Publication statistics
Pub. period:2003-2012
Pub. count:20
Number of co-authors:49
Co-authors
Number of publications with 3 favourite co-authors:
Ian E. Smith:6Vidya Setlur:5Jeffrey Hightower:5 Productive colleagues
Timothy Sohn's 3 most productive colleagues in number of publications:
Gregory D. Abowd:115Anind K. Dey:71James D. Hollan:49
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Timothy Sohn
Publications by Timothy Sohn (bibliography)
Sohn, Timothy, Lee, Lorikeet, Zhang, Stephanie, Dearman, David and Truong, Khai (2012): An examination of how households share and coordinate the completion of errands. In: Proceedings of ACM CSCW12 Conference on Computer-Supported Cooperative Work 2012. pp. 729-738.
“People often complete tasks and to-dos not only for themselves but also for others in their household. In this work, we examine how household members share and accomplish errands both individually and together. We conducted a three-week diary study with eight households to understand the types of errands that family members and roommates share with each other. We explore their motivations for offering and requesting help to complete their errands and the variety of methods for doing so. Our findings reveal when participants sometimes face challenges completing their errands, and how household members request and receive help. We learned that the cooperative performance of errands is typically dependent on household members' location, availability, and capability. Using these findings, we discuss design opportunities for cooperative errands sharing systems that can assist households.”
© All rights reserved Sohn et al. and/or ACM Press
Dearman, David, Sohn, Timothy and Truong, Khai N. (2011): Opportunities exist: continuous discovery of places to perform activities. In: Proceedings of ACM CHI 2011 Conference on Human Factors in Computing Systems 2011. pp. 2429-2438.
“A rich cognitive map of a space can enhance the individual's experience within the space. However, cognitive maps develop gradually through repeated experience; and because of this, on-demand mobile search services (e.g., Google Maps, Yelp) are often used to compensate for missing knowledge. In this work, we developed and evaluated a context-aware place discovery application called Opportunities Exist to assist in the acquisition of spatial knowledge and meaning. The application differs from traditional search in that places are discovered using an activity (e.g., drink coffee, sit in the sun) and the discovery process runs continuously, maintaining a history of places the user can perform her activities as she goes about her day. We conducted a 4-week deployment in two North American cities. The results show that users were able to discover new places to perform their activities in familiar spaces and learned to associate new activities with familiar places. In addition, participants leveraged the application to perform activities opportunistically, and used continuous place discovery as an opportunistic reminder of routines they wanted to break out of or resume.”
© All rights reserved Dearman et al. and/or their publisher
Sohn, Timothy, Li, Frank Chun Yat, Battestini, Agathe, Setlur, Vidya, Mori, Koichi and Horii, Hiroshi (2011): Myngle: unifying and filtering web content for unplanned access between multiple personal devices. In: Proceedings of the 2011 International Conference on Uniquitous Computing 2011. pp. 257-266.
“Users often engage in tasks that span multiple personal devices. Although many current solutions exist to provide ubiquitous access to one's data, users continue to struggle with cross-device tasks. These solutions often require them to plan ahead for their information needs. In this paper, we present Myngle, a device-agnostic system that lets users quickly find the information they are looking for from previously visited web pages without having to plan ahead. Myngle provides a unified web history from multiple personal devices, and allows users to filter their history based on high-level categories influenced by common mobile information need categories (e.g., address, phone number). We evaluated Myngle with 32 users and found that our category-based method of filtering eases the burden of continuing cross-device tasks.”
© All rights reserved Sohn et al. and/or ACM Press
Battestini, Agathe, Setlur, Vidya and Sohn, Timothy (2010): A large scale study of text-messaging use. In: Proceedings of 12th Conference on Human-computer interaction with mobile devices and services 2010. pp. 229-238.
“Text messaging has become a popular form of communication with mobile phones worldwide. We present findings from a large scale text messaging study of 70 university students in the United States. We collected almost 60,000 text messages over a period of 4 months using a custom logging tool on our participants' phones. Our results suggest that students communicate with a large number of contacts for extended periods of time, engage in simultaneous conversations with as many as 9 contacts, and often use text messaging as a method to switch between a variety of communication mediums. We also explore the content of text messages, and ways text message habits have changed over the last decade as it has become more popular. Finally, we offer design suggestions for future mobile communication tools.”
© All rights reserved Battestini et al. and/or their publisher
Sohn, Timothy, Setlur, Vidya, Mori, Koichi, Kaye, Joseph Jofish, Horii, Horishi, Battestini, Agathe, Ballagas, Rafael, Paretti, Christopher and Spasojevic, Mirjana (2010): Addressing mobile information overload in the universal inbox through lenses. In: Proceedings of 12th Conference on Human-computer interaction with mobile devices and services 2010. pp. 361-364.
“Increasingly, smartphones are being used to access all manner of information: email messages, Facebook status updates, tweets, RSS feeds, photographs and more. Approaches to dealing with this multi-faceted information stream developed on the desktop, such as switching between multiple applications or multiple browser windows, are unwieldy and scale poorly for mobile devices. In this paper, we propose the combination of the universal inbox and a system called 'Lenses' for extracting information of interest as part of a solution to this problem. These mechanisms allow the user to easily specify ways to sort, filter and manage their universal inbox in an intuitive way. We culminate with a discussion of implications for mobile phone interface design.”
© All rights reserved Sohn et al. and/or their publisher
Truong, Khai N., Kientz, Julie A., Sohn, Timothy, Rosenzweig, Alyssa, Fonville, Amanda and Smith, Tim (2010): The design and evaluation of a task-centered battery interface. In: Proceedings of the 2010 International Conference on Uniquitous Computing 2010. pp. 341-350.
“Battery interfaces provide important feedback about how much time users can continue using their mobile devices. Based on this information, they may develop mental models of the types of activities, tasks, and applications they can use before needing to recharge. Many of today's battery interfaces tend to report energy in coarse granularities or are highly inaccurate. As a result, users may find it difficult to depend on the estimates given. We conducted a survey with 104 participants to understand how users interact with various mobile battery interfaces. Based on the survey results, we designed and prototyped a task-centered battery interface on a mobile device that shows more accurate information about how long individual and combinations of tasks with several applications can be performed. Our pilot study of eight users demonstrated that fine-grained information separated by tasks can help users be more effective with and increase their understanding of their device's battery usage.”
© All rights reserved Truong et al. and/or their publisher
Sohn, Timothy, Mori, Koichi and Setlur, Vidya (2010): Enabling cross-device interaction with web history. In: Proceedings of ACM CHI 2010 Conference on Human Factors in Computing Systems 2010. pp. 3883-3888.
“Internet-enabled personal devices are growing in number. As people own and use more devices, sharing information between devices becomes increasingly important. Web browsing is one of the most common tasks, thus sharing web history is a first step in supporting cross-device interaction. Current methods of sharing web history involve manual, cumbersome methods. This paper explores a system to automatically synchronize web information among a user's personal devices, and optimize the interface to support mobile users. We describe a system that enables users to quickly find directions on their mobile phone based on past web searches, and seamlessly share favorite web pages between their personal devices.”
© All rights reserved Sohn et al. and/or their publisher
Sohn, Timothy, Ballagas, Rafael and Takayama, Leila (2009): At your service: using butlers as a model to overcome the mobile attention deficit. In: Proceedings of ACM CHI 2009 Conference on Human Factors in Computing Systems 2009. pp. 4219-4224.
“Advances in mobile phones and cellular network capabilities have enabled many opportunities for information access on the move. These capabilities provide instant access for the mobile user, but have exacerbated the problem of interaction in a mobile context. Mobile users are often engaged in another task that makes it difficult for them to filter and interact with their mobile device at the same time. Mobile multitasking creates an attention deficit for the user. This paper proposes using butlers as a model to overcome this problem by offloading the burden of interaction from the user to the device. We describe how a suite of butlers can opportunistically and proactively offer information to the user in the moment, allowing mobile users to stay focused on their task at hand.”
© All rights reserved Sohn et al. and/or ACM Press
Sohn, Timothy, Takayama, Leila, Eckles, Dean and Ballagas, Rafael (2009): Auditory priming for upcoming events. In: Proceedings of ACM CHI 2009 Conference on Human Factors in Computing Systems 2009. pp. 4225-4230.
“Psychologically preparing for upcoming events can be a difficult task, particularly when switching social contexts, e.g., from office work to a family event. To help with such transitions, the audio priming system uses pre-recorded audio messages to psychologically prepare a person for an upcoming event. In this system, audio priming is being used to prepare a person's state of mind to improve one's sociability in the upcoming social context.”
© All rights reserved Sohn et al. and/or ACM Press
Setlur, Vidya, Battestini, Agathe, Sohn, Timothy and Horii, Hiroshi (2009): Using gestures on mobile phones to create SMS comics. In: Proceedings of the 4th International Conference on Tangible and Embedded Interaction 2009. pp. 217-220.
“SMS messages provide an easy and simple method to communicate with others. These short messages are useful, but can sometimes feel restricted due to the limitations of textual communication. The ability to express subtle nuances and contexts around the message could help add enjoyment and amplify the emotions being expressed by the mobile user. We present SensorComix, a new way of creating comics using SMS messages combined with gestures on mobile phones. Comics are automatically generated from users' SMS messages, and augmented with visual icons based on the performed gestures. We demonstrate that gestures mapped to comics can help influence the expressiveness of messages sent by mobile users.”
© All rights reserved Setlur et al. and/or their publisher
Sohn, Timothy, Li, Kevin A., Griswold, William G. and Hollan, James D. (2008): A diary study of mobile information needs. In: Proceedings of ACM CHI 2008 Conference on Human Factors in Computing Systems April 5-10, 2008. pp. 433-442.
“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.”
© All rights reserved Sohn et al. and/or ACM Press
Chen, Mike Y., Sohn, Timothy, Chmelev, Dmitri, Hähnel, Dirk, Hightower, Jeffrey, Hughes, Jeff, LaMarca, Anthony, Potter, Fred, Smith, Ian E. and Varshavsky, Alex (2006): Practical Metropolitan-Scale Positioning for GSM Phones. In: Dourish, Paul and Friday, Adrian (eds.) UbiComp 2006 Ubiquitous Computing - 8th International Conference September 17-21, 2006, Orange County, CA, USA. pp. 225-242.
Sohn, Timothy, Varshavsky, Alex, LaMarca, Anthony, Chen, Mike Y., Choudhury, Tanzeem, Smith, Ian E., Consolvo, Sunny, Hightower, Jeffrey, Griswold, William G. and Lara, Eyal de (2006): Mobility Detection Using Everyday GSM Traces. In: Dourish, Paul and Friday, Adrian (eds.) UbiComp 2006 Ubiquitous Computing - 8th International Conference September 17-21, 2006, Orange County, CA, USA. pp. 212-224.
Dey, Anind K., Sohn, Timothy, Streng, Sara and Kodama, Justin (2006): iCAP: Interactive Prototyping of Context-Aware Applications. In: Fishkin, Kenneth P., Schiele, Bernt, Nixon, Paddy and Quigley, Aaron J. (eds.) PERVASIVE 2006 - Pervasive Computing 4th International Conference May 7-10, 2006, Dublin, Ireland. pp. 254-271.
Iachello, Giovanni, Smith, Ian E., Consolvo, Sunny, Abowd, Gregory D., Hughes, Jeff, Howard, James, Potter, Fred, Scott, James, Sohn, Timothy, Hightower, Jeffrey and LaMarca, Anthony (2005): Control, Deception, and Communication: Evaluating the Deployment of a Location-Enhanced Messaging Service. In: Beigl, Michael, Intille, Stephen S., Rekimoto, Jun and Tokuda, Hideyuki (eds.) UbiComp 2005 Ubiquitous Computing - 7th International Conference September 11-14, 2005, Tokyo, Japan. pp. 213-231.
Sohn, Timothy, Li, Kevin A., Lee, Gunny, Smith, Ian E., Scott, James and Griswold, William G. (2005): Place-Its: A Study of Location-Based Reminders on Mobile Phones. In: Beigl, Michael, Intille, Stephen S., Rekimoto, Jun and Tokuda, Hideyuki (eds.) UbiComp 2005 Ubiquitous Computing - 7th International Conference September 11-14, 2005, Tokyo, Japan. pp. 232-250.
Smith, Ian E., Consolvo, Sunny, LaMarca, Anthony, Hightower, Jeffrey, Scott, James, Sohn, Timothy, Hughes, Jeff, Iachello, Giovanni and Abowd, Gregory D. (2005): Social Disclosure of Place: From Location Technology to Communication Practices. In: Gellersen, Hans-Werner, Want, Roy and Schmidt, Albrecht (eds.) PERVASIVE 2005 - Pervasive Computing, Third International Conference May 8-13, 2005, Munich, Germany. pp. 134-151.
LaMarca, Anthony, Chawathe, Yatin, Consolvo, Sunny, Hightower, Jeffrey, Smith, Ian E., Scott, James, Sohn, Timothy, Howard, James, Hughes, Jeff, Potter, Fred, Tabert, Jason, Powledge, Pauline, Borriello, Gaetano and Schilit, Bill N. (2005): Place Lab: Device Positioning Using Radio Beacons in the Wild. In: Gellersen, Hans-Werner, Want, Roy and Schmidt, Albrecht (eds.) PERVASIVE 2005 - Pervasive Computing, Third International Conference May 8-13, 2005, Munich, Germany. pp. 116-133.
Sohn, Timothy (2004): Community-Oriented Programming through Instant Messaging. In: VL-HCC 2004 - IEEE Symposium on Visual Languages and Human-Centric Computing 26-29 September, 2004, Rome, Italy. pp. 294-295.
Sohn, Timothy (2003): Context-aware computing support for the educationally disadvantaged. In: HCC 2003 - IEEE Symposium on Human Centric Computing Languages and Environments 28-31 October, 2003, Auckland, New Zealand. pp. 293-294.
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