University of Twente Publications
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Mostrando recursos 1 - 20 de 20.459
Transcription of conference room meetings: an investigation - Hain, Thomas; Dines, John; Garau, Giulia; Karafiat, Martin; Moore, Darren; Wan, Vincent; Ordelman, Roeland; Renals, Steve
The automatic processing of speech collected in conference style meetings has attracted considerable interest with several large scale projects devoted to this area. In this paper we explore the use of various meeting corpora for the purpose of automatic speech recognition. In particular we investigate the similarity of these resources and how to efficiently use them in the construction of a meeting transcription system. The analysis shows distinctive features for each resource. However the benefit in pooling data and hence the similarity seems sufficient to speak of a generic conference meeting domain . In this context this paper also presents...
Dealing with Phrase Level Co-Articulation (PLC) in speech recognition: A first approach - Ordelman, Roeland J.F.; Hessen, Arjan J. van; Leeuwen, David A. van
Whereas nowadays within-word co-articulation effects are usually sufficiently dealt with in automatic speech recognition, this is not always the case with phrase level co-articulation effects (PLC). This paper describes a first approach in dealing with phrase level co-articulation by applying these rules on the reference transcripts used for training our recogniser and by adding a set of temporary PLC phones that later on will be mapped on the original phones. In fact we temporarily break down acoustic context into a general and a PLC context. With this method, more robust models could be trained because phones that are confused due...
Towards understanding the value-creation in agile projects - Bakalova, Zornitza Gueorguieva
In recent years, iterative and incremental approaches for software development appeared as an alternative to the traditional, waterfall-style development. The reason for this is the large number of software projects in the past that failed to deliver useful products within budget, and struggled with changing requirements and scope creep. Meanwhile it is a common sense understanding that not all projects are predictable from the beginning. Market uncertainty and a fast changing business environment drives changes during the development of a software product.
One of the key characteristics of any agile approach is its explicit focus on Business Value. Although any software...
Pre-processing input text: improving pronunciation for the fluent Dutch text-to-speech systems - Jansen, Rik; Hessen, Arjan J. van; Pols, Louis C.W.
To improve pronunciation of the Fluent Dutch Text-To-Speech Synthesiser, two pre-processors were built that try to detect problematic cases in input texts and solve these automatically if possible. One pre-processor examines the pronounceability of surnames and company names by checking whether their initial and final two-letter combinations can be handled by the grapheme-to-phoneme rules of the Fluency TTS system, and correcting those automatically when and if possible. Also, common disambiguous abbreviations are properly expanded. The second pre-processor tries to realise pronounceable forms for numbers that do not have a straightforward pronunciation. Structural and contextual information is used in an attempt...
Utterance generation for transaction dialogues - Hulstijn, Joris; Hessen, Arjan van
This paper discusses the utterance generation module of a spoken dialogue system for transactions. Transactions are interesting because they involve obligations of both parties: the system should provide all relevant information; the user should feel committed to the transaction once it has been concluded. Utterance generation plays a major role in this. The utterance generation module works with prosodically annotated utterance templates. An appropriate template for a given dialogue act is selected by the following parameters: utterance type, body of the template, given information, wanted and new information. Templates respect rules of accenting and deaccenting.
Der Einsatz von Sprachtechnologie in Oral-History-Sammlungen - Hessen, Arjan van; Jong, Franciska de; Scagliola, Stef
This book chapter presents an overview of the techniques from the field of automatic speech recognition that can contribute to the enhanced accessibility of online oral history interview collections.
Towards a reusable architecture for message exchange in pervasive healthcare - Cardoso de Moraes, João Luís; Lopes de Souza, Wanderley; Ferreira Pires, Luis; Prado, Antonio Francisco do
The main objective of this paper is to present a reusable architecture for message exchange in pervasive healthcare environments meant to be generally applicable to different applications in the healthcare domain. This architecture has been designed by integrating different concepts and technologies of ubiquitous computing, software agents, and openEHR archetypes, in order to provide interoperability between healthcare systems. The architecture was demonstrated and evaluated in controlled experiments that we conducted at three cardiology clinics, an analysis laboratory, and the cardiology sector of a hospital located in Marília (São Paulo, Brazil). Three applications were developed to evaluate this architecture, and the...
Brain modulation by event-related desynchronization (ERD) guided neurofeedback: toward a new therapy in acute stroke - Tangwiriyasakul, Chayanin
Motor imagery (MI) therapy is suggested to assist motor (re)learning during stroke rehabilitation. During MI training, part of motor neurons is being recruited similar to motor execution. Repetitive recruitment of motor neurons through mental training leads to enhancement and/or restoration of connections among neurons (brain’s plasticity). Clinical gain in restoring motor dysfunction by MI therapy was proven in various chronic stroke patients, but not yet in patients at acute-or-subacute phase, which is considered as a prime period to determine the final outcome after stroke. In acute stroke patients, motor imagery has been shown to be less strong, so it is...
Het FOCUS-project: OpbrengstGericht Werken op basis van prestatie-feedback - Visscher, A.; Peters, M.; Staman, L.
In het FOCUS-project is een tweeejarige training ‘OpbrengstGericht Werken’ voor complete basisschoolteams ontwikkeld. Het is de bedoeling dat basisscholen door de training allereerst leren om de mogelijkheden van het leerlingvolgsysteem dat ze bezitten beter te benutten. De praktijk leert namelijk dat veel scholen maar een klein deel van die mogelijkheden gebruiken. Dat is zonde, omdat onderzoek duidelijk heeft aangetoond dat het goed benutten van feedback waarvan je over de kwaliteit van je eigen handelen leert sterk prestatieverbeterende effecten kan hebben. De training gaat echter verder. Scholen leren vervolgens namelijk om op basis van het inzicht in hun prestaties doelen te...
The lightweight flow engine: a model for rapid development and emulation of telecommunication services - Wood, Thomas Leslie Peter
This thesis explores a method to model network services with particular emphasis on telecommunication controlplane applications. This class of applications is stateful, that is, the application's correct behavior is predicated upon the processing of previous events. Most telecommunication infrastructures are realized by a number of independent organizations, relying upon standards to ensure interoperability. By their very nature, most standards are open to some degree of interpretation, leading to issues during use. One of
the primary motivations for the work described in this thesis has been to be able to rapidly realize and customize control plane applications described using models (messagecharts, statemachines)...
PHP4 - Patient references toward health services provided by the general practioner - Pezij, J.W.; Bredenhoff, E.; Bridges, J.; Vrenken, R.; IJzerman, M.J.
OBJECTIVES: In the Dutch health care system, like many other countries, the general practitioner (GP) plays a key role in securing equity and effectiveness in delivering health care. Nowadays, GPs are often part of primary care centers and it is foreseen that these centers will play an even more important role in future health service delivery. A European comparison in nine different countries concluded patients favour small practices and full time GPs. The percentage of GPs working in small practices varies between countries. In the UK the percentage is 16% whereas in Belgium the percentage is 69% and in Netherlands...
PNC94 - Cost-effectiveness and preference for follow-up scenarios following breast cancer - Sibma, T.S.; Klaase, J.; Siesling, S.; Hans, E.; Hummel, J.M.; IJzerman, M.J.
About one in every eight women in The Netherlands develops breast cancer. Every year, 11,000 new cases are registered and about 3500 women die of breast cancer. Prognosis after primary treatment for patients with breast cancer is improving. This leads to an increased number of patients in follow-up, which leads to increased workload. One of the main goals of follow-up is to improve the survival of patients. This study aims to determine a more individualized follow-up by modelling costeffectiveness of various follow-up scenarios and by determining individual preferences by using a discrete choice experiment (DCE).
METHODS: A discrete-event state-transition model was...
PCV96 - Acceptability of technological treatment and the effect of respondent characteristics on treatment preference - Til, J.A. van; IJzerman, M.
Surgical and/or technological treatment such as nerve stimulation is becoming increasingly popular in the treatment of acquired ankle-foot deformity in rehabilitation medicine. It is known that the older and impaired population can be technology adverse. The purpose of this study was to determine the acceptability of invasive technological treatment to patients and healthy controls and to study the influence of respondent characteristics on the preference for treatment.
A total of 204 Respondents participated in a conjoint analysis discrete choice experiment. Ankle-foot impairment was related to either central neurological (n = 58), or peripheral neurological disease (n = 54). Healthy respondents were...
PIN75 - Economic impact of new malaria diagnostic devices on the malaria control program in Brazil - Quinn, B.P.; Hummel, J.M.; Laubscher, M.; IJzerman, M.J.
This study focuses on the health economical impact of new malaria diagnostic devices on the Malaria control processes in Brazil. Current diagnostic tools have disadvantages which prevent the total coverage of malaria risk regions. As a consequence, there is a high demand for diagnostic devices that can be used in remote settings. The objective of this research is to study the cost-effectiveness of new diagnostic devices.
Markov modeling and Monte Carlo simulation are used to compare the expected cost-effectiveness of the new devices Magneto-Optic Technology (MOT), Rapid Diagnostic Tests (RDT), and Software Aided Microscopy (SAM), with the golden standard of microscopy....
PHP47 - Early assessment of highly innovative medical technology: clinical and economical gains of point-of-care applications for measuring potassium concentrations - Wetering, G.; Hummel, J.M.; Montfoort, A.; IJzerman, M.J.
Innovative point-of-care diagnostics are likely to be having a strong impact on health care. The aim of this study is to conduct an early assessment of point-of-care chips. These chips can detect many particles and, consequently, many product-market combinations can be developed. This study investigates the impact of potential point-of-care applications in health care and to quantify the impact in terms of their likely cost-effectiveness.
The Analytic Hierarchy Process (AHP); a technique for multi-criteria analysis, and Markov modeling were applied in this early assessment. The AHP was used to prioritize six potentially attractive product-market combinations (PCM’s). For estimating the future cost-effectiveness...