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DateLens: A Fisheye Calendar Interface for PDAs
- ACM Transactions on Computer-Human Interaction
, 2004
"... Calendar applications for small handheld devices are growing in popularity. This led us to develop DateLens, a novel calendar interface for PDAs designed to support complex tasks. It uses a fisheye representation coupled with compact overviews to give the big picture in a small space. The interface ..."
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Cited by 91 (13 self)
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Calendar applications for small handheld devices are growing in popularity. This led us to develop DateLens, a novel calendar interface for PDAs designed to support complex tasks. It uses a fisheye representation coupled with compact overviews to give the big picture in a small space. The interface also gives users control over the visible time period, as well as supporting integrated search to discover patterns and outliers. Designed with device scalability in mind, DateLens currently runs on desktop computers as well as PDAs. Two user studies have been conducted to examine the viability of DateLens as a replacement for traditional calendar visualizations. In the first study, non-PDA users performed complex tasks significantly faster with DateLens than with the Microsoft Pocket PC 2002 ™ calendar (using a PDA emulator). In addition, they rated DateLens as being easier to use than the default calendar application for a majority of the tasks. In the second study, the participants were expert Pocket PC users and the software was run on their own devices. Again, DateLens performed significantly faster for the complex tasks, and there were satisfaction differences favoring each calendar for different kinds of tasks. From these studies, it is clear that DateLens is superior for more complex tasks such as those associated with longer time periods. For daily event tracking, users familiar with the default Pocket PC calendar strongly preferred its daily view and behaviors. Categories and Subject Descriptors:
Summary thumbnails: readable overviews for small screen web browsers
- In CHI ’05: Proceedings of the SIGCHI conference on Human factors in computing systems
, 2005
"... In order to display web pages designed for desktop-sized monitors, some small-screen web browsers provide singlecolumn or thumbnail views. Both have limitations. Singlecolumn views affect page layouts and require users to scroll significantly more. Thumbnail views tend to reduce contained text beyon ..."
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Cited by 82 (1 self)
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In order to display web pages designed for desktop-sized monitors, some small-screen web browsers provide singlecolumn or thumbnail views. Both have limitations. Singlecolumn views affect page layouts and require users to scroll significantly more. Thumbnail views tend to reduce contained text beyond readability, so differentiating visually similar areas requires users to zoom. In this paper, we present Summary Thumbnails—thumbnail views enhanced with readable text fragments. Summary Thumbnails help users identify viewed material and distinguish between visually similar areas. In our user study, participants located content in web pages about 41 % faster and with 71% lower error rates when using the Summary Thumbnail interface than when using the Single-Column interface, and zoomed 59 % less than when using the Thumbnail interface. Nine of the eleven participants preferred Summary Thumbnails over both the Thumbnail and Single-Column interfaces. ACM Classifiction: H5.2 [Information interfaces and
A Diary Study of Mobile Information Needs
"... Being mobile influences not only the types of information people seek but also the ways they attempt to access it. Mobile contexts present challenges of changing location and social context, restricted time for information access, and the need to share attentional resources among concurrent activiti ..."
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Cited by 79 (3 self)
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Being mobile influences not only the types of information people seek but also the ways they attempt to access it. Mobile contexts present challenges of changing location and social context, restricted time for information access, and the need to share attentional resources among concurrent activities. Understanding mobile information needs and associated interaction challenges is fundamental to improving designs for mobile phones and related devices. We conducted a two-week diary study to better understand mobile information needs and how they are addressed. Our study revealed that depending on the time and resources available, as well as the situational context, people use diverse and, at times, ingenious ways to obtain needed information. We summarize key findings and discuss design implications for mobile technology. Author Keywords Diary study, user requirements, mobile devices
Collapse-to-Zoom: Viewing Web Pages on Small Screen Devices by Interactively Removing Irrelevant Content
, 2004
"... Overview visualizations for small-screen web browsers were designed to provide users with visual context and to allow them to rapidly zoom in on tiles of relevant content. Given that content in the overview is reduced, however, users are often unable to tell which tiles hold the relevant material, w ..."
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Cited by 53 (1 self)
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Overview visualizations for small-screen web browsers were designed to provide users with visual context and to allow them to rapidly zoom in on tiles of relevant content. Given that content in the overview is reduced, however, users are often unable to tell which tiles hold the relevant material, which can force them to adopt a time-consuming hunt-and-peck strategy. Collapse-to-zoom addresses this issue by offering an alternative exploration strategy. In addition to allowing users to zoom into relevant areas, collapse -to-zoom allows users to collapse areas deemed irrelevant, such as columns containing menus, archive material, or advertising. Collapsing content causes all remaining content to expand in size causing it to reveal more detail, which increases the user's chance of identifying relevant content. Collapse-to-zoom navigation is based on a hybrid between a marquee selection tool and a marking menu, called marquee menu. It offers four commands for collapsing content areas at different granularities and to switch to a full-size reading view of what is left of the page.
ZoneZoom: map navigation for smartphones with recursive view segmentation
- In AVI ’04: Proceedings of the working conference on Advanced Visual Interfaces
, 2004
"... ZoneZoom is an input technique that lets users traverse large information spaces on smartphones. Our technique ZoneZoom, segments a given view of an information space into nine sub-segments, each of which is mapped to a key on the number keypad of the smartphone. This segmentation can be hand-crafte ..."
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Cited by 46 (5 self)
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ZoneZoom is an input technique that lets users traverse large information spaces on smartphones. Our technique ZoneZoom, segments a given view of an information space into nine sub-segments, each of which is mapped to a key on the number keypad of the smartphone. This segmentation can be hand-crafted by the information space author or dynamically created at run-time. ZoneZoom supports “spring-loaded ” view shifting which allows users to easily “glance ” at nearby areas and then quickly return to their current view. Our ZoneZoom technique lets users gain an overview and compare information from different parts of a dataset. SmartPhlow is an optimized application for browsing a map of local-area road traffic conditions.
Visualizing locations of off-screen objects on mobile devices: a comparative evaluation of three approaches
- In Proc. of MobileHCI
, 2006
"... Browsing large information spaces such as maps on the limited screen of mobile devices often requires people to perform panning and zooming operations that move relevant display content off-screen. This makes it difficult to perform spatial tasks such as finding the location of Points Of Interest (P ..."
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Cited by 31 (6 self)
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Browsing large information spaces such as maps on the limited screen of mobile devices often requires people to perform panning and zooming operations that move relevant display content off-screen. This makes it difficult to perform spatial tasks such as finding the location of Points Of Interest (POIs) in a city. Visualizing the location of off-screen objects can mitigate this problem: in this paper, we present a user study comparing the Halo [2] approach with two other techniques based on arrows. Halo surrounds off-screen objects with circles that reach the display window, so that users can derive the location and distance of objects by observing the visible portion of the corresponding circles. In the two arrow-based techniques, arrows point at objects and their size and body length, respectively, inform about the distance of objects. Our study involved four tasks requiring users to identify and compare off-screen objects locations, and also investigated the effectiveness of the three techniques with respect to the number of off-screen objects. Arrows allowed users to order off-screen objects faster and more accurately according to their distance, while Halo allowed users to better identify the correct location of off-screen objects. Implications of these results for mobile map-based applications are also discussed.
Improving selection of off-screen targets with hopping
- In: Proc. CHI’06
, 2006
"... Many systems provide the user with a limited viewport of a larger graphical workspace. In these systems, the user often needs to find and select targets that are in the workspace, but not visible in the current view. Standard methods for navigating to the off-screen targets include scrolling, pannin ..."
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Cited by 30 (9 self)
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Many systems provide the user with a limited viewport of a larger graphical workspace. In these systems, the user often needs to find and select targets that are in the workspace, but not visible in the current view. Standard methods for navigating to the off-screen targets include scrolling, panning, and zooming; however, these are laborious when users cannot see a target’s direction or distance. Techniques such as halos can provide awareness of targets, but actually getting to the target is still slow with standard navigation. To improve off-screen target selection, we developed a new technique called hop, which combines halos with a teleportation mechanism that shows proxies of distant objects. Hop provides both awareness of off-screen targets and fast navigation to the target context. A study showed that users are significantly faster at selecting off-screen targets with hopping than with two-level zooming or graband-drag panning, and it is clear that hop will be faster than either halos or proxy-based techniques (like drag-and-pop or vacuum filtering) by themselves. Hop both improves on halo-based navigation and extends the value of proxies to small-screen environments. Author Keywords Navigation, graphical workspaces, off-screen targets, halo,
Searching for optimal methods of presenting dynamic text on different types of screens. In
- Kuutti (Eds.), Tradition and Transcendence. Proceedings of The Second Nordic Conference on Human-Computer Interaction, October 1923, 2002, Arhus, Denmark (Pp. 217
, 2002
"... Automatic dynamic presentation methods (e.g., vertical scrolling) are thought to be viable alternative means to present text on small-screen interfaces. Here we studied what is the most suitable method for different types of screens (for a laptop, a palm-type pocket computer, a communicator and a mo ..."
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Cited by 21 (2 self)
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Automatic dynamic presentation methods (e.g., vertical scrolling) are thought to be viable alternative means to present text on small-screen interfaces. Here we studied what is the most suitable method for different types of screens (for a laptop, a palm-type pocket computer, a communicator and a mobile phone). Reading rate and comprehension data suggest that there is an optimal screen type for each presentation method. The recommendations based on performance measures, however, differ from those based on usability and preference ratings.
PowerView: Using Information Links and Information Views to Navigate and
- Visualize Information on Small Displays. In Gellersen, H.-W., Thomas, P. (Eds.). HUC 2000 Proceedings
, 2000
"... Abstract. PowerView is a PDA application designed to support people with situational information, primarily during conversations and meetings with other people. PowerView was designed to address a number of issues in interface design concerning both information visualization and interaction on small ..."
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Cited by 20 (1 self)
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Abstract. PowerView is a PDA application designed to support people with situational information, primarily during conversations and meetings with other people. PowerView was designed to address a number of issues in interface design concerning both information visualization and interaction on small, mobile devices. In terms of information visualization, the system was required to provide the user with a single integrated information system that enabled quick access to related information once an object of interest had been selected. In terms of interaction, the system was required to enable easy and efficient information retrieval, including single-handed use of the device. These problems were addressed by introducing Information Links and Information Views. An evaluation of the application against the standard application suite bundle of the PDA, a Casio Cassiopeia E-11, proved the interfaces equivalent in usability even though the PowerView application uses a novel interface paradigm and the test subjects were given no training time with the system. 1
A Fisheye Calendar Interface for PDAs: Providing Overviews for Small Displays
- In The Craft of Information Visualization: Readings and Reflections
"... Calendar applications for small handheld devices such as PDAs are growing in popularity. This led us to develop FishCal, a novel calendar interface for PDAs. It supports users in performing planning and analysis tasks by using a fisheye representation of dates coupled with compact overviews, user co ..."
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Cited by 18 (2 self)
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Calendar applications for small handheld devices such as PDAs are growing in popularity. This led us to develop FishCal, a novel calendar interface for PDAs. It supports users in performing planning and analysis tasks by using a fisheye representation of dates coupled with compact overviews, user control over the visible time period, and integrated search. This enables users to see overviews and to easily navigate the calendar structure, and to discover patterns and outliers.
