squared differences (SSD) minimization. Our method allows for motion models up to affine transformations. Contrary to earlier approaches, we incorporate the well-known epipolar constraints directly into the SSD optimization process. Since the epipolar geometry can be computed from the image directly, no prior calibration is necessary. Our algorithm has been tested in different applications including camera localization, wide-baseline stereo, object tracking and medical imaging. We show experimental results on robustness and accuracy compared to the known ground truth given by a conventional tracking device.

关键词： Tracking Cameras Three dimensional displays Geometry Stereo vision Robustness Argon

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Design to read: Designing for people who do not read easily

Design to read: Designing for people who do not read easily

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28th Annual CHI Conference on human Factors in Computing Systems, CHI 2010

作者： Jarrett, Caroline Petrie, Helen Summers, Kathryn Effortmark Ltd. 16 Heath Road Leighton Buzzard LU7 3AB United Kingdom Human Computer Interaction Research Group Department of Computer Science University of York Heslington York YO10 5DD United Kingdom School of Information Arts and Technologies University of Baltimore 1420 N. Charles St. Baltimore MD 21201 United States

ISBN: (纸本)9781605589312

Many people do not read easily. They may have an impairment such as a visual problem. They may be reading in stressful conditions or poor light, or perhaps they are reading in a second language. Is it possible to provide one consistent set of guidelines or approaches that will allow designers of electronic materials to meet all the apparently diverse needs of these people? Or are there compromises to be made? If so, what are those compromises? © 2010 Copyright is held by the author/owner(s).

关键词： human engineering

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