assessing feedback for indirect shared interaction
DESCRIPTION
Just skyped this presentation to OTM-MONET in Greece, about the paper:http://www.mendeley.com/research/assessing-feedback-indirect-shared-interaction/TRANSCRIPT
Assessing Feedback for Indirect Shared Interac5on with Public
Displays
Jorge C. S. Cardoso – [email protected] Rui José – [email protected]
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Our work
• Study and develop an interacAon abstracAon – We are starAng with the concept of widget and adapAng it to the public display seEng
• In this paper, we focused on the feedback to user input
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Target public display applicaAon environment
• Environment for public display applicaAons – MulAple displays – MulAple applicaAons scheduled for each display – MulAple interacAon mechanisms – MulAple interacAon points for an applicaAon
• Personal mobile devices, dedicated input devices – Ubiquity of interacAon and informaAon
• Not focused only on the public display: • interacAon can happen even if the applicaAon is not currently being shown on the public display
• ApplicaAons can have mulAple informaAon outlets: web, mobile device, etc.
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MoAvaAon
• InteracAon is import for the success of public displays, but
• It is sAll hard to incorporate interacAvity into public display applicaAons, because
• “At present, there are no accepted standards, paradigms, or design principles for remote interacAon with large, pervasive displays.” [1]
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MoAvaAon
• There are no interacAon abstracAons for public displays that take into account: – the heterogeneous input mechanisms – the mulA-‐user, shared and possibly remote interacAon environment
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Widgets
• Our iniAal set of widgets maintain the graphical affordances of the desktop widgets
• But they can be interacted with in a very different way – They have explicit, human-‐readable, ids that can be used with several input mechanisms
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Study
• Widgets should provide system-‐level input feedback – But given the mulA-‐user, shared, remote interacAon seEng, we must develop a feedback mechanism specific for public displays • Independent of the input mechanism • FuncAoning as a sharing mechanism to enAce further interacAon [2]
• The purpose of this study was to assess how well users understood the feedback mechanism
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Widgets 8
Feedback Mechanism • The feedback is shown directly on the public display (inside or near the graphical representaAon of the widget) – It includes a masked idenAficaAon of the user that interacted
– It also includes an indicaAon of whether the input was accepted (widgets may be temporarily disabled and not accept the input)
• We tested three variaAons – Internal: Uses the text components of the widget – External: Uses a pop up for every input – External-‐CumulaAve: Uses the same pop up for the all inputs within a small Ame period
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Feedback Internal External External-‐CumulaAve
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Procedure • We asked parAcipants to interact with mockup applicaAons and interpret the
feedback
• Using SMS messages to interact – The feedback used the phone number to idenAfy the user
• Three groups of users were subjected to the three variaAons
• Three parts – Single user interacAng with the display – MulAple users interacAng with the display – QuesAonnaire to assess subjecAve preferences
• We asked users to interact and interpret the feedback – And measured the errors in their answers
• We also asked them to compare the three variaAons and tell us which one they preferred
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Part 1 and 2: Error results
INT EXT
0.0
1.0
2.0
3.0
Part 1 − Single−user
INT EXT E−C0
24
68
Part 2 − Multi−user
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Part 3
BEST WORST
INTERNALEXTERNALEXTERNAL_CUMULATIVE
%
020
4060
80100
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Conclusions
• The External-‐CumulaAve was clearly preferred and had the best performance
• This study was a controlled experiment so we sAll need a real seEng evaluaAon, but the results seem to indicate that, generally, the feedback mechanism is understandable.
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References • [1] Bellucci, A., Malizia, A., Diaz, P., & Aedo, I. (2010). Human-‐Display InteracAon
Technology: Emerging Remote Interfaces for Pervasive Display Environments. IEEE Pervasive CompuAng, 9(2), 72-‐76. IEEE. doi:10.1109/MPRV.2010.30
• [2] Brignull, H., & Rogers, Y. (2003). EnAcing People to Interact with Large Public Displays in Public Spaces. In M. Rauterberg, M. Menozzi, & J. Wesson (Eds.), INTERACT’03 (pp. 17-‐24). IOS Press. Retrieved from hpp://dblp.uni-‐trier.de/db/conf/interact/interact2003.html#BrignullR03
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The End
• Thank you.
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