Publications by Maria Wolters
mwolters.bib
@inproceedings{wolters-icphs:07,
author = {Maria Wolters and Pauline Campbell and Christine
DePlacido and Amy Liddell and David Owens},
title = {The Effect of Hearing Loss on the Intelligibility of
Synthetic Speech},
booktitle = {Proc. Intl. Conf. Phon. Sci.},
abstract = {Many factors affect the intelligibility of synthetic
speech. One aspect that has been severely neglected in
past work is hearing loss. In this study, we
investigate whether pure-tone audiometry thresholds
across a wide range of frequencies (0.25--20kHz) are
correlated with participants performance on a simple
task that involves accurately recalling and processing
reminders. Participants scores correlate not only with
thresholds in the frequency ranges commonly associated
with speech, but also with extended high-frequency
thresholds.},
categories = {},
month = aug,
pdf = {http://www.cstr.inf.ed.ac.uk/downloads/publications/2007/WoltersetalICPhS2007.pdf},
year = 2007
}
@inproceedings{goedde:08,
author = {Florian G\"odde and Sebastian M\"oller and Klaus-Peter
Engelbrecht and Christine K\"uhnel and Robert
Schleicher and Anja Naumann and Maria Wolters},
title = {Study of a Speech-based Smart Home System with Older
Users},
booktitle = {International Workshop on Intelligent User Interfaces
for Ambient Assisted Living},
pages = {17--22},
year = 2008
}
@article{Burton2012,
author = {Christopher Burton and Brian McKinstry and Aurora
Szentagotai Tatar and Antoni Serrano-Blanco and Claudia
Pagliari and Maria Wolters},
title = {Activity monitoring in patients with depression: A
systematic review.},
journal = {Journal of Affective Disorders},
volume = {},
number = {0},
pages = { - },
note = {},
abstract = {Background: Altered physical activity is an important
feature of depression. It is manifested in psychomotor
retardation, agitation and withdrawal from engagement
in normal activities. Modern devices for activity
monitoring (actigraphs) make it possible to monitor
physical activity unobtrusively but the validity of
actigraphy as an indicator of mood state is uncertain.
We carried out a systematic review of digital
actigraphy in patients with depression to investigate
the associations between measured physical activity and
depression. Methods: Systematic review and
meta-analysis. Studies were identified from Medline,
EMBASE and Psycinfo databases and included if they were
either case control or longitudinal studies of
actigraphy in adults aged between 18 and 65 diagnosed
with a depressive disorder. Outcomes were daytime and
night-time activity and actigraphic measures of sleep.
Results: We identified 19 eligible papers from 16
studies (412 patients). Case control studies showed
less daytime activity in patients with depression
(standardised mean difference −0.76, 95% confidence
intervals −1.05 to −0.47). Longitudinal studies
showed moderate increase in daytime activity (0.53,
0.20 to 0.87) and a reduction in night-time activity
(−0.36, −0.65 to −0.06) over the course of
treatment. Limitations: All study participants were
unblinded. Only seven papers included patients treated
in the community. Conclusions: Actigraphy is a
potentially valuable source of additional information
about patients with depression. However, there are no
clear guidelines for use of actigraphy in studies of
patients with depression. Further studies should
investigate patients treated in the community.
Additional work to develop algorithms for
differentiating behaviour patterns is also needed.},
categories = {"Depressive disorder","Actigraphy", "Telemonitoring"},
doi = {10.1016/j.jad.2012.07.001},
issn = {0165-0327},
url = {http://www.sciencedirect.com/science/article/pii/S0165032712005034},
year = 2012
}
@incollection{vipperla2009a,
author = {Vipperla, Ravi Chander and Wolters, Maria and
Georgila, Kallirroi and Renals, Steve},
title = {Speech Input from Older Users in Smart Environments:
Challenges and Perspectives},
booktitle = {Proc. HCI International: Universal Access in
Human-Computer Interaction. Intelligent and Ubiquitous
Interaction Environments},
publisher = {Springer},
number = {5615},
series = {Lecture Notes in Computer Science},
abstract = {Although older people are an important user group for
smart environments, there has been relatively little
work on adapting natural language interfaces to their
requirements. In this paper, we focus on a particularly
thorny problem: processing speech input from older
users. Our experiments on the MATCH corpus show clearly
that we need age-specific adaptation in order to
recognize older users' speech reliably. Language models
need to cover typical interaction patterns of older
people, and acoustic models need to accommodate older
voices. Further research is needed into intelligent
adaptation techniques that will allow existing large,
robust systems to be adapted with relatively small
amounts of in-domain, age appropriate data. In
addition, older users need to be supported with
adequate strategies for handling speech recognition
errors.},
doi = {10.1007/978-3-642-02710-9},
pdf = {http://www.cstr.inf.ed.ac.uk/downloads/publications/2009/vipperla2009a.pdf},
url = {http://www.springerlink.com/content/27r01345r1683251/?p=ad2394d646814db59cf9868b0f74b11e&pi=13},
year = 2009
}
@inproceedings{wolters-aaate:10,
author = {Maria Wolters and Marilyn McGee-Lennon},
title = {Designing Usable and Acceptable Reminders for the Home},
booktitle = {Proc. AAATE Workshop AT Technology Transfer,
Sheffield, UK},
abstract = {Electronic reminders can play a key role in enabling
people to manage their care and remain independent in
their own homes for longer. The MultiMemoHome project
aims to develop reminder designs that are accessible
and usable for users with a range of abilities and
preferences. In an initial exploration of key design
parameters, we surveyed 378 adults from all age groups
online (N=206) and by post (N= 172). The wide spread of
preferences that we found illustrates the importance of
adapting reminder solutions to individuals. We present
two reusable personas that emerged from the research
and discuss how questionnaires can be used for
technology transfer.},
pdf = {http://www.cstr.inf.ed.ac.uk/downloads/publications/2010/Wolters_McGee-Lennon_AAATE_Final.pdf},
year = 2010
}
@inproceedings{Wolters:2012:HTS:2212776.2223703,
author = {Wolters, Maria and Isaac, Karl and Doherty, Jason},
title = {Hold that thought: are spearcons less disruptive than
spoken reminders?},
booktitle = {CHI '12 Extended Abstracts on Human Factors in
Computing Systems},
series = {CHI EA '12},
pages = {1745--1750},
address = {New York, NY, USA},
publisher = {ACM},
acmid = {2223703},
doi = {10.1145/2212776.2223703},
isbn = {978-1-4503-1016-1},
keywords = {irrelevant speech effect, reminders, spearcon, speech,
working memory},
location = {Austin, Texas, USA},
numpages = {6},
url = {http://doi.acm.org/10.1145/2212776.2223703},
year = 2012
}
@article{beaver:07,
author = {David Beaver and Brady Zack Clark and Edward Flemming
and T. Florian Jaeger and Maria Wolters},
title = {When Semantics meets Phonetics: {A}coustical studies
of second occurrence focus},
journal = {Language},
volume = 83,
number = 2,
pages = {245--276},
pdf = {http://www.cstr.inf.ed.ac.uk/downloads/publications/2007/BeaverLanguage2007.pdf},
year = 2007
}
@inproceedings{Wolters:optimi1,
author = { Maria Wolters and Colin Matheson},
title = {Designing {Help4Mood}: Trade-Offs and Choices},
booktitle = { Information and Communication Technologies applied to
Mental Health },
editor = {Garcia-Gomez, Juan Miguel and Paniagua-Paniagua,
Patricia},
publisher = {Editorial Universitat Politecnica de Valencia},
categories = {depression, eHealth},
isbn = {978-84-8363-942-9},
location = {Valencia, Spain},
year = 2012
}
@inproceedings{wolters-ssw:07,
author = {Maria Wolters and Pauline Campbell and Christine
DePlacido and Amy Liddell and David Owens},
title = {Making Synthetic Speech Accessible to Older People},
booktitle = {Proc. Sixth ISCA Workshop on Speech Synthesis, Bonn,
Germany },
abstract = {In this paper, we report on an experiment that tested
users ability to understand the content of spoken
auditory reminders. Users heard meeting reminders and
medication reminders spoken in both a natural and a
synthetic voice. Our results show that older users can
understand synthetic speech as well as younger users
provided that the prompt texts are well-designed, using
familiar words and contextual cues. As soon as
unfamiliar and complex words are introduced, users
hearing affects how well they can understand the
synthetic voice, even if their hearing would pass
common screening tests for speech synthesis
experiments. Although hearing thresholds correlate best
with users performance, central auditory processing
may also influence performance, especially when complex
errors are made.},
categories = {},
month = aug,
pdf = {http://www.cstr.inf.ed.ac.uk/downloads/publications/2007/WoltersetalSSW2007.pdf},
year = 2007
}
@inproceedings{Wolters:bhci,
author = {Wolters, Maria and McCloughan, Lucy and Gibson, Martin
and Weatherall, Chris and Matheson, Colin and Maloney,
Tim and Castro-Robles, Juan Carlos and Estevez, Soraya },
title = {Monitoring People with Depression in the
Community---Regulatory Aspectts},
booktitle = {Workshop on People, Computers and Psychiatry at the
British Computer Society's Conference on Human Computer
Interaction},
pages = {1745--1750},
categories = {depression, regulation, monitoring},
location = {Birmingham, UK},
year = 2012
}
@inproceedings{wolters-interspeech:07,
author = {Maria Wolters and Pauline Campbell and Christine
DePlacido and Amy Liddell and David Owens},
title = {The Role of Outer Hair Cell Function in the Perception
of Synthetic versus Natural Speech},
booktitle = {Proc. Interspeech},
abstract = {Hearing loss as assessed by pure-tone audiometry (PTA)
is significantly correlated with the intelligibility of
synthetic speech. However, PTA is a subjective
audiological measure that assesses the entire auditory
pathway and does not discriminate between the different
afferent and efferent contributions. In this paper, we
focus on one particular aspect of hearing that has been
shown to correlate with hearing loss: outer hair cell
(OHC) function. One role of OHCs is to increase
sensitivity and frequency selectivity. This function of
OHCs can be assessed quickly and objectively through
otoacoustic emissions (OAE) testing, which is little
known outside the field of audiology. We find that OHC
function affects the perception of human speech, but
not that of synthetic speech. This has important
implications not just for audiological and
electrophysiological research, but also for adapting
speech synthesis to ageing ears.},
categories = {},
month = aug,
pdf = {http://www.cstr.inf.ed.ac.uk/downloads/publications/2007/WoltersetalInterspeech2007.pdf},
year = 2007
}
@inproceedings{johnson-aas:09,
author = {Johnson, Christine and Campbell, Pauline and
DePlacido, Christine and Liddell, Amy and Wolters,
Maria},
title = {Does Peripheral Hearing Loss Affect {RGDT} Thresholds
in Older Adults},
booktitle = {Proceedings of the {A}merican {A}uditory {S}ociety
{C}onference},
abstract = {},
categories = {speech synthesis, older users},
month = mar,
pdf = {http://www.cstr.inf.ed.ac.uk/downloads/publications/2009/aas09.pdf},
year = 2009
}
@article{wolters-uais:10,
author = {Maria Wolters and Klaus-Peter Engelbrecht and Florian
G\"odde and Sebastian M\"oller and Anja Naumann and
Robert Schleicher},
title = {Making it Easier for Older People to Talk to Smart
Homes: Using Help Prompts to Shape Users' Speech},
journal = {Universal Access in the Information Society},
volume = {9},
number = {4},
pages = {311-325},
abstract = {It is well known that help prompts shape how users
talk to spoken dialogue systems. This study
investigated the effect of help prompt placement on
older users' interaction with a smart home interface.
In the dynamic help condition, help was only given in
response to system errors; in the inherent help
condition, it was also given at the start of each task.
Fifteen older and sixteen younger users interacted with
a smart home system using two different scenarios. Each
scenario consisted of several tasks. The linguistic
style users employed to communicate with the system
(interaction style) was measured using the ratio of
commands to the overall utterance length (keyword
ratio) and the percentage of content words in the
user's utterance that could be understood by the system
(shared vocabulary). While the timing of help prompts
did not affect the interaction style of younger users,
it was early task-specific help supported older users
in adapting their interaction style to the system's
capabilities. Well-placed help prompts can
significantly increase the usability of spoken dialogue
systems for older people.},
categories = {spoken dialogue systems, usability, older adults,
smart homes, help prompts},
doi = {10.1007/s10209-009-0184-x},
year = 2010
}
@inproceedings{wolters-is:09,
author = {Wolters, Maria and Vipperla, Ravichander and Renals,
Steve},
title = {Age Recognition for Spoken Dialogue Systems: Do We
Need It?},
booktitle = {Proc. Interspeech},
abstract = {When deciding whether to adapt relevant aspects of the
system to the particular needs of older users, spoken
dialogue systems often rely on automatic detection of
chronological age. In this paper, we show that vocal
ageing as measured by acoustic features is an
unreliable indicator of the need for adaptation. Simple
lexical features greatly improve the prediction of both
relevant aspects of cognition and interactions style.
Lexical features also boost age group prediction. We
suggest that adaptation should be based on observed
behaviour, not on chronological age, unless it is not
feasible to build classifiers for relevant adaptation
decisions.},
categories = {age recognition, spoken dialogue systems},
month = sep,
pdf = {http://www.cstr.inf.ed.ac.uk/downloads/publications/2009/is09.pdf},
year = 2009
}
@inproceedings{Wolters:cyber17,
author = {Claudia Pagliari and Maria Wolters and Chris Burton
and Brian McKinstry and Aurora Szentagotai and Antoni
Serrano-Blanco and Daniel David and Luis Ferrini and
Susanna Albertini and Joan Carlos Castro and Soraya
Estévez},
title = {Psychosocial Implications of Avatar Use in Supporting
Therapy of Depression},
booktitle = { CYBER17-17th Annual CyberPsychology & CyberTherapy
Conference},
categories = {depression, cybertherapy, monitoring},
location = {Brussels, Belgium},
year = 2012
}
@inproceedings{georgila:08,
author = {Kallirroi Georgila and Maria Wolters and Vasilis
Karaiskos and Melissa Kronenthal and Robert Logie and
Neil Mayo and Johanna Moore and Matt Watson},
title = {A Fully Annotated Corpus for Studying the Effect of
Cognitive Ageing on Users' Interactions with Spoken
Dialogue Systems},
booktitle = {Proceedings of the 6th International Conference on
Language Resources and Evaluation},
year = 2008
}
@article{wolters-taccess:09,
author = {Maria Wolters and Kallirroi Georgila and Sarah
MacPherson and Johanna Moore},
title = {Being Old Doesn't Mean Acting Old: Older Users'
Interaction with Spoken Dialogue Systems},
journal = {ACM Transactions on Accessible Computing},
volume = {2},
number = {1},
pages = {1--39},
abstract = {Most studies on adapting voice interfaces to older
users work top-down by comparing the interaction
behavior of older and younger users. In contrast, we
present a bottom-up approach. A statistical cluster
analysis of 447 appointment scheduling dialogs between
50 older and younger users and 9 simulated spoken
dialog systems revealed two main user groups, a
“social” group and a “factual” group.
“Factual” users adapted quickly to the systems and
interacted efficiently with them. “Social” users,
on the other hand, were more likely to treat the system
like a human, and did not adapt their interaction
style. While almost all “social” users were older,
over a third of all older users belonged in the
“factual” group. Cognitive abilities and gender did
not predict group membership. We conclude that spoken
dialog systems should adapt to users based on observed
behavior, not on age. },
categories = {spoken dialogue systems, older users, human-computer
interaction},
pdf = {http://www.cstr.inf.ed.ac.uk/downloads/publications/2009/citation.cfm},
year = 2009
}
@inproceedings{owens-efas:07,
author = {David Owens and Pauline Campbell and Amy Liddell and
Christine DePlacido and Maria Wolters},
title = {Random Gap Detection Threshold: A Useful Measure of
Auditory Ageing?},
booktitle = {Proc. Europ. Cong. Fed. Audiol. Heidelberg, Germany},
abstract = {},
categories = {},
month = jun,
pdf = {http://www.cstr.inf.ed.ac.uk/downloads/publications/2007/Owensetal2007EFAS.pdf},
year = 2007
}
@inproceedings{wolters2010,
author = {Wolters, Maria K. and Isaac, Karl B. and Renals, Steve},
title = {Evaluating speech synthesis intelligibility using
{Amazon Mechanical Turk}},
booktitle = {Proc. 7th Speech Synthesis Workshop (SSW7)},
pages = {136--141},
abstract = {Microtask platforms such as Amazon Mechanical Turk
(AMT) are increasingly used to create speech and
language resources. AMT in particular allows
researchers to quickly recruit a large number of fairly
demographically diverse participants. In this study, we
investigated whether AMT can be used for comparing the
intelligibility of speech synthesis systems. We
conducted two experiments in the lab and via AMT, one
comparing US English diphone to US English
speaker-adaptive HTS synthesis and one comparing UK
English unit selection to UK English speaker-dependent
HTS synthesis. While AMT word error rates were worse
than lab error rates, AMT results were more sensitive
to relative differences between systems. This is mainly
due to the larger number of listeners. Boxplots and
multilevel modelling allowed us to identify listeners
who performed particularly badly, while thresholding
was sufficient to eliminate rogue workers. We conclude
that AMT is a viable platform for synthetic speech
intelligibility comparisons.},
categories = {intelligibility, evaluation, semantically
unpredictable sentences, diphone, unit selection,
crowd- sourcing, Mechanical Turk, HMM-based synthesis},
pdf = {http://www.cstr.inf.ed.ac.uk/downloads/publications/2010/wolters-ssw2010.pdf},
year = 2010
}
@inproceedings{Wolters2011,
author = {Wolters, Maria Klara and Johnson, Christine and Isaac,
Karl B},
title = {Can the Hearing Handicap Inventory for Adults Be Used
As a Screen for Perception Experiments?},
booktitle = {Proc. ICPhS XVII},
address = {Hong Kong},
abstract = {When screening participants for speech perception
experiments, formal audiometric screens are often not
an option, especially when studies are conducted over
the Internet. We investigated whether a brief
standardized self-report questionnaire, the screening
version of the Hearing Handicap Inventory for Adults
(HHIA-S), could be used to approximate the results of
audiometric screening. Our results suggest that while
the HHIA-S is useful, it needs to be used with
extremely strict cut-off values that could exclude
around 25\% of people with no hearing impairment who
are interested in participating. Well constructed,
standardized single questions might be a more feasible
alternative, in particular for web experiments.},
categories = {audiometry,hearing handicap inventory,screening},
pdf = {http://www.cstr.inf.ed.ac.uk/downloads/publications/2011/Wolters_icphs.pdf},
year = 2011
}
@inproceedings{wolters-itg:08,
author = {Wolters, Maria and Campbell, Pauline and DePlacido,
Christine and Liddell, Amy and Owens, David},
title = {Adapting {S}peech {S}ynthesis {S}ystems to {U}sers
with {A}ge-{R}elated {H}earing {L}oss},
booktitle = {Beitr{\"a}ge der 8. {ITG} {F}achtagung
{S}prachkommunikation},
abstract = {This paper summarises the main results of a pilot
study into the effect of auditory ageing on the
intelligibility of synthetic speech. 32 older and 12
younger users had to answer simple questions about a
series of meeting reminders and medication reminders.
They also underwent an extensive battery of
audiological and cognitive assessments. Older users
only had more difficulty understanding the synthetic
voice than younger people if they had elevated
pure-tone thresholds and if they were asked to
unfamiliar medication names. We suggest that these
problems can be remedied by better prompt design. User
interviews show that the synthetic voice used was quite
natural. Problems mentioned by users fit the results of
a previous error analysis. },
categories = {speech synthesis, older users},
month = sep,
url = {http://homepages.inf.ed.ac.uk/mwolters/itg08.pdf},
year = 2008
}
@inproceedings{Wolters:medetel,
author = {Wolters, Maria and Ferrini, Louis and
Martinez-Miranda, Juan and Hastie, Helen and Burton,
Chris },
title = {{Help4Mood} - A Flexible Solution for Supporting
People with Depression in the Community across Europe},
booktitle = {Proceedings of The International eHealth, Telemedicine
and Health ICT Forum For Education, Networking and
Business (MedeTel, 2012)},
publisher = {International Society for Telemedicine & eHealth
(ISfTeH)},
categories = {depression, mental health, ehealth},
editors = {Jodanova, E and Lievens, F},
location = {Luxemburg},
year = 2012
}
@inproceedings{georgila-sigdial:10,
author = {Georgila, Kallirroi and Wolters, Maria and Moore,
Johanna D.},
title = {Learning Dialogue Strategies from Older and Younger
Simulated Users},
booktitle = {Proc. SIGDIAL},
abstract = {Older adults are a challenging user group because
their behaviour can be highly variable. To the best of
our knowledge, this is the first study where dialogue
strategies are learned and evaluated with both
simulated younger users and simulated older users. The
simulated users were derived from a corpus of
interactions with a strict system-initiative spoken
dialogue system (SDS). Learning from simulated younger
users leads to a policy which is close to one of the
dialogue strategies of the underlying SDS, while the
simulated older users allow us to learn more flexible
dialogue strategies that accommodate mixed initiative.
We conclude that simulated users are a useful technique
for modelling the behaviour of new user groups.},
pdf = {http://www.cstr.inf.ed.ac.uk/downloads/publications/2010/sigdial_final.pdf},
year = 2010
}
@inproceedings{liddell-efas:07,
author = {Amy Liddell and David Owens and Pauline Campbell and
Christine DePlacido and Maria Wolters},
title = {Can Extended High Frequency Hearing Thresholds be Used
to Detect Auditory Processing Difficulties in an Ageing
Population?},
booktitle = {Proc. Europ. Cong. Fed. Audiol. Heidelberg, Germany},
abstract = {},
categories = {},
month = jun,
year = 2007
}
@article{wolters-iwc:09,
author = {Maria Wolters and Kallirroi Georgila and Robert Logie
and Sarah MacPherson and Johanna Moore and Matt Watson},
title = {Reducing Working Memory Load in Spoken Dialogue
Systems},
journal = {Interacting with Computers},
volume = {21},
number = {4},
pages = {276-287},
abstract = {We evaluated two strategies for alleviating working
memory load for users of voice interfaces: presenting
fewer options per turn and providing confirmations.
Forty-eight users booked appointments using nine
different dialogue systems, which varied in the number
of options presented and the confirmation strategy
used. Participants also performed four cognitive tests
and rated the usability of each dialogue system on a
standardised questionnaire. When systems presented more
options per turn and avoided explicit confirmation
subdialogues, both older and younger users booked
appointments more quickly without compromising task
success. Users with lower information processing speed
were less likely to remember all relevant aspects of
the appointment. Working memory span did not affect
appointment recall. Older users were slightly less
satisfied with the dialogue systems than younger users.
We conclude that the number of options is less
important than an accurate assessment of the actual
cognitive demands of the task at hand.},
categories = {spoken dialogue; ageing; older adults; cognitive
aging; working memory},
pdf = {http://www.cstr.inf.ed.ac.uk/downloads/publications/2009/iwc09.pdf},
year = 2009
}
@inproceedings{mcgeelennon-icad:07,
author = {Marilyn McGee-Lennon and Maria Wolters and Tony
McBryan},
title = {Auditory Reminders in the Home},
booktitle = {Proc. Intl. Conf. Auditory Display (ICAD), Montreal,
Canada},
abstract = {},
categories = {},
month = jun,
year = 2007
}
@inproceedings{moeller:08,
author = {Sebastian M\"oller and Florian G\"odde and Maria
Wolters},
title = {A Corpus Analysis of Spoken Smart-Home Interactions
with Older Users},
booktitle = {Proceedings of the 6th International Conference on
Language Resources and Evaluation},
year = 2008
}
@article{georgila-lrec:10,
author = {Georgila, Kallirroi and Wolters, Maria and Moore,
Johanna D. and Logie, Robert H.},
title = {The {MATCH} Corpus: A Corpus of Older and Younger
Users' Interactions with Spoken Dialogue Systems.},
journal = {Language Resources and Evaluation},
volume = {44},
number = {3},
pages = {221--261},
abstract = {We present the MATCH corpus, a unique data set of 447
dialogues in which 26 older and 24 younger adults
interact with nine different spoken dialogue systems.
The systems varied in the number of options presented
and the confirmation strategy used. The corpus also
contains information about the users' cognitive
abilities and detailed usability assessments of each
dialogue system. The corpus, which was collected using
a Wizard-of-Oz methodology, has been fully transcribed
and annotated with dialogue acts and ``Information
State Update'' (ISU) representations of dialogue
context. Dialogue act and ISU annotations were
performed semi-automatically. In addition to describing
the corpus collection and annotation, we present a
quantitative analysis of the interaction behaviour of
older and younger users and discuss further
applications of the corpus. We expect that the corpus
will provide a key resource for modelling older
people's interaction with spoken dialogue systems. },
doi = {10.1007/s10579-010-9118-8},
keywords = {Spoken dialogue corpora, Spoken dialogue systems,
Cognitive ageing, Annotation, Information states,
Speech acts, User simulations, Speech recognition},
month = {March},
year = 2010
}
@inproceedings{wolters-pqs:10,
author = {Wolters, Maria K. and G\"odde, Florian and M\"oller,
Sebastian and Engelbrecht, Klaus-Peter},
title = {Finding Patterns in User Quality Judgements},
booktitle = {Proc. ISCA Workshop Perceptual Quality of Speech
Systems, Dresden, Germany},
abstract = {User quality judgements can show a bewildering amount
of variation that is diffcult to capture using
traditional quality prediction approaches. Using
clustering, an ex- ploratory statistical analysis
technique, we reanalysed the data set of a Wizard-of-Oz
experiment where 25 users were asked to rate the
dialogue after each turn. The sparse data problem was
addressed by careful a priori parameter choices and
comparison of the results of different cluster
algorithms. We found two distinct classes of users,
positive and critical. Positive users were generally
happy with the dialogue system, and did not mind
errors. Critical users downgraded their opinion of the
system after errors, used a wider range of ratings, and
were less likely to rate the system positively overall.
These user groups could not be predicted by experience
with spoken dialogue systems, attitude to spoken
dialogue systems, anity with technology, demographics,
or short-term memory capacity. We suggest that
evaluation research should focus on critical users and
discuss how these might be identified.},
pdf = {http://www.cstr.inf.ed.ac.uk/downloads/publications/2010/Wolters_et_al_PQS.pdf},
year = 2010
}
@inproceedings{morgan:08,
author = {Maggie Morgan and Marilyn R. McGee-Lennon and Nick
Hine and John Arnott and Chris Martin and Julia S.
Clark and Maria Wolters},
title = {Requirements Gathering with Diverse User Groups and
Stakeholders},
booktitle = {Proc. 26th Conference on Computer-Human Interaction,
Florence},
year = 2008
}
@inproceedings{Wolters:medetel-castro,
author = {Estevez, Soraya and Castro-Robles, Juan Carlos and
Wolters, Maria },
title = {{Help4Mood}: First Release of a Computational
Distributed System to Support the Treatment of Patients
with Major Depression},
booktitle = {Proceedings of The International eHealth, Telemedicine
and Health ICT Forum For Education, Networking and
Business (MedeTel, 2012)},
pages = {1745--1750},
publisher = {International Society for Telemedicine & eHealth
(ISfTeH)},
categories = {depression, mental health, ehealth},
editors = {Jodanova, E and Lievens, F},
location = {Luxemburg},
year = 2012
}
@article{winterboer-csl:11,
author = {Andi K. Winterboer and Martin I. Tietze and Maria K.
Wolters and Johanna D. Moore},
title = {The user-model based summarize and refine approach
improves information presentation in spoken dialog
systems},
journal = {Computer Speech and Language},
volume = {25},
number = {2},
pages = {175-191},
abstract = {A common task for spoken dialog systems (SDS) is to
help users select a suitable option (e.g., flight,
hotel, and restaurant) from the set of options
available. As the number of options increases, the
system must have strategies for generating summaries
that enable the user to browse the option space
efficiently and successfully. In the user-model based
summarize and refine approach (UMSR, Demberg and Moore,
2006), options are clustered to maximize utility with
respect to a user model, and linguistic devices such as
discourse cues and adverbials are used to highlight the
trade-offs among the presented items. In a Wizard-of-Oz
experiment, we show that the UMSR approach leads to
improvements in task success, efficiency, and user
satisfaction compared to an approach that clusters the
available options to maximize coverage of the domain
(Polifroni et al., 2003). In both a laboratory
experiment and a web-based experimental paradigm
employing the Amazon Mechanical Turk platform, we show
that the discourse cues in UMSR summaries help users
compare different options and choose between options,
even though they do not improve verbatim recall. This
effect was observed for both written and spoken
stimuli.},
pdf = {http://www.cstr.inf.ed.ac.uk/downloads/publications/2011/CSL10.pdf},
year = 2011
}
@inproceedings{Wolters:mindcare,
author = {Wolters, Maria and Martínez-Miranda, Juan and Hastie,
Helen and Matheson, Colin},
title = {Managing Data in {Help4Mood}},
booktitle = {The 2nd International Workshop on Computing Paradigms
for Mental Health - MindCare 2012},
categories = {irrelevant speech effect, reminders, spearcon, speech,
working memory},
location = {Vilamoura, Portugal},
year = 2012
}
@inproceedings{penner-icphs:07,
author = {Heike Penner and Nicholas Miller and Maria Wolters},
title = {Motor Speech Disorders in Three {P}arkinsonian
Syndromes: A Comparative Study},
booktitle = {Proc. Intl. Conf. Phon. Sci,},
abstract = {},
categories = {},
year = 2007
}
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