The DOI matches its Crossref record; 83 of the 83 references it cites were found in a registry or an index.
Automated sleep scoring: A review of the latest approaches
Abstract
Clinical sleep scoring involves a tedious visual review of overnight polysomnograms by a human expert, according to official standards. It could appear then a suitable task for modern artificial intelligence algorithms. Indeed, machine learning algorithms have been applied to sleep scoring for many years. As a result, several software products offer nowadays automated or semi-automated scoring services. However, the vast majority of the sleep physicians do not use them. Very recently, thanks to the increased computational power, deep learning has also been employed with promising results. Machine learning algorithms can undoubtedly reach a high accuracy in specific situations, but there are many difficulties in their introduction in the daily routine. In this review, the latest approaches that are applying deep learning for facilitating and accelerating sleep scoring are thoroughly analyzed and compared with the state of the art methods. Then the obstacles in introducing automated sleep scoring in the clinical practice are examined. Deep learning algorithm capabilities of learning from a highly heterogeneous dataset, in terms both of human data and of scorers, are very promising and should be further investigated.
Overview
Integrity signals
Registry
Cites
Statistics
Verification
Claims the paper makes
Claims other papers make about this one
Each is checked against this paper’s own text: does it say what the citing paper says it does?
In the citing paper
“Cognitive biases and the lack of diversity in the training data contribute to inter-and intra-scoring disagreement, posing limitations [63].”
From Ethical Framework for Harnessing the Power of AI in Healthcare and Beyond (2024) · cites this paper as [63]
Citations
Cites
ImageNet classification with deep convolutional neural networks
Krizhevsky, A., Sutskever, I., & Hinton, G. E. (2017) · Communications of the ACM · doi:10.1145/3065386 · Cited by 112,155
Liberati, A., Altman, D. G., Tetzlaff, J., Mulrow, C., Gøtzsche, P. C., Ioannidis, J. P. A., Clarke, M., Devereaux, P. J., Kleijnen, J., & Moher, D. (2009) · PLoS Medicine · doi:10.1371/journal.pmed.1000100 · Cited by 28,164
Deep learning in neural networks: an overview
Schmidhuber, J. (2015) · Neural Networks · doi:10.1016/j.neunet.2014.09.003 · Cited by 18,570
Proceedings of IEEE Conference on Computer Vision and Pattern Recognition
(1993) · IEEE Computer Society Conference on Computer Vision and Pattern Recognition/Proceedings - IEEE Computer Society Conference on Computer Vision and Pattern Recognition/Proceedings · doi:10.1109/cvpr.1993.341010 · Cited by 14,475
Advances in Neural Information Processing Systems 25
Zhang, Y., Sutton, C. A., Storkey, A., & Zoubin Ghahramani, A. (2012) · Cited by 12,653
Rechtschaffen, A. (1968) · Medical Entomology and Zoology · Cited by 11,772
Large-Scale Video Classification with Convolutional Neural Networks
Karpathy, A., Toderici, G., Shetty, S., Leung, T., Sukthankar, R., & Fei-Fei, L. (2014) · 2014 IEEE Conference on Computer Vision and Pattern Recognition · doi:10.1109/cvpr.2014.223 · Cited by 6,354
Hobson, J. A. (1969) · Electroencephalography and Clinical Neurophysiology · doi:10.1016/0013-4694(69)90021-2 · Cited by 5,215
DeepSleepNet: a model for automatic sleep stage scoring based on raw single-channel EEG
Supratak, A., Dong, H., Wu, C., & Guo, Y. (2017) · IEEE Transactions on Neural Systems and Rehabilitation Engineering · doi:10.1109/tnsre.2017.2721116 · Cited by 1,376
The Sleep Heart Health Study: Design, Rationale, and Methods
(1997) · Sleep · doi:10.1093/sleep/20.12.1077 · Cited by 1,331
Regional Slow Waves and Spindles in Human Sleep
Nir, Y., Staba, R. J., Andrillon, T., Vyazovskiy, V. V., Cirelli, C., Fried, I., & Tononi, G. (2011) · Neuron · doi:10.1016/j.neuron.2011.02.043 · Cited by 924
(2015) · IEEE Transactions on Medical Imaging · doi:10.1109/tmi.2015.2417514 · Cited by 712
2014 International Joint Conference on Neural Networks (IJCNN)
(2014) · doi:10.1109/ijcnn32435.2014 · Cited by 699
Phan, H., Andreotti, F., Cooray, N., Chén, O. Y., & Vos, M. D. (2019) · IEEE Transactions on Neural Systems and Rehabilitation Engineering · doi:10.1109/tnsre.2019.2896659 · Cited by 660
Chambon, S., Galtier, M. N., Arnal, P. J., Wainrib, G., & Gramfort, A. (2018) · IEEE Transactions on Neural Systems and Rehabilitation Engineering · doi:10.1109/tnsre.2018.2813138 · Cited by 657
The American Academy of Sleep Medicine Inter-scorer Reliability Program: Sleep Stage Scoring
Rosenberg, R. S., & Van Hout, S. (2013) · Journal of Clinical Sleep Medicine · doi:10.5664/jcsm.2350 · Cited by 456
Neural network analysis of sleep stages enables efficient diagnosis of narcolepsy
Stephansen, J. B., Olesen, A. N., Olsen, M., Ambati, A., Leary, E. B., Moore, H. E., Carrillo, O., Lin, L., Han, F., Yan, H., et al. (2018) · Nature Communications · doi:10.1038/s41467-018-07229-3 · Cited by 455
van de Water, A. T. M., HOLMES, A., & Hurley, D. A. (2010) · Journal of Sleep Research · doi:10.1111/j.1365-2869.2009.00814.x · Cited by 454
A convolutional neural network for sleep stage scoring from raw single-channel EEG
Sors, A., Bonnet, S., Mirek, S., Vercueil, L., & Payen, J. (2018) · Biomedical Signal Processing and Control · doi:10.1016/j.bspc.2017.12.001 · Cited by 435
Fraiwan, L., Lweesy, K. Y., Khasawneh, N., Wenz, H., & Dickhaus, H. (2011) · Computer Methods and Programs in Biomedicine · doi:10.1016/j.cmpb.2011.11.005 · Cited by 433
DANKER‐HOPFE, H., ANDERER, P., ZEITLHOFER, J., BOECK, M., DORN, H., GRUBER, G., HELLER, E., LORETZ, E., MOSER, D., PARAPATICS, S., et al. (2009) · Journal of Sleep Research · doi:10.1111/j.1365-2869.2008.00700.x · Cited by 417
Sleep Stage Classification Using EEG Signal Analysis: A Comprehensive Survey and New Investigation
Aboalayon, K. A. I., Faezipour, M., Almuhammadi, W. S., & Moslehpour, S. (2016) · Entropy · doi:10.3390/e18090272 · Cited by 387
Zhu, G., Li, Y., & Wen, P. P. (2014) · IEEE Journal of Biomedical and Health Informatics · doi:10.1109/jbhi.2014.2303991 · Cited by 381
(2011) · Information Systems Research · doi:10.1287/isre.1110.0382 · Cited by 365
O’Reilly, C., Gosselin, N., Carrier, J., & Nielsen, T. (2014) · Journal of Sleep Research · doi:10.1111/jsr.12169 · Cited by 358
Automatic Sleep Stage Scoring with Single-Channel EEG Using Convolutional Neural NetworksPreprint
Tsinalis, O., Matthews, P. M., Guo, Y., & Zafeiriou, S. P. (2016) · arXiv (Cornell University) · doi:10.48550/arxiv.1610.01683 · Cited by 349
Automatic Sleep Stage Scoring Using Time-Frequency Analysis and Stacked Sparse Autoencoders
Tsinalis, O., Matthews, P. M., & Guo, Y. (2015) · Annals of Biomedical Engineering · doi:10.1007/s10439-015-1444-y · Cited by 328
A comparative review on sleep stage classification methods in patients and healthy individuals
Boostani, R., Karimzadeh, F., & Nami, M. (2016) · Computer Methods and Programs in Biomedicine · doi:10.1016/j.cmpb.2016.12.004 · Cited by 324
Epidemiological Overview of sleep Disorders in the General Population
Ohayon, M. M. (2011) · Sleep Medicine Research · doi:10.17241/smr.2011.2.1.1 · Cited by 311
Liang, S., Kuo, C., Hu, Y., Pan, Y.-H., & Wang, Y.-H. (2012) · IEEE Transactions on Instrumentation and Measurement · doi:10.1109/tim.2012.2187242 · Cited by 306
Automatic sleep stage recurrent neural classifier using energy features of EEG signals
Hsu, Y., Yang, Y., Wang, J.-S., & Hsu, C. (2012) · Neurocomputing · doi:10.1016/j.neucom.2012.11.003 · Cited by 298
Mixed Neural Network Approach for Temporal Sleep Stage Classification
Dong, H., Supratak, A., Pan, W., Wu, C., Matthews, P. M., & Guo, Y. (2017) · IEEE Transactions on Neural Systems and Rehabilitation Engineering · doi:10.1109/tnsre.2017.2733220 · Cited by 298
Expert-level sleep scoring with deep neural networks
Biswal, S., Sun, H., Goparaju, B., Westover, M. B., Sun, J., & Bianchi, M. T. (2018) · Journal of the American Medical Informatics Association · doi:10.1093/jamia/ocy131 · Cited by 290
Şen, B., Peker, M., Çavuşoğlu, A., & Çelebi, F. V. (2014) · Journal of Medical Systems · doi:10.1007/s10916-014-0018-0 · Cited by 288
Anderer, P., Gruber, G., Parapatics, S., Woertz, M., Miazhynskaia, T., Klösch, G., Saletu, B., Zeitlhofer, J., Barbanoj, M. J., Danker‐Hopfe, H., et al. (2005) · Neuropsychobiology · doi:10.1159/000085205 · Cited by 285
A Deep Learning Model for Automated Sleep Stages Classification Using PSG Signals
Yıldırım, Ö., Baloğlu, U. B., & Acharya, U. R. (2019) · International Journal of Environmental Research and Public Health · doi:10.3390/ijerph16040599 · Cited by 273
Signal processing techniques applied to human sleep EEG signals—A review
Motamedi‐Fakhr, S., Moshrefi‐Torbati, M., Hill, M., Hill, C. M., & White, P. R. (2014) · Biomedical Signal Processing and Control · doi:10.1016/j.bspc.2013.12.003 · Cited by 267
Computer based sleep recording and analysis
Penzel, T., & Conradt, R. (2000) · Sleep Medicine Reviews · doi:10.1053/smrv.1999.0087 · Cited by 235
Cloud computing-enabled healthcare opportunities, issues, and applications: A systematic review
Ali, O., Shrestha, A., Soar, J., & Wamba, S. F. (2018) · International Journal of Information Management · doi:10.1016/j.ijinfomgt.2018.07.009 · Cited by 233
Sleep scoring using artificial neural networks
Ronzhina, M., Janoušek, O., Kolářová, J., Novàkovâ, M., Honzík, P., & Provazník, I. (2011) · Sleep Medicine Reviews · doi:10.1016/j.smrv.2011.06.003 · Cited by 230
Güneş, S., Polat, K., & Yosunkaya, Ş. (2010) · Expert Systems with Applications · doi:10.1016/j.eswa.2010.04.043 · Cited by 229
Performance of an Automated Polysomnography Scoring System Versus Computer-Assisted Manual Scoring
Malhotra, A., Younes, M. K., Kuna, S. T., Benca, R. M., Kushida, C. A., Walsh, J. A., Hanlon, A. L., Staley, B. A., Pack, A. I., & Pien, G. W. (2013) · SLEEP · doi:10.5665/sleep.2548 · Cited by 224
Computer-assisted sleep staging
Agarwal, R., & Gotman, J. (2001) · IEEE Transactions on Biomedical Engineering · doi:10.1109/10.966600 · Cited by 220
Odds Ratio Product of Sleep EEG as a Continuous Measure of Sleep State
Younes, M. K., Ostrowski, M., Soiferman, M., Younes, H., Younes, M., Raneri, J. K., & Hanly, P. J. (2015) · SLEEP · doi:10.5665/sleep.4588 · Cited by 211
Sleep stage classification using single-channel EOG
Rahman, M. M., Bhuiyan, M. I. H., & Hassan, A. R. (2018) · Computers in Biology and Medicine · doi:10.1016/j.compbiomed.2018.08.022 · Cited by 182
Deep convolutional neural networks for interpretable analysis of EEG sleep stage scoring
Vilamala, A., Madsen, K. H., & Hansen, L. K. (2017) · Machine learning for signal processing ... · doi:10.1109/mlsp.2017.8168133 · Cited by 171
An end-to-end framework for real-time automatic sleep stage classification
Patanaik, A., Ong, J. L., Gooley, J. J., Ancoli‐Israel, S., & Chee, M. W. L. (2018) · SLEEP · doi:10.1093/sleep/zsy041 · Cited by 170
Participatory Design, User Involvement and Health IT Evaluation
Andre, K., & Christian, N. (2016) · Studies in Health Technology and Informatics · doi:10.3233/978-1-61499-635-4-139 · Cited by 166
38th Annual International Conference of the IEEE Engineering in Medicine and Biology Society
(2015) · IEEE Transactions on Medical Imaging · doi:10.1109/tmi.2015.2462411 · Cited by 160
ANALYSIS AND AUTOMATIC IDENTIFICATION OF SLEEP STAGES USING HIGHER ORDER SPECTRA
Acharya, U. R., Chua, E. C.-P., Chua, K. C., Min, L. C., & TAMURA, T. (2010) · International Journal of Neural Systems · doi:10.1142/s0129065710002589 · Cited by 153
SLEEPNET: Automated Sleep Staging System via Deep LearningPreprint
Biswal, S., Kulas, J. A., Sun, H., Goparaju, B., Westover, M. B., Bianchi, M. T., & Sun, J. (2017) · arXiv (Cornell University) · doi:10.48550/arxiv.1707.08262 · Cited by 151
Automatic Human Sleep Stage Scoring Using Deep Neural Networks
Malafeev, A., Laptev, D., Bauer, S., Omlin, X., Wierzbicka, A., Wichniak, A., Jernajczyk, W., Riener, R., Buhmann, J., & Achermann, P. (2018) · Frontiers in Neuroscience · doi:10.3389/fnins.2018.00781 · Cited by 151
Staging Sleep in Polysomnograms: Analysis of Inter-Scorer Variability
Younes, M. K., Raneri, J. K., & Hanly, P. J. (2016) · Journal of Clinical Sleep Medicine · doi:10.5664/jcsm.5894 · Cited by 134
Automatic sleep stage classification using two-channel electro-oculography
Virkkala, J., Hasan, J., Värri, A. O., Himanen, S., & Müller, K. (2007) · Journal of Neuroscience Methods · doi:10.1016/j.jneumeth.2007.06.016 · Cited by 130
Stepnowsky, C. J., Levendowski, D. J., Popovic, D. P., Ayappa, I. A., & Rapoport, D. M. (2013) · Sleep Medicine · doi:10.1016/j.sleep.2013.04.022 · Cited by 115
Anderer, P., Moreau, A., Woertz, M., Ross, M., Gruber, G., Parapatics, S., Loretz, E., Heller, E., Schmidt, A., Boeck, M., et al. (2010) · Neuropsychobiology · doi:10.1159/000320864 · Cited by 115
Knowledge-based identification of sleep stages based on two forehead electroencephalogram channels
Huang, C.-S., Lin, C.-L., Liwei, K., Liu, S.-Y., Su, T.-P., & Lin, C.-T. (2014) · Frontiers in Neuroscience · doi:10.3389/fnins.2014.00263 · Cited by 93
Pittman, S. D., MacDonald, M., Fogel, R., Malhotra, A., Todros, K., Levy, B., Geva, A. B., & White, D. P. (2004) · SLEEP · doi:10.1093/sleep/27.7.1394 · Cited by 89
Development of an EOG-Based Automatic Sleep-Monitoring Eye Mask
Liang, S., Kuo, C., Lee, Y., Lin, W., Liu, Y., Chen, P., Cherng, F., & Shaw, F. (2015) · IEEE Transactions on Instrumentation and Measurement · doi:10.1109/tim.2015.2433652 · Cited by 89
Classification of Sleep Stages Using Multi-wavelet Time Frequency Entropy and LDA
Lweesy, K. Y., Khasawneh, N., Fraiwan, M., Wenz, H., Dickhaus, H., & Fraiwan, L. (2010) · Methods of Information in Medicine · doi:10.3414/me09-01-0054 · Cited by 85
Automatic Sleep Stage Classification Based on Convolutional Neural Network and Fine‐Grained Segments
Cui, Z., Zheng, X., Shao, X., & Cui, L. (2018) · Complexity · doi:10.1155/2018/9248410 · Cited by 75
Radha, M., Garcia‐Molina, G., Poel, M., & Tononi, G. (2014) · Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC) · doi:10.1109/embc.2014.6943976 · Cited by 69
Computer-Assisted Automated Scoring of Polysomnograms Using the Somnolyzer System
Punjabi, N. M., Shifa, N., Dorffner, G., Patil, S. P., Pien, G. W., & Aurora, R. N. (2015) · SLEEP · doi:10.5665/sleep.5046 · Cited by 67
Mutual information measures applied to EEG signals for sleepiness characterization
Melia, U. S. P., Guaita, M., Vallverdú, M., Embid, C., Vilaseca, I., Salamero, M., & Santamaría, J. (2015) · Medical Engineering & Physics · doi:10.1016/j.medengphy.2015.01.002 · Cited by 64
Younes, M. K., Kuna, S. T., Pack, A. I., Walsh, J. K., Kushida, C. A., Staley, B. A., & Pien, G. W. (2018) · Journal of Clinical Sleep Medicine · doi:10.5664/jcsm.6934 · Cited by 64
Complex-valued unsupervised convolutional neural networks for sleep stage classification
Zhang, J., & Wu, Y. X. (2018) · Computer Methods and Programs in Biomedicine · doi:10.1016/j.cmpb.2018.07.015 · Cited by 61
Svetnik, V., Ma, J., Soper, K. A., Doran, S. M., Renger, J. J., Deacon, S., & Koblan, K. S. (2007) · SLEEP · doi:10.1093/sleep/30.11.1562 · Cited by 59
The case for using digital EEG analysis in clinical sleep medicine
Younes, M. K. (2017) · Sleep Science and Practice · doi:10.1186/s41606-016-0005-0 · Cited by 58
Popovic, D. P., Khoo, M. C. K., & Westbrook, P. R. (2013) · Journal of Sleep Research · doi:10.1111/jsr.12105 · Cited by 53
Utility of Technologist Editing of Polysomnography Scoring Performed by a Validated Automatic System
Younes, M. K., Thompson, W., Leslie, C., Egan, T., & Giannouli, E. (2015) · Annals of the American Thoracic Society · doi:10.1513/annalsats.201411-512oc · Cited by 34
Deep residual networks for automatic sleep stage classification of raw polysomnographic waveforms
Olesen, A. N., Jennum, P., Peppard, P., Mignot, E. J.-M., & Sorensen, H. B. D. (2018) · Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC) · doi:10.1109/embc.2018.8513080 · Cited by 33
Electrooculogram based sleep stage classification using deep belief network
Xia, B., Li, Q., Jia, J., Wang, J., Chaudhary, U., Ramos‐Murguialday, A., & Birbaumer, N. (2015) · International Joint Conference on Neural Networks (IJCNN) · doi:10.1109/ijcnn.2015.7280775 · Cited by 28
Jensen, P. S., Sørensen, H. B. D., Leonthin, H. L., & Jennum, P. (2010) · Journal of Clinical Neurophysiology · doi:10.1097/wnp.0b013e3181eaad4b · Cited by 28
From Usability Engineering to Evidence-based Usability in Health IT
Romaric, M., Peute, L., & Beuscart-Zéphir, M.-C. (2016) · Studies in health technology and informatics · doi:10.3233/978-1-61499-635-4-126 · Cited by 24
Semi-automatic sleep EEG scoring based on the hypnospectrogram
Koupparis, A. M., Kokkinos, V., & Kostopoulos, G. (2013) · Journal of Neuroscience Methods · doi:10.1016/j.jneumeth.2013.10.010 · Cited by 21
Olesen, A. N., Christensen, J. A. E., Sørensen, H. B. D., & Jennum, P. (2016) · Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC) · doi:10.1109/embc.2016.7591548 · Cited by 19
Conscious experience in sleep and wakefulness
Siclari, F., Bassetti, C. L., & Tononi, G. (2013) · Schweizer Archiv für Neurologie und Psychiatrie · doi:10.4414/sanp.2012.00137 · Cited by 10
Self-citationMuto, V., Berthomier, C., Schmidt, C., Vandewalle, G., Jaspar, M., Devillers, J., Chellappa, S. L., Meyer, C., Phillips, C. L. M., Berthomier, P., et al. (2018) · SLEEP · doi:10.1093/sleep/zsy061.314 · Cited by 7
(2014) · doi:10.4230/oasics.slate.2021.16 · Cited by 1
Tay, J. Y., Toh, S., Leow, L. C., & Senin, S. R. (2017) · Sleep Medicine · doi:10.1016/j.sleep.2017.11.957 · Cited by 1
Research works printed but not linked: 2
- Iber, 2007, vol. 1
- Malhotra, 2013, Introduction to sleep stage scoring, Atlas Sleep Med, 77
Cited by
Sorted by citations
Addressing bias in big data and AI for health care: A call for open science
Norori, N., Hu, Q., Aellen, F. M., Faraci, F. D., & Tzovara, A. (2021) · Patterns · doi:10.1016/j.patter.2021.100347 · Cited by 903
Self-citationAn open-source, high-performance tool for automated sleep staging
Vallat, R., & Walker, M. P. (2021) · eLife · doi:10.7554/elife.70092 · Cited by 366
Interrater reliability of sleep stage scoring: a meta-analysis
Lee, Y. J., Lee, J. Y., Cho, J. H., & Choi, J. H. (2021) · Journal of Clinical Sleep Medicine · doi:10.5664/jcsm.9538 · Cited by 178
Towards More Accurate Automatic Sleep Staging via Deep Transfer Learning
Phan, H., Chén, O. Y., Koch, P., Lu, Z., McLoughlin, I. V., Mertins, A., & Vos, M. D. (2020) · IEEE Transactions on Biomedical Engineering · doi:10.1109/tbme.2020.3020381 · Cited by 162
Ethical Framework for Harnessing the Power of AI in Healthcare and Beyond
Nasir, S., Khan, R. A., & Bai, S. (2024) · IEEE Access · doi:10.1109/access.2024.3369912 · Cited by 152
Metadata
- Authors
- Fiorillo, L., Puiatti, A., Papandrea, M., Ratti, P.-L., Favaro, P., Roth, C., Bargiotas, P., Bassetti, C. L., & Faraci, F. D.
- Affiliations
- University of Bern (CH)
- University of Applied Sciences and Arts of Southern Switzerland (CH)
- Centre Hospitalier Universitaire de Martinique (MQ)
- Corresponding author
- Faraci, Francesca D.
- ORCID
- Venue
- Sleep Medicine Reviews
- Publisher
- Elsevier BV
- Published
- 2019-12
- Volume
- 48
- Pages
- 101204
- ISSN
- 1087-0792 (ISSN-L)
- OpenAlex
- W2969159609
- Cited by
- 284
- References
- 83
- Citations by year
- 2026: 29 · 2025: 43 · 2024: 43 · 2023: 64 · 2022: 46 · 2021: 38 · 2020: 20 · 2019: 1
- FWCI
- 3.33
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Sleep Medicine Reviews (publishedVersion)
- PubMed (publishedVersion)
- BORIS (University Library Bern) (submittedVersion)
- Topics
- Life Sciences › Neuroscience › Cognitive Neuroscience › EEG and Brain-Computer Interfaces
- Social Sciences › Psychology › Experimental and Cognitive Psychology › Sleep and related disorders
- Health Sciences › Medicine › Physiology (medical) › Obstructive Sleep Apnea Research
- Keywords
- automated sleep scoring, polysomnography, deep learning, machine learning, clinical implementation barriers, sleep medicine, clinical decision support
- MeSH terms
- Machine Learning, Data Analysis, Algorithms, Diagnosis, Computer-Assisted, Humans, Sleep Wake Disorders, Sleep Stages, Polysomnography
About these checks
Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.
Statistics and arithmetic are recomputed, not judged.
Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.
What counts as a claim ›How we measure confidence ›How we check this ›
Are you an author, or do you see a problem with this page? Request a review