Publication statistics

Pub. period:2003-2012
Pub. count:25
Number of co-authors:51


Number of publications with 3 favourite co-authors:

George G. Robertson:6
Benjamin B. Bederson:5
Mary Czerwinski:4



Productive colleagues

Bongshin Lee's 3 most productive colleagues in number of publications:

Mary Czerwinski:80
Catherine Plaisant:78
Kori Inkpen:70

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Bongshin Lee

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Publications by Bongshin Lee (bibliography)

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Riche, Nathalie Henry, Dwyer, Tim, Lee, Bongshin and Carpendale, Sheelagh (2012): Exploring the design space of interactive link curvature in network diagrams. In: Proceedings of the 2012 International Conference on Advanced Visual Interfaces 2012. pp. 506-513.

When exploiting the power of node-link diagrams to represent real-world data such as web structures, airline routes, electrical, telecommunication and social networks, link congestion frequently arises. Such areas in the diagram -- with dense, overlapping links -- are not readable connectivity, node shapes, labels, and contextual information are obscured. In response, graph-layout research has begun to consider the modification of link shapes with techniques such as link routing and bundling. In this paper, we delve into the interactive techniques afforded by variant use of link curvature, delineating a six-dimensional design space that is populated by four families of interactive techniques: bundling, fanning, magnets, and legends. Our taxonomy encompasses existing techniques and reveals several novel link interactions. We describe the implementation of these techniques and illustrate their potential for exploring dense graphs with multiple types of links.

© All rights reserved Riche et al. and/or ACM Press

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Amershi, Saleema, Lee, Bongshin, Kapoor, Ashish, Mahajan, Ratul and Christian, Blaine (2011): CueT: human-guided fast and accurate network alarm triage. In: Proceedings of ACM CHI 2011 Conference on Human Factors in Computing Systems 2011. pp. 157-166.

Network alarm triage refers to grouping and prioritizing a stream of low-level device health information to help operators find and fix problems. Today, this process tends to be largely manual because existing tools cannot easily evolve with the network. We present CueT, a system that uses interactive machine learning to learn from the triaging decisions of operators. It then uses that learning in novel visualizations to help them quickly and accurately triage alarms. Unlike prior interactive machine learning systems, CueT handles a highly dynamic environment where the groups of interest are not known a-priori and evolve constantly. A user study with real operators and data from a large network shows that CueT significantly improves the speed and accuracy of alarm triage compared to the network's current practice.

© All rights reserved Amershi et al. and/or their publisher

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Brush, A. J. Bernheim, Lee, Bongshin, Mahajan, Ratul, Agarwal, Sharad, Saroiu, Stefan and Dixon, Colin (2011): Home automation in the wild: challenges and opportunities. In: Proceedings of ACM CHI 2011 Conference on Human Factors in Computing Systems 2011. pp. 2115-2124.

Visions of smart homes have long caught the attention of researchers and considerable effort has been put toward enabling home automation. However, these technologies have not been widely adopted despite being available for over three decades. To gain insight into this state of affairs, we conducted semi-structured home visits to 14 households with home automation. The long term experience, both positive and negative, of the households we interviewed illustrates four barriers that need to be addressed before home automation becomes amenable to broader adoption. These barriers are high cost of ownership, inflexibility, poor manageability, and difficulty achieving security. Our findings also provide several directions for further research, which include eliminating the need for structural changes for installing home automation, providing users with simple security primitives that they can confidently configure, and enabling composition of home devices.

© All rights reserved Brush et al. and/or their publisher

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Karlson, Amy K., Smith, Greg and Lee, Bongshin (2011): Which version is this?: improving the desktop experience within a copy-aware computing ecosystem. In: Proceedings of ACM CHI 2011 Conference on Human Factors in Computing Systems 2011. pp. 2669-2678.

Computers today make it easy for people to scatter copies and versions of digital items across their file systems, but do little to help people manage the resulting mess. In this paper, we introduce the concept of a copy-aware computing ecosystem, inspired by a vision of computing when systems track and surface copy relationships between files. Based on two deployments of a copy-aware software prototype and in-depth interviews with individuals in collaborative relationships, we present our findings on the origins of copies and the barriers to eliminating them, but offer a promising solution based on the set of files that together represent a user's conceptual view of a document -- the versionset. We show that the versionset is viable to infer, and we draw upon user activity logs and feedback on personalized views of versionsets to distill guidelines for the factors that define a versionset. We conclude by enumerating the many PIM user experiences that could be transformed as a result.

© All rights reserved Karlson et al. and/or their publisher

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Browne, Jeffrey, Lee, Bongshin, Carpendale, Sheelagh, Riche, Nathalie and Sherwood, Timothy (2011): Data analysis on interactive whiteboards through sketch-based interaction. In: Proceedings of the 2011 ACM International Conference on Interactive Tabletops and Surfaces 2011. pp. 154-157.

When faced with the task of understanding complex data, it is common for people to work on whiteboards, where they can collaborate with others, brainstorm lists of important questions, and sketch simple visualizations. However, these sketched visualizations seldom contain real data. We address this gap by extending these sketched whiteboard visualizations with the actual data to be analyzed. Guided by an iterative design process, we developed a better understanding of the challenges involved in bringing sketch-based interaction to data analysis. In this work we contribute insights into the design challenges of sketch-based charting, and we present SketchVis, a system that leverages hand-drawn input for exploring data through simple charts.

© All rights reserved Browne et al. and/or ACM Press

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Riche, Nathalie Henry, Lee, Bongshin and Chevalier, Fanny (2010): iChase: supporting exploration and awareness of editing activities on Wikipedia. In: Proceedings of the 2010 International Conference on Advanced Visual Interfaces 2010. pp. 59-66.

To increase its credibility and preserve the trust of its readers. Wikipedia needs to ensure a good quality of its articles. To that end, it is critical for Wikipedia administrators to be aware of contributors' editing activity to monitor vandalism, encourage reliable contributors to work on specific articles, or find mentors for new contributors. In this paper, we present iChase, a novel interactive visualization tool to provide administrators with better awareness of editing activities on Wikipedia. Unlike the currently used visualizations that provide only page-centric information. iChase visualizes the trend of activities for two entity types; articles and contributors. iChase is based on two heatmaps (one for each entity type) synchronized to one timeline. It allows users to interactively explore the history of changes by drilling down into specific articles and contributors, or time points to access the details of the changes. We also present a case study to illustrate how iChase can be used to monitor editing activities of Wikipedia authors, as well as a usability study. We conclude by discussing the strengths and weaknesses of iChase.

© All rights reserved Riche et al. and/or their publisher

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Song, Hyunjoo, Kim, Bohyoung, Lee, Bongshin and Seo, Jinwook (2010): A comparative evaluation on tree visualization methods for hierarchical structures with large fan-outs. In: Proceedings of ACM CHI 2010 Conference on Human Factors in Computing Systems 2010. pp. 223-232.

Hierarchical structures with large fan-outs are hard to browse and understand. In the conventional node-link tree visualization, the screen quickly becomes overcrowded as users open nodes that have too many child nodes to fit in one screen. To address this problem, we propose two extensions to the conventional node-link tree visualization: a list view with a scrollbar and a multi-column interface. We compared them against the conventional tree visualization interface in a user study. Results show that users are able to browse and understand the tree structure faster with the multi-column interface than the other two interfaces. Overall, they also liked the multi-column better than others.

© All rights reserved Song et al. and/or their publisher

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Venolia, Gina, Tang, John, Cervantes, Ruy, Bly, Sara, Robertson, George, Lee, Bongshin and Inkpen, Kori (2010): Embodied social proxy: mediating interpersonal connection in hub-and-satellite teams. In: Proceedings of ACM CHI 2010 Conference on Human Factors in Computing Systems 2010. pp. 1049-1058.

Current business conditions have given rise to distributed teams that are mostly collocated except for one remote member. These "hub-and-satellite" teams face the challenge of the satellite colleague being out-of-sight and out-of-mind. We developed a telepresence device, called an Embodied Social Proxy (ESP), which represents the satellite coworker 24x7. Beyond using ESPs in our own group, we deployed an ESP in four product teams within our company for six weeks. We studied how ESP was used through ethnographic observations, surveys, and usage log data. ESP not only increased the satellite worker's ability to fully participate in meetings, it also increased the hub's attention and affinity towards the satellite. The continuous physical presence of ESP in each team improved the interpersonal social connections between hub and satellite colleagues.

© All rights reserved Venolia et al. and/or their publisher

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Kapoor, Ashish, Lee, Bongshin, Tan, Desney and Horvitz, Eric (2010): Interactive optimization for steering machine classification. In: Proceedings of ACM CHI 2010 Conference on Human Factors in Computing Systems 2010. pp. 1343-1352.

Interest has been growing within HCI on the use of machine learning and reasoning in applications to classify such hidden states as user intentions, based on observations. HCI researchers with these interests typically have little expertise in machine learning and often employ toolkits as relatively fixed "black boxes" for generating statistical classifiers. However, attempts to tailor the performance of classifiers to specific application requirements may require a more sophisticated understanding and custom-tailoring of methods. We present ManiMatrix, a system that provides controls and visualizations that enable system builders to refine the behavior of classification systems in an intuitive manner. With ManiMatrix, users directly refine parameters of a confusion matrix via an interactive cycle of re-classification and visualization. We present the core methods and evaluate the effectiveness of the approach in a user study. Results show that users are able to quickly and effectively modify decision boundaries of classifiers to tailor the behavior of classifiers to problems at hand.

© All rights reserved Kapoor et al. and/or their publisher

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Robertson, George G., Chilimbi, Trishul and Lee, Bongshin (2010): AllocRay: memory allocation visualization for unmanaged languages. In: Proceedings of the ACM Symposium on Software Visualization 2010. pp. 43-52.

A program's memory system performance is one of the key determinants of its overall performance. Lack of understanding of a program's memory system behavior can lead to performance problems, the most common being memory fragmentation and memory leaks. In this paper, we present AllocRay, a visualization that animates memory allocation event trace information over a time period of execution of a program. Various modes of display with custom color mappings and zooming allow the programmer to see how heaps are used over time (by allocation type, age, size, or thread id). Custom displays also allow the programmer to quickly detect potential memory leaks and fragmentation problems. Composable filters enable the programmer to focus on specific issues. We describe the techniques used to enable processing of a huge number of trace events while enabling rapid response to visualization view changes. We also describe informal interviews with four expert programmers to examine the usability of the AllocRay design.

© All rights reserved Robertson et al. and/or ACM Press

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Talbot, Justin, Lee, Bongshin, Kapoor, Ashish and Tan, Desney S. (2009): EnsembleMatrix: interactive visualization to support machine learning with multiple classifiers. In: Proceedings of ACM CHI 2009 Conference on Human Factors in Computing Systems 2009. pp. 1283-1292.

Machine learning is an increasingly used computational tool within human-computer interaction research. While most researchers currently utilize an iterative approach to refining classifier models and performance, we propose that ensemble classification techniques may be a viable and even preferable alternative. In ensemble learning, algorithms combine multiple classifiers to build one that is superior to its components. In this paper, we present EnsembleMatrix, an interactive visualization system that presents a graphical view of confusion matrices to help users understand relative merits of various classifiers. EnsembleMatrix allows users to directly interact with the visualizations in order to explore and build combination models. We evaluate the efficacy of the system and the approach in a user study. Results show that users are able to quickly combine multiple classifiers operating on multiple feature sets to produce an ensemble classifier with accuracy that approaches best-reported performance classifying images in the CalTech-101 dataset.

© All rights reserved Talbot et al. and/or ACM Press

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Lee, Bongshin, Smith, Greg, Robertson, George G., Czerwinski, Mary and Tan, Desney S. (2009): FacetLens: exposing trends and relationships to support sensemaking within faceted datasets. In: Proceedings of ACM CHI 2009 Conference on Human Factors in Computing Systems 2009. pp. 1293-1302.

Previous research has shown that faceted browsing is effective and enjoyable in searching and browsing large collections of data. In this work, we explore the efficacy of interactive visualization systems in supporting exploration and sensemaking within faceted datasets. To do this, we developed an interactive visualization system called FacetLens, which exposes trends and relationships within faceted datasets. FacetLens implements linear facets to enable users not only to identify trends but also to easily compare several trends simultaneously. Furthermore, it offers pivot operations to allow users to navigate the faceted dataset using relationships between items. We evaluate the utility of the system through a description of insights gained while experts used the system to explore the CHI publication repository as well as a database of funding grant data, and report a formative user study that identified usability issues.

© All rights reserved Lee et al. and/or ACM Press

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Paek, Tim, Lee, Bongshin and Thiesson, Bo (2009): Designing phrase builder: a mobile real-time query expansion interface. In: Proceedings of 11th Conference on Human-computer interaction with mobile devices and services 2009. p. 7.

As users enter web queries, real-time query expansion (RTQE) interfaces offer suggestions based on an index garnered from query logs. In selecting a suggestion, users can potentially reduce keystrokes, which can be very beneficial on mobile devices with deficient input means. Unfortunately, RTQE interfaces typically provide little assistance when only parts of an intended query appear among the suggestion choices. In this paper, we introduce Phrase Builder, an RTQE interface that reduces keystrokes by facilitating the selection of individual query words and by leveraging back-off query techniques to offer completions for out-of-index queries. We describe how we implemented a small memory footprint index and retrieval algorithm, and discuss lessons learned from three versions of the user interface, which was iteratively designed through user studies. Compared to standard auto-completion and typing, the last version of Phrase Builder reduced more keystrokes-per-character, was perceived to be faster, and was overall preferred by users.

© All rights reserved Paek et al. and/or their publisher

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Robbins, Daniel C., Lee, Bongshin and Fernandez, Roland (2008): TapGlance: designing a unified smartphone interface. In: Proceedings of DIS08 Designing Interactive Systems 2008. pp. 386-394.

The difference between using one mobile phone and another can feel like learning a new language based on our extensive experience designing mobile applications for spatial data navigation, faceted search, and glanceable information, we have developed design principles for unifying the various aspects of the internet connected mobile phone ("smartphone") user experience. This paper presents TapGlance, a design proposal for a novel mobile phone user interface. TapGlance adapts its presentation to different levels of user attention, provides ubiquitous faceted search, and uses a zooming metaphor to unite inter- and intra-application navigation. Because our interface relies on a spatial metaphor it can also be adapted to non-textual representations and thus useful to broader populations. This paper describes our design goals, design process, and the resulting TapGlance design.

© All rights reserved Robbins et al. and/or ACM Press

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Skeels, Meredith, Lee, Bongshin, Smith, Greg and Robertson, George G. (2008): Revealing uncertainty for information visualization. In: Levialdi, Stefano (ed.) AVI 2008 - Proceedings of the working conference on Advanced Visual Interfaces May 28-30, 2008, Napoli, Italy. pp. 376-379.

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Paek, Tim, Thiesson, Bo, Ju, Yun-Cheng and Lee, Bongshin (2008): Search Vox: leveraging multimodal refinement and partial knowledge for mobile voice search. In: Cousins, Steve B. and Beaudouin-Lafon, Michel (eds.) Proceedings of the 21st Annual ACM Symposium on User Interface Software and Technology October 19-22, 2008, Monterey, CA, USA. pp. 141-150.

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Kim, Bohyoung, Lee, Bongshin and Seo, Jinwook (2007): Visualizing set concordance with permutation matrices and fan diagrams. In Interacting with Computers, 19 (5) pp. 630-643.

Scientific problem solving often involves concordance (or discordance) analysis among the result sets from different approaches. For example, different scientific analysis methods with the same samples often lead to different or even conflicting conclusions. To reach a more judicious conclusion, it is crucial to consider different perspectives by checking concordance among those result sets by different methods. In this paper, we present an interactive visualization tool called ConSet, where users can effectively examine relationships among multiple sets at once. ConSet provides an overview using an improved permutation matrix to enable users to easily identify relationships among sets with a large number of elements. Not only do we use a standard Venn diagram, we also introduce a new diagram called Fan diagram that allows users to compare two or three sets without any inconsistencies that may exist in Venn diagrams. A qualitative user study was conducted to evaluate how our tool works in comparison with a traditional set visualization tool based on a Venn diagram. We observed that ConSet enabled users to complete more tasks with fewer errors than the traditional interface did and most users preferred ConSet.

© All rights reserved Kim et al. and/or Elsevier Science

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Lee, Bongshin, Robertson, George G., Czerwinski, Mary and Parr, Cynthia Sims (2007): CandidTree: Visualizing Structural Uncertainty in Similar Hierarchies. In: Baranauskas, Maria Ceclia Calani, Palanque, Philippe A., Abascal, Julio and Barbosa, Simone Diniz Junqueira (eds.) DEGAS 2007 - Proceedings of the 1st International Workshop on Design and Evaluation of e-Government Applications and Services September 11th, 2007, Rio de Janeiro, Brazil. pp. 250-263.

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Kang, Hyunmo, Plaisant, Catherine, Lee, Bongshin and Bederson, Benjamin B. (2006): Exploring content-actor paired network data using iterative query refinement with NetLens. In: JCDL06: Proceedings of the 6th ACM/IEEE-CS Joint Conference on Digital Libraries 2006. p. 372.

Networks have remained a challenge for information retrieval and visualization because of the rich set of tasks that users want to accomplish. This paper demonstrates a tool, NetLens, to explore a Content-Actor paired network data model. The NetLens interface was designed to allow users to pose a series of elementary queries and iteratively refine visual overviews and sorted lists. This enables the support of complex queries that are traditionally hard to specify in node-link visualizations. NetLens is general and scalable in that it applies to any dataset that can be represented with our abstract Content-Actor data model.

© All rights reserved Kang et al. and/or ACM Press

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Lee, Bongshin, Plaisant, Catherine, Parr, Cynthia Sims, Fekete, Jean-Daniel and Henry, Nathalie (2006): Task taxonomy for graph visualization. In: Bertini, Enrico, Plaisant, Catherine and Santucci, Giuseppe (eds.) BELIV 2006 - Proceedings of the 2006 AVI Workshop on BEyond time and errors novel evaluation methods for information visualization May 23, 2006, Venice, Italy. pp. 1-5.

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Lee, Bongshin, Czerwinski, Mary, Robertson, George G. and Bederson, Benjamin B. (2005): Understanding research trends in conferences using paperLens. In: Proceedings of ACM CHI 2005 Conference on Human Factors in Computing Systems 2005. pp. 1969-1972.

PaperLens is a novel visualization that reveals trends, connections, and activity throughout a conference community. It tightly couples views across papers, authors, and references. PaperLens was developed to visualize 8 years (1995-2002) of InfoVis conference proceedings and was then extended to visualize 23 years (1982-2004) of the CHI conference proceedings. This paper describes how we analyzed the data and designed PaperLens. We also describe a user study to focus our redesign efforts along with the design changes we made to address usability issues. We summarize lessons learned in the process of design and scaling up to the larger set of CHI conference papers.

© All rights reserved Lee et al. and/or ACM Press

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Baudisch, Patrick, Lee, Bongshin and Hanna, Libby (2004): Fishnet, a fisheye web browser with search term popouts: a comparative evaluation with overview and linear view. In: Costabile, Maria Francesca (ed.) AVI 2004 - Proceedings of the working conference on Advanced visual interfaces May 25-28, 2004, Gallipoli, Italy. pp. 133-140.

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Lee, Bongshin, Parr, Cynthia Sims, Campbell, Dana and Bederson, Benjamin B. (2004): How users interact with biodiversity information using TaxonTree. In: Costabile, Maria Francesca (ed.) AVI 2004 - Proceedings of the working conference on Advanced visual interfaces May 25-28, 2004, Gallipoli, Italy. pp. 320-327.

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Lee, Bongshin, Czerwinski, Mary, Robertson, George G. and Bederson, Benjamin B. (2004): Understanding Eight Years of InfoVis Conferences Using PaperLens. In: InfoVis 2004 - 10th IEEE Symposium on Information Visualization 10-12 October, 2004, Austin, TX, USA. .

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Bederson, Benjamin B., Lee, Bongshin, Sherman, Robert M., Herrnson, Paul S. and Niemi, Richard G. (2003): Electronic voting system usability issues. In: Cockton, Gilbert and Korhonen, Panu (eds.) Proceedings of the ACM CHI 2003 Human Factors in Computing Systems Conference April 5-10, 2003, Ft. Lauderdale, Florida, USA. pp. 145-152.

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