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This paper describes LUCID, the London UCL Clear Speech in Interaction Database, which contains spontaneous and read speech in clear and casual speaking styles for 40 Southern British English speakers. The problem-solving task used to collect the spontaneous speech, the DiapixUK task, is also described, along with ways of using the task to elicit different(More)
This study investigated whether speech produced in spontaneous interactions when addressing a talker experiencing actual challenging conditions differs in acoustic-phonetic characteristics from speech produced (a) with communicative intent under more ideal conditions and (b) without communicative intent under imaginary challenging conditions (read, clear(More)
A consistent finding in health services research is the report of uneven uptake of research findings. Implementation trials have a variable record of success in effectively influencing clinicians' behaviour. A more systematic approach may be to conduct Intervention Modelling Experiments before service-level trials, examining intervention effects on 'interim(More)
We describe a method of synthesising contextually appropriate intonation with limited domain unit selection voices. The method enables the natural language generation component of a dialogue system to specify its intonation choices via APML, an XML-based markup language. In a pilot study, we built an APML-aware limited domain voice for use in flight(More)
In this study, we compare the effects of English lexical features on word duration for native and non-native English speakers and for non-native speakers with different L1s and a range of L2 experience. We also examine whether non-native word durations lead to judgments of a stronger foreign accent. We measured word durations in English paragraphs read by(More)
Executive Summary Where a student attends college has become increasingly important in the last few decades. As education has grown significantly more important in the labor market, competition among students for access to the most selective colleges and universities has grown as well. In this brief we examine patterns of enrollment, by race and family(More)
BACKGROUND Since the inception of the National Institute for Health and Clinical Excellence (NICE) in England, there have been questions about the empirical basis for the cost-per-QALY threshold used by NICE and whether QALYs gained by different beneficiaries of health care should be weighted equally. The Social Value of a QALY (SVQ) project, reported in(More)
We explore the role of redundancy, both in anticipation of and in response to listener confusion, in task-oriented dialogue. We find that direction-givers provide redundant utterances in response to both verbal and non-verbal signals of listener confusion. We also examine the effects of prior acquaintance and visibility upon redundancy. As expected, givers(More)