Rethinking Mobile Interfaces for Older Adults
SIG Meetings
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Charness, Neil
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Dunlop, Mark
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Munteanu, Cosmin
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Nicol, Emma
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Oulasvirta, Antti
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Ren, Xiangshi
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Sarcar, Sayan
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Silpasuwanchai, Chaklam
Extended Abstracts of the ACM CHI'16 Conference on Human Factors in
Computing Systems
2016-05-07
v.2
p.1131-1134
© Copyright 2016 ACM
Summary: This SIG advances the study of mobile user interfaces for the aging
population. The topic is timely, as the mobile device has become the most
widely used computer terminal and at the same time the number of older people
will soon exceed the number of children worldwide. However, most HCI research
addresses younger adults and has had little impact on older adults. Some design
trends, like the mantra "smaller is smarter", contradict the needs of older
users. Developments like this may diminish their ability to access information
and participate in society. This can lead to further isolation (social and
physical) of older adults and increased widening of the digital divide. This
SIG aims to discuss mobile interfaces for older adults. The SIG has three
goals: (i) to map the state-of-art, (ii) to build a community gathering experts
from related areas, and (iii) to raise awareness within the SIGCHI community.
The SIG will be open to all at CHI.
Design and evaluation of a dwell-free eye typing technique
Works-in-progress
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Chakraborty, Tuhin
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Sarcar, Sayan
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Samanta, Debasis
Proceedings of ACM CHI 2014 Conference on Human Factors in Computing Systems
2014-04-26
v.2
p.1573-1578
© Copyright 2014 ACM
Summary: Dwelling, activated through gaze fixation for a prolonged time, is an
essential task to be performed to select keys from on-screen keyboard present
in the eye typing interface. Normally fixation on a key takes sufficient time
which slows down eye typing rate. To get rid of it, researchers focused on
minimizing or diminishing dwell time toward building a dwell-free interface. In
this paper, we present an efficient dwell-free eye typing mechanism and compare
it with a previous work with respect to text entry rate, learning rate and
usability. The user experiment results reveal that newly proposed method
performed slightly better than the other.
Error quantifying metrics for text entry systems augmented with word
prediction
APCHI 2013: full papers
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Sharma, Manoj Kumar
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Saha, Pradipta Kumar
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Sarcar, Sayan
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Samanta, Debasis
Proceedings of the 2013 Asia Pacific Conference on Computer Human
Interaction
2013-09-24
p.45-54
© Copyright 2013 ACM
Summary: Of late, many text entry systems in users' languages with various text entry
rate enhancement strategies are being proposed. To evaluate the effectiveness
of such text entry systems, measuring error correction efficiency in addition
to text entry rate have been advocated by researcher. Existing metrics for
evaluating text entry errors are found inaccurate to evaluate text entry
systems augmented with word prediction. This work attempts to bridge this gap.
In this work, we redefine existing error classes as well as error quantifying
metrics. In addition to this, we also introduce five different errors classes
and six new metrics relevant to text entry error evaluation in the context of
text entry systems augmented with word prediction. We substantiate the validity
of error classes and efficacy of the metrics with a sufficient number of
instances.
EyeK: an efficient dwell-free eye gaze-based text entry system
APCHI 2013: demos & posters
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Sarcar, Sayan
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Panwar, Prateek
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Chakraborty, Tuhin
Proceedings of the 2013 Asia Pacific Conference on Computer Human
Interaction
2013-09-24
p.215-220
© Copyright 2013 ACM
Summary: Over the last three decades, eye gaze has become an important modality of
text entry in large and small display digital devices covering people with
disabilities beside the able-bodied. Despite of many tools being developed,
issues like minimizing dwell time, visual search time and interface area,
eye-controlled mouse movement stability etc. are still points of concern in
making any gaze typing interface more user friendly, accurate and robust. In
this paper, we propose EyeK, a gaze-based text entry system which diminishes
dwell time and favors to mitigate visual search time. Performance evaluation
shows that proposed interface achieves on an average 15% higher text entry rate
over the existing interfaces. As designed, the proposed interface can
effortlessly be suited in medium-sized display devices like Tablet PC, PDA etc.
Also, the developed system can be used by the people with motor disabilities.
Eyeboard++: an enhanced eye gaze-based text entry system in Hindi
India HCI 2013: full papers
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Sarcar, Sayan
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Panwar, Prateek
Proceedings of the 2013 Asia Pacific Conference on Computer Human
Interaction
2013-09-24
p.354-363
© Copyright 2013 ACM
Summary: Of late, eye gaze has become an important modality of text entry in large
and small display digital devices. Despite many tools being developed, issues
like minimizing dwell time and visual search time, enhancing accuracy of
composed text, eye-controlled mouse movement stability etc. are yet to be
addressed. Moreover, eye typing interfaces having a large number of keys suffer
from many problems like selecting wrong characters, more character searching
time etc. Some linguistic issues often decline in minimizing dwell time
incurred for character by character based eye typing task. The aforementioned
issues are prominently evolved in case of Indian languages for its many
language related issues. In this paper, we propose a gaze-based text entry
system EyeBoard++ for Hindi, national language of India which minimizes dwell
time by introducing word completion and word prediction methodologies side by
side mitigates visual search time by highlighting next probable characters.
Performance evaluation shows that proposed interface achieves text entry rate
on an average 9.63 words per minute. As designed, the proposed interface can
effortlessly be suited in medium-sized display devices like Tablet PC, PDA etc.
The proposed interface design approach, in fact, provides a solution to deal
with complexity in Indian languages and can be extended to many other languages
in the world. Also, the developed system can be used by the people with motor
disabilities.
An Approach to Design Virtual Keyboards for Text Composition in Indian
Languages
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Samanta, Debasis
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Sarcar, Sayan
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Ghosh, Soumalya
International Journal of Human-Computer Interaction
2013-08-03
v.29
n.8
p.516-540
© Copyright 2013 Taylor and Francis
Summary: Of late there has been significant development in Information and
Communication Technology (ICT), which offers interaction with computing systems
in a large scale. Text input mechanisms in users' own languages are necessary
for bringing the ICT advantages to the English illiterates. QWERTY keyboard,
however, which was designed for text entry in English, is not as suitable for
text composition in other languages. As an alternative, researchers advocate
virtual keyboards in users' mother languages. This article proposes an approach
to designing virtual keyboards suitable for text entry in Indian languages.
Composition of texts in Indian languages using virtual keyboards needs special
attention due to the presence of large character sets, complex characters,
inflexions, and so on. First, we examine the suitability of existing design
principles in developing virtual keyboards in Indian languages. Then we propose
a virtual keyboard layout suitable for efficient text entry in Indian
languages. We have tested our approach with the three most spoken languages in
India, namely, Bengali, Hindi, and Telugu. Performance of the keyboards have
been evaluated, and the evaluation substantiates that proposed design achieves
on average higher text entry rather than with conventional virtual keyboards.
The proposed approach, in fact, provides a solution to deal with complexity in
Indian languages and can be extended to many other languages in the world.
Designing an efficient virtual keyboard for text composition in Bengali
Short paper
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Ghosh, Soumalya
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Sarcar, Sayan
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Samanta, Debasis
Proceedings of IndiaHCI'11, the 3rd International Conference on Human
Computer Interaction
2011-04-07
p.84-87
© Copyright 2011 ACM
Summary: Recent advancement in communication and information technology (ICT)
flourishes the computing and handheld devices in urban and rural areas in
India. Now people all over the world communicate each other using hand-held
digital gadgets like PDA, cell phone etc. in addition to desktop PC and laptop.
But, text entry task remains critical in English as well as Indian languages.
Moreover, non-availability of standard mechanism in Indian languages makes
obstruction in better text composition. Text entry through standard hardware
keyboard is not viable in many digital gadgets because of size, mobility
restriction etc. As an alternative to hardware keyboard, virtual keyboard based
text entry has been advocated with easy to personalize, low cost and user
friendliness. This paper proposes an approach to design a virtual keyboard for
text entry in Bengali language. The proposed approach can be extended to other
Indian languages with a minor modification.
