Walter Karlen
Walter Karlen
Mobile Health & AI Systems for Medicine
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Multiparameter Respiratory Rate Estimation from the Photoplethysmogram
W Karlen, S Raman, JM Ansermino, GA Dumont
IEEE Transactions on Biomedical Engineering 60 (7), 1946 - 1953, 2013
Sleep and wake classification with ECG and respiratory effort signals
W Karlen, C Mattiussi, D Floreano
Biomedical Circuits and Systems, IEEE Transactions on 3 (2), 71-78, 2009
Estimating respiratory and heart rates from the correntropy spectral density of the photoplethysmogram
A Garde, W Karlen, JM Ansermino, GA Dumont
PloS one 9 (1), e86427, 2014
Development of a screening tool for sleep disordered breathing in children using the phone Oximeter™
A Garde, P Dehkordi, W Karlen, D Wensley, JM Ansermino, GA Dumont
PloS one 9 (11), e112959, 2014
Photoplethysmogram signal quality estimation using repeated Gaussian filters and cross-correlation
W Karlen, K Kobayashi, JM Ansermino, GA Dumont
Physiological measurement 33 (10), 1617, 2012
CapnoBase: Signal database and tools to collect, share and annotate respiratory signals
W Karlen, M Turner, E Cooke, GA Dumont, JM Ansermino
Annual Meeting of the Society for Technology in Anesthesia (STA) 48, 25, 2010
Capillary refill time: is it still a useful clinical sign?
A Pickard, W Karlen, JM Ansermino
Anesthesia & Analgesia 113 (1), 120-123, 2011
Empirical mode decomposition for respiratory and heart rate estimation from the photoplethysmogram
A Garde, W Karlen, P Dehkordi, JM Ansermino, GA Dumont
Computing in cardiology 2013, 799-802, 2013
Improving the accuracy and efficiency of respiratory rate measurements in children using mobile devices
W Karlen, H Gan, M Chiu, D Dunsmuir, G Zhou, GA Dumont, ...
PloS one 9 (6), e99266, 2014
Adaptive pulse segmentation and artifact detection in photoplethysmography for mobile applications
W Karlen, JM Ansermino, G Dumont
2012 Annual International Conference of the IEEE Engineering in Medicine and …, 2012
Beat by beat: Classifying cardiac arrhythmias with recurrent neural networks
P Schwab, GC Scebba, J Zhang, M Delai, W Karlen
2017 Computing in Cardiology (CinC), 1-4, 2017
Human-centered Phone Oximeter Interface Design for the Operating Room
W Karlen, G Dumont, C Petersen, J Gow, J Lim, J Sleiman, JM Ansermino
HEALTHINF 2011 Proceedings of the International Conference on Health Informatics, 2011
Usability testing of a prototype Phone Oximeter with healthcare providers in high‐and low‐medical resource environments
J Hudson, SM Nguku, J Sleiman, W Karlen, GA Dumont, CL Petersen, ...
Anaesthesia 67 (9), 957-967, 2012
Improving actigraph sleep/wake classification with cardio-respiratory signals
W Karlen, C Mattiussi, D Floreano
Engineering in Medicine and Biology Society, 2008. EMBS 2008. 30th Annual …, 2008
Pulse rate variability compared with heart rate variability in children with and without sleep disordered breathing
P Dehkordi, A Garde, W Karlen, D Wensley, JM Ansermino, GA Dumont
2013 35th Annual International Conference of the IEEE Engineering in …, 2013
Cxplain: Causal explanations for model interpretation under uncertainty
P Schwab, W Karlen
arXiv preprint arXiv:1910.12336, 2019
Granger-causal attentive mixtures of experts: Learning important features with neural networks
P Schwab, D Miladinovic, W Karlen
Proceedings of the AAAI Conference on Artificial Intelligence 33 (01), 4846-4853, 2019
Estimation of respiratory rate from photoplethysmographic imaging videos compared to pulse oximetry
W Karlen, A Garde, D Myers, C Scheffer, JM Ansermino, GA Dumont
IEEE journal of biomedical and health informatics 19 (4), 1331-1338, 2015
Pulse oximeter plethysmograph variation and its relationship to the arterial waveform in mechanically ventilated children
JR Chandler, E Cooke, C Petersen, W Karlen, N Froese, J Lim, ...
Journal of clinical monitoring and computing 26 (3), 145-151, 2012
Design challenges for camera oximetry on a mobile phone
W Karlen, J Lim, JM Ansermino, G Dumont, C Scheffer
2012 Annual International Conference of the IEEE Engineering in Medicine and …, 2012
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