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Raaijmakers, J.G.W. (author), Verduyn, W.W. (author), TNO Technische Menskunde TNO Preventie en Gezondheid (author)
Two experiments are reported that investigated the performance of operators in a fault diagnosis task. Naval engineers working in the Ship's Control Centre (SCC) on board of frigates of the Royal Netherlands Navy were asked to solve a number of unfamiliar fault problems. In the first experiment, it was shown that there was a high correlation (0...
article 1996
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Raaijmakers, J.G.W. (author), Shiffrin, R.M. (author)
Enkele recente mathematische modellen voor het geheugen worden besproken en geevalueerd. Aan de orde komen o.a. associatieve netwerk modellen, modellen gebaseerd op zoekprocessen en modellen met een geditribueerde representatie (o.a. neurale netwerken). Het artikel gaat voorts in op de voor- en nadelen van dit type modellen in vergelijking met...
article 1992
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Bessems, K.M.H.H. (author), van Assema, P. (author), Martens, M.K. (author), Paulussen, T.G.W.M. (author), Raaijmakers, L.G.M. (author), de Rooij, M. (author), de Vries, N.K. (author)
BACKGROUND: Krachtvoer is a Dutch healthy diet programme for prevocational schools, developed in 2001 and revised for a broader target group in 2007, based on the findings of an evaluation of the first version. The goal of this study was to report on the short- and longer-term total and subgroup effects of the revised programme on students'...
article 2012
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Gelinck, G.H. (author), Kumar, A. (author), Moet, D. (author), van der Steen, J.L.P.J. (author), van Breemen, A.J.J.M. (author), Shanmugam, S. (author), Langen, A. (author), Gilot, J. (author), Groen, W.A. (author), Andriessen, H.A.J.M. (author), Simon, M. (author), Ruetten, W. (author), Douglas, A.U. (author), Raaijmakers, R. (author), Malinowski, P.E. (author), Myny, K. (author)
We made and characterized an X-ray detector on a 25-ìm-thick plastic substrate that is capable of medicalgrade performance. As an indirect conversion flat panel detector, it combined a standard scintillator with an organic photodetector (OPD) layer and oxide thin-film transistor backplane. Using solution-processed organic bulk heterojunction...
article 2016
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Peeters, M.M.M. (author), van Diggelen, J. (author), van den Bosch, K. (author), Bronkhorst, A. (author), Neerincx, M.A. (author), Schraagen, J.M. (author), Raaijmakers, S. (author)
Within current debates about the future impact of Artificial Intelligence (AI) on human society, roughly three different perspectives can be recognised: (1) the technology-centric perspective, claiming that AI will soon outperform humankind in all areas, and that the primary threat for humankind is superintelligence; (2) the human-centric...
article 2020
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Raaijmakers, F. (author), Klein Velderman, M. (author)
This article presents results of an evaluation of two local initiatives to support preventive youth healthcare services. Youth mental health specialists were appointed by the municipalities of Nijmegen and Renkum with the aim of 1) strengthening collaboration within the social domain (i.e., school, youth mental healthcare, social team, general...
article 2020
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Verberne, S. (author), van Halteren, H. (author), Theijssen, D. (author), Raaijmakers, S.A. (author), Boves, L. (author)
In this paper, we evaluate a number of machine learning techniques for the task of ranking answers to why-questions. We use TF-IDF together with a set of 36 linguistically motivated features that characterize questions and answers. We experiment with a number of machine learning techniques (among which several classifiers and regression...
article 2011
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van Breemen, A.J.J.M. (author), Simon, M. (author), Tousignant, O. (author), Shanmugam, S. (author), van der Steen, J.L. (author), Akkerman, H.B. (author), Kronemeijer, A. (author), Ruetten, W. (author), Raaijmakers, R. (author), Alving, L. (author), Jacobs, J. (author), Malinowski, P.E. (author), de Roose, F. (author), Gelinck, G.H. (author)
A curved image sensor on plastic foil has been developed for cone beam computed tomography (CBCT) X-ray imaging. The image sensor of about 6 × 8 cm2 size has been built on a thin polyimide foil with an indium gallium zinc oxide (IGZO) backplane and an organic photodetectors (OPD) frontplane. A flexible cesium iodide (CsI) scintillator has been...
article 2020
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Bessems, K.M. (author), van Assema, P. (author), Martens, M.K. (author), Paulussen, T.G. (author), Raaijmakers, L.G. (author), de Vries, N.K. (author)
Background: Krachtvoer is a school-based healthy diet programme, developed in 2001 and revised in 2007 to meet the needs of particular segments of the target population as well as a wider target group. The main aims of the present process evaluation of the revised programme were to examine student and teacher appreciation of the programme,...
article 2011
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Raaijmakers, N. (author), Lokhorst, A. (author), Simons, J. (author), Wilbrink, L. (author)
Hoge werkdruk door een te zware taakbelasting is helaas een bekend verschijnsel in het onderwijs. Door taakbeleid kan die werkdruk verminderen, het zorgt bovendien voor een evenwichtiger verdeling van de werkdruk over het team. Vaak heeft dat een daling van het ziekteverzuim tot gevolg, waardoor er ook minder vervangers hoeven te worden...
book 1999
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van der Waa, J. (author), van Diggelen, J. (author), Neerincx, M. (author), Raaijmakers, S. (author)
End-users of machine learning-based systems benefit from measures that quantify the trustworthiness of the underlying models. Measures like accuracy provide for a general sense of model performance, but offer no detailed information on specific model outputs. Probabilistic outputs, on the other hand, express such details, but they are not...
conference paper 2018
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Raaijmakers, S.F. (author), Steel, F.W. (author), de Goede, M. (author), van Wouwe, N.C. (author), van Erp, J.B.F. (author), Brouwer, A.M. (author)
High heart rate variability (HRV) and low skin conductance level (SCL) have been associated with low levels of stress. Biofeedback - providing an individual with online information about his or her own physiological state – may help to change these signals in the desired direction and therewith improve an individual’s physical or mental...
conference paper 2013
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Kumar, A. (author), Moet, D. (author), van der Steen, J.L. (author), van Breemen, A.J.J.M. (author), Shanmugam, S. (author), Gilot, J. (author), Andriessen, H.A.J.M. (author), Matthias, S. (author), Ruetten, W. (author), Douglas, A. (author), Raaijmakers, R. (author), Malinowski, P.E. (author), Myny, K. (author), Gelinck, G.H. (author)
We demonstrate high performance X-ray imaging detectors on foil suitable for medical grade X-ray imaging applications. The detectors are based on solution-processed organic photodiodes forming bulk-heterojunctions from photovoltaic donor and acceptor blend. The organic photodiodes are deposited using an industrially compatible slot die coating...
conference paper 2011
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Kraaij, W. (author), Raaijmakers, S.A. (author), Elzinga, P. (author), TNO Informatie- en Communicatietechnologie (author)
We propose a novel and intuitive way to quantify the utility of a classifier in cases where automatic classification is deployed as partial replacement of human effort, but accuracy requirements exceed the capabilities of the classifier at hand. in our approach, a binary classifier is combined with a meta-classifier mapping all decisions of the...
conference paper 2008
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Raaijmakers, S. (author), TNO Informatie- en communicatietechnologie (author)
Information diffusion kernels - similarity metrics in non-Euclidean information spaces - have been found to produce state of the art results for document classification. In this paper, we present a novel approach to global sentiment classification using these kernels. We carry out a large array of experiments addressing the well-known movie...
conference paper 2007
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Raaijmakers, S.A. (author), Sappelli, M. (author), Kraaij, W. (author)
In this short paper, we address the interpretability of hidden layer representations in deep text mining: deep neural networks applied to text mining tasks. Following earlierwork predating deep learning methods, we exploit the internal neural network activation (latent) space as a source for performing k-nearest neighbor search, looking for...
conference paper 2017
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Raaijmakers, S. (author), Brewster, C. (author)
conference paper 2018
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de Boer, M.H.T. (author), Bouma, H. (author), Kruithof, M.C. (author), ter Haar, F.B. (author), Fischer, N.M. (author), Hagendoorn, L.K. (author), Joosten, B. (author), Raaijmakers, S. (author)
The information available on-line and off-line, from open as well as from private sources, is growing at an exponential rate and places an increasing demand on the limited resources of Law Enforcement Agencies (LEAs). The absence of appropriate tools and techniques to collect, process, and analyze the volumes of complex and heterogeneous data...
conference paper 2017
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Raaijmakers, S. (author), Versloot, C. (author), de Wit, J. (author), TNO Informatie- en communicatietechnologie (author)
In this paper, we describe the TNO approach to the Finding Related Resources or linking task of VideoCLEF09. Our system consists of a weighted combination of off-the-shelf and proprietary modules, including the Wikipedia Miner toolkit of the University of Waikato. Using this cocktail of largely off-the-shelf technology allows for setting a...
conference paper 2010
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Schavemaker, J.G.M. (author), Doets, P.J. (author), Raaijmakers, S. (author), van Staalduinen, M. (author), Kraaij, W. (author)
conference paper 2011
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