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358
Travel recommender systems
- IEEE Intelligent Systems
"... Mobile phones are becoming a primary platform for information access and when coupled with recommender systems technologies they can become key tools for mobile users both for leisure and business applications. Recommendation techniques can increase the usability of mobile systems providing personal ..."
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Cited by 68 (15 self)
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Mobile phones are becoming a primary platform for information access and when coupled with recommender systems technologies they can become key tools for mobile users both for leisure and business applications. Recommendation techniques can increase the usability of mobile systems providing personalized and more focussed content, hence limiting the negative effects of information overload. In this paper we review the major issues and opportunities that the mobile scenario opens to the application of recommender systems especially in the area of travel and tourism. We overview major techniques that have been proposed in the last years and we illustrate the supported functions. We also illustrate specific computational models that have been proposed for mobile recommender systems and we close the paper by presenting some possible future developments and extension in this area. 1
Where on-line meets on-the-streets: experiences with mobile mixed reality games
, 2003
"... We describe two games in which online participants collaborated with mobile participants on the city streets. In the first, the players were online and professional performers were on the streets. The second reversed this relationship. Analysis of these experiences yields new insights into the natur ..."
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Cited by 59 (15 self)
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We describe two games in which online participants collaborated with mobile participants on the city streets. In the first, the players were online and professional performers were on the streets. The second reversed this relationship. Analysis of these experiences yields new insights into the nature of context. We show how context is more socially than technically constructed. We show how players exploited (and resolved conflicts between) multiple indications of context including GPS, GPS error, audio talk, ambient audio, timing, local knowledge and trust. We recommend not overly relying on GPS, extensively using audio, and extending interfaces to represent GPS error.
A Historical View of Context
- COMPUTER SUPPORTED COOPERATIVE WORK: THE JOURNAL OF COLLABORATIVE COMPUTING
, 2004
"... This paper re-examines a number of the approaches, origins and ideals of context--aware systems design, looking particularly at the way that the past influences what we do in our ongoing activity. As a number of sociologists and philosophers have pointed out, past social interaction, as well as past ..."
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Cited by 47 (7 self)
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This paper re-examines a number of the approaches, origins and ideals of context--aware systems design, looking particularly at the way that the past influences what we do in our ongoing activity. As a number of sociologists and philosophers have pointed out, past social interaction, as well as past use of the heterogeneous mix of media, tools and artifacts that we use in our everyday activity, influence our ongoing interaction with the people and media at hand. We suggest that the past is thus part of one's current context, and can be seen as combining and interweaving the temporal and subjective patterns of individuals' use of heterogeneous media as well as objectively structured representations of individual media. Based on this theoretical discussion, we present a number of critiques, examples and suggestions for systems designs that reflect this historical aspect of context, and which make good use of the past in supporting ongoing user activity.
ContextContacts: Re-Designing SmartPhone's Contact Book to Support Mobile Awareness and Collaboration
- IEEE Photon. Technol. Lett
, 2005
"... Acontextuality of the mobile phone often leads to a caller's uncertainty over a callee's current state, which in turn often hampers mobile collaboration. We are interested in re-designing a Smartphone's contact book to provide cues of the current situations of others. ContextContacts ..."
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Cited by 42 (4 self)
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Acontextuality of the mobile phone often leads to a caller's uncertainty over a callee's current state, which in turn often hampers mobile collaboration. We are interested in re-designing a Smartphone's contact book to provide cues of the current situations of others. ContextContacts presents several meaningful, automatically communicated situation cues of trusted others. Its interaction design follows social psychological findings on how people make social attributions based on impoverished cues, on how self-disclosure of cues is progressively and interactionally managed, and on how mobility affects interaction through cues. We argue how our design choices support mobile communication decisions and group coordinations by promoting awareness. As a result, the design is very minimal and integrated, in an "unremarkable" manner, to previously learned usage patterns with the phone. First laboratory and field evaluations indicate important boundary conditions for and promising avenues toward more useful and enjoyable mobile awareness applications.
The Three Paradigms of HCI
- IN PROCEEDINGS OF ALT.CHI [ONLINE]. AVAILABLE: HTTP://PEOPLE.CS.VT.EDU/~SRH/DOWNLOADS/HCI%20JOURNAL%20THETHREEPARADIGMS OFHCI.PDF
, 2007
"... Informal histories of HCI commonly document two major intellectual waves that have formed the field: the first orienting from engineering/human factors with its focus on optimizing man-machine fit, and the second stemming from cognitive science, with an increased emphasis on theory and on what is ha ..."
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Cited by 37 (0 self)
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Informal histories of HCI commonly document two major intellectual waves that have formed the field: the first orienting from engineering/human factors with its focus on optimizing man-machine fit, and the second stemming from cognitive science, with an increased emphasis on theory and on what is happening not only in the computer but, simultaneously, in the human mind. In this paper, we document underlying forces that constitute a third wave in HCI and suggest systemic consequences for the CHI community. We provisionally name this the ‘phenomenological matrix’. In the course of creating technologies such as ubiquitous computing, visualization, affective and educational technology, a variety of approaches are addressing issues that are bad fits to prior paradigms, ranging from embodiment to situated meaning to values and social issues. We demonstrate the underlying unity of these approaches, and document how they suggest the centrality of currently marginal criteria for design, evaluation, appreciation, and developmental methodology in CHI work.
The user-subjective approach to personal information management systems
- Journal of the American Society for Information Science and Technology
, 2003
"... 1 Personal Information Management (PIM) is an activity in which an individual stores his\her personal information items in order to retrieve them later on. In a former article, we suggested the user-subjective approach, a theoretical approach proposing design principles with which PIM systems can sy ..."
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Cited by 37 (7 self)
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1 Personal Information Management (PIM) is an activity in which an individual stores his\her personal information items in order to retrieve them later on. In a former article, we suggested the user-subjective approach, a theoretical approach proposing design principles with which PIM systems can systematically use subjective attributes of information items. In this consecutive paper, we report on a study that tested the approach by exploring the use of subjective attributes (project, importance and context) in current PIM systems, and its dependence on design characteristics. Participants were 84 personal computer users. Tools included a questionnaire (N=84), a semi-structured interview that was transcribed and analyzed (N=20), and screen captures taken from this sub-sample. Results indicate that participants tended to use subjective attributes when the design encouraged them to, however, when the design discouraged such use, they either found their own alternative ways to use them or refrained from using them altogether. This constitutes evidence in support of the user-subjective approach as it
Towards Autonomous Agents for Live Computer Music: Realtime Machine Listening and Interactive Music Systems
, 2006
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A model for understanding collaborative information behavior in context: A study of two healthcare teams
, 2008
"... Collaborative information behavior is an essential aspect of organizational work; however, we have very limited understanding of this behavior. Most models of information behavior focus on the individual seeker of information. In this paper, we report the results from two empirical studies that inve ..."
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Cited by 34 (3 self)
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Collaborative information behavior is an essential aspect of organizational work; however, we have very limited understanding of this behavior. Most models of information behavior focus on the individual seeker of information. In this paper, we report the results from two empirical studies that investigate aspects of collaborative information behavior in organizational settings. From these studies, we found that collaborative information behavior differs from individual information behavior with respect to how individuals interact with each other, the complexity of the information need, and the role of information technology. There are specific triggers for transitioning from individual to collaborative information behavior, including lack of domain expertise. The information retrieval technologies used affect collaborative information behavior by acting as important supporting mechanisms. From these results and prior work, we develop a model of collaborative information behavior along the axes of participant behavior, situational elements, and contextual triggers. We also present characteristics of collaborative information system including search, chat, and sharing. We discuss implications for the design of collaborative information retrieval systems and directions for future work.
Informing the Development of Calendar Systems for Domestic Use
- Proc. ECSCW '03
, 2003
"... Abstract. This paper contributes to the design of Groupware Calendar Systems (GCSs) for use in domestic life. We consider a number of ethnographic studies of calendar use in domestic circumstances to illuminate the design space and inform design reasoning. GCSs have been employed in the workplace fo ..."
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Cited by 34 (0 self)
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Abstract. This paper contributes to the design of Groupware Calendar Systems (GCSs) for use in domestic life. We consider a number of ethnographic studies of calendar use in domestic circumstances to illuminate the design space and inform design reasoning. GCSs have been employed in the workplace for sometime and have been informed by studies of ‘calendar work’. As design moves out of the workplace and into the home, the unique demands of domestic use now need to be considered. Existing insights into calendar work are restricted to the workplace however, and are constrained by analytic taxonomies. In the absence of first-hand knowledge of calendar use in domestic settings, we suspend the use of taxonomies and describe the ‘interpretive work ’ implicated in calendar work in order to explicate real world practices of calendar use in domestic life. These novel studies draw attention to a corpus of accountable work-practices that impact directly on design. In particular, they emphasize the need for design to consider how the physical and the digital may be merged to support collaboration ‘anywhere, anytime’; the necessity of devising negotiation protocols supporting computer-mediated communication; and the development of collaborative access models and interaction techniques to support data sharing.
