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SoftVis '05 - ACM Symposium on Software Visualization

作者： DeLine, Robert Khella, Amir Czerwinski, Mary Robertson, George Microsoft Research One Microsoft Way Redmond WA 98052 United States Computer Science Department Human Computer Interaction Lab. University of Maryland College park MD 20742 United States

ISBN: (纸本)1595930736

Large software projects often require a programmer to make changes to unfamiliar source code. This paper presents the results of a formative observational study of seven professional programmers who use a conventional development environment to update an unfamiliar implementation of a commonly known video game. We describe several usability problems they experience, including keeping oriented in the program's source text, maintaining the number and layout of open text documents and relying heavily on textual search for navigation. To reduce the cost of transferring knowledge about the program among developers, we propose the idea of wear-based filtering, a combination of computational wear and social filtering. The development environment collects interaction information, as with computational wear, and uses that information to direct the attention of subsequent users, as with social filtering. We present sketches of new visualizations that use wear-based filtering and demonstrate the feasibility of our approach with data drawn from our study. Copyright © 2005 by the Association for Computing Machinery, Inc.

关键词： computer software

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PapierCraft: A command system for interactive paper

PapierCraft: A command system for interactive paper

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UIST 2005: 18th Annual ACM Symposium on User Interface Software and Technology

作者： Liao, Chunyuan Guimbretière, François Hinckley, Ken Human-Computer Interaction Lab. Department of Computer Science University of Maryland College Park MD 20742 United States Microsoft Research One Microsoft Way Redmond WA 98052-6399 United States

ISBN: (纸本)159593023X

Knowledge workers use paper extensively for document reviewing and note-taking due to its versatility and simplicity of use. As users annotate printed documents and gather notes, they create a rich web of annotations and cross references. Unfortunately, as paper is a static media, this web often gets trapped in the physical world. While several digital solutions such as XLibris [15] and Digital Desk [18] have been proposed, they suffer from a small display size or onerous hardware requirements. To address, these limitations, we propose PapierCraft, a gesture-based interface that allows users to manipulate digital documents directly using their printouts as proxies. Using a digital pen, users can annotate a printout or draw command gestures to indicate operations such as copying a document area, pasting an area previously copied, or creating a link. Upon pen synchronization, our infrastructure executes these commands and presents the result in a customized viewer. In this paper we describe the design and implementation of the PapierCraft command system, and report on early user feedback. Copyright 2005 ACM.

关键词： Interactive computer systems

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AppLens and launchTile: Two designs for one-handed thumb use on small devices

AppLens and launchTile: Two designs for one-handed thumb use...

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CHI 2005: Technology, Safety, Community - Conference on human Factors in Computing Systems

作者： Karlson, Amy K. Bederson, Benjamin B. SanGiovanni, John Human-Computer Interaction Lab. Computer Science Department Univ. of Maryland College Park MD 20742 United States Microsoft Research One Microsoft Way Redmond WA 98052 United States

ISBN: (纸本)1581139985

We present two interfaces to support one-handed thumb use for PDAs and cell phones. Both use Scalable User Interface (ScUI) techniques to support multiple devices with different resolutions and aspect ratios. The designs use variations of zooming interface techniques to provide multiple views of application data: AppLens uses tabular fisheye to access nine applications, while LaunchTile uses pure zoom to access thirty-six applications. We introduce two sets of thumb gestures, each representing different philosophies for one-handed interaction. We conducted two studies to evaluate our designs. In the first study, we explored whether users could learn and execute the AppLens gesture set with minimal training. Participants performed more accurately and efficiently using gestures for directional navigation than using gestures for object interaction. In the second study, we gathered user reactions to each interface, as well as comparative preferences. With minimal exposure to each design, most users favored AppLens's tabular fisheye interface. Copyright 2005 ACM.

关键词： User interfaces

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Towards real-time body pose estimation for presenters in meeting environments

Towards real-time body pose estimation for presenters in mee...

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13th International Conference in Central Europe on computer Graphics, Visualization and computer Vision 2005, WSCG'2005 - In Co-operation with EUROGRAPHICS

作者： Poppe, Ronald Heylen, Dirk Nijholt, Anton Poel, Mannes University of Twente Department of Computer Science Human Media Interaction Group P.O. Box 217 7500 AE Enschede Netherlands

ISBN: (纸本)8090310079

This paper describes a computer vision-based approach to body pose estimation. The algorithm can be executed in real-time and processes low resolution, monocular image sequences. A silhouette is extracted and matched against a projection of a 16 DOF human body model. In addition, skin color is used to locate hands and head. No detailed human body model is needed. We evaluate the approach both quantitatively using synthetic image sequences and qualitatively on video test data of short presentations. The algorithm is developed with the aim of using it in the context of a meeting room where the poses of a presenter have to be estimated. The results can be applied in the domain of virtual environments. Copyright UNION Agency - science Press.

关键词： Virtual reality

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Adapting support vector machines to predict translation initiation sites in the human genome

Adapting support vector machines to predict translation init...

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2005 IEEE Computational Systems Bioinformatics Conference, Workshops and Poster Abstracts

作者： Akbani, Rehan Kwek, Stephen Human Genome Lab. Department of Computer Science University of Texas San Antonio

ISBN: (纸本)0769524427

This study is concerned with predicting Translation Initiation Sites (TIS) in the human genome that start with the nucleotide sequence ATG. This sequence occurs 104 million times in the entire genome. However, current estimates predict that there are only about 30,000 or so TIS in the human genome, giving an imbalance ratio of about 1:3500 for TIS ATG vs. non-TIS ATG sites. Algorithms that are designed using datasets that have low imbalance ratio may not be well suited to predict TIS at the genomic level. In this paper, we modified the SVM algorithm that can handle moderately high imbalance ratio. The F-measures for other approaches were: Linear Discriminant 0%, SVM with under-sampling 4.1%, SVM with over-sampling 8.2%, Neural Network 13.3%, Decision Tree 20%, our approach 44%. This shows how poorly standard approaches perform at the genomic level due to the high imbalance ratio. Our approach improves the performance significantly. © 2005 IEEE.

关键词： Genes

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Bringing usability concerns to the design of software architecture

Bringing usability concerns to the design of software archit...

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Joint Working Conferences EHCI-DSVIS 2004

作者： John, Bonnie E. Bass, Len Sanchez-Segura, Maria-Isabel Adams, Rob J. Carnegie Mellon University Human-Computer Interaction Institute United States Carnegie Mellon University Software Engineering Institute United States Carlos III University of Madrid Computer Science Department Spain

Software architects have techniques to deal with many quality attributes such as performance, reliability, and maintainability. Usability, however, has traditionally been concerned primarily with presentation and not been a concern of software architects beyond separating the user interface from the remainder of the application. In this paper, we introduce usability-supporting architectural patterns. Each pattern describes a usability concern that is not supported by separation alone. For each concern, a usability-supporting architectural pattern provides the forces from the characteristics of the task and environment, the human, and the state of the software to motivate an implementation independent solution cast in terms of the responsibilities that must be fulfilled to satisfy the forces. Furthermore, each pattern includes a sample solution implemented in the context of an overriding separation based pattern such as J2EE Model View Controller. © IFIP International Federation for Information Processing 2005.

关键词： Software engineering

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The influence of the avatar on online perceptions of anthropomorphism, androgyny, credibility, homophily, and attraction

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Journal of computer-Mediated Communication 2005年第1期11卷 153-178页

作者： Nowak, Kristine L. Rauh, Christian Department of Communication Science University of Connecticut United States Department of Communication Science United States Human Computer Interaction Lab. University of Connecticut United States Department of Communication Sciences University of Connecticut 850 Bolton Road U-1085 Storrs CT 06269 United States Department of Communication Sciences University of Connecticut Storrs United States

It has become increasingly common for websites and computer media to provide computer generated visual images, called avatars, to represent users and bots during online interactions. In this study, participants (N=255) evaluated a series of avatars in a static context in terms of their androgyny, anthropomorphism, credibility, homophily, attraction, and the likelihood they would choose them during an interaction. The responses to the images were consistent with what would be predicted by uncertainty reduction theory. The results show that the masculinity or femininity (lack of androgyny) of an avatar, as well as anthropomorphism, significantly influence perceptions of avatars. Further, more anthropomorphic avatars were perceived to be more attractive and credible, and people were more likely to choose to be represented by them. Participants reported masculine avatars as less attractive than feminine avatars, and most people reported a preference for human avatars that matched their gender. Practical and theoretical implications of these results for users, designers, and researchers of avatars are discussed. © 2005 Journal of computer-Mediated Communication.

关键词： .INFLUENCE likelihood uncertainty choose computer-Mediated Avatars static credible masculinity feminine Anthropomorphic attractive femininity Perceptions of Anthropomorphism

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Formal verification of robot movements - A case study on home service robot SHR100

Formal verification of robot movements - A case study on hom...

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2005 IEEE International Conference on Robotics and Automation

作者： Kim, Moonzoo Kang, Kyo Chul Lee, Hyoungki Computer Science and Engineering Department Pohang University of Science and Technology Pohang Korea Republic of Interaction Lab. Samsung Advanced Institute of Technology Suwon Korea Republic of

ISBN: (纸本)078038914X

Home service robots have received much attention from both academia and industry because home service robots have wide range of potential applications such as home security, cleaning, etc. The robots need to add or update services frequently according to the changing needs of human users. Furthermore, reactive nature of the robots add complexity to develop robot applications. These challenges raise safety issues seriously. Considering that safe operation of home service robots is crucial, current practice of validating robot applications is, however, not mature enough for wide deployment of home service robots. In this paper, we present our experience of developing and formally verifying discrete control software of Samsung Home Robot (SHR) using Esterel. We give a brief background on Esterel, then illuminate our result in formally verifying stopping behavior of SHR. Through the verification, we could detect and solve a feature interaction problem which caused the robot not to stop when a user commanded the robot to stop. © 2005 IEEE.

关键词： Motion planning

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Sequence algorithms for boundary value analysis with constrained input parameters1

Sequence algorithms for boundary value analysis with constra...

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14th International Conference on Intelligent and Adaptive Systems and Software Engineering, IASSE 2005

作者： Feng, Wenying Zhang, Zhenhua Computer Science/Studies and Department of Mathematics Trent University Peterborough ON K9J 7B8 Canada Human Computer Interaction Institute Carnegie Mellon University Pittsburgh PA 15213 United States

ISBN: (纸本)9781604234558

In this paper, the boundary value analysis method for testing case design is generalized for input parameters with constraints. We introduce the definition of priority levels to classify testing cases into three categories. With three input parameters X, Y and Z, we make the general assumptions of Y is a function of X (Y = f(X)) and Z is a function of X and Y (Z = g(X, Y)). The sequence algorithms for test case design are presented and an autogenerator based on the new algorithm is also developed. As a test to the auto-generator, output from the sample runs to NetProvision Activator (NPA), a real world product, is presented and analyzed.

关键词： Black-box testing

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MOCHA: Modular and Configurable Handset Software Architecture

MOCHA: Modular and Configurable Handset Software Architectur...

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2005 2nd IEEE Consumer Communications and Networking Conference, CCNC2005

作者： Kim, Kibum Kwak, Jason Dongwon Jo, Seung Hwan Center for Human-Computer Interaction Department of Computer Science Virginia Tech. Blacksburg VA 24061 United States UMTS R and D Mobile Communication Division Samsung Electronics Co. Ltd. 442-600 Korea Republic of

ISBN: (纸本)0780387848

This paper describes Mocha, an open mobile S/W platform and application developed by Samsung Electronics. Mocha's key features are its efficiency (it fits in regular phones), its portability (it covers different stack/OS/chipsets for CDMA, EV-DO, GSM/GPRS, and UMTS), its modularity and configurability (it meets customers' varying needs), its extensibility (it can be adapted to include new features and interfaces), its interoperability based on de-facto standards such as OMA, 3GPP, 3GPP2, CDG;and its security (it can withstand the attack of malicious applications). Among these key features, in this paper, we outline the multimedia messaging service (MMS) that inspired this system and then describe its design, architecture, and prototype implementation. © 2004 IEEE.

关键词： Wearable computers

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