Relevant bibliographies by topics / Kappa coefficient

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  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers

Academic literature on the topic 'Kappa coefficient'

Author: Grafiati
Published: 4 June 2021
Last updated: 28 January 2023

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Journal articles on the topic "Kappa coefficient"

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Lin, Yuan Horng. "Fuzzy Kappa Coefficient with Simulated Comparisons." Applied Mechanics and Materials 303-306 (February 2013): 372–75. http://dx.doi.org/10.4028/www.scientific.net/amm.303-306.372.

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The purpose of this study is to provide a new Kappa coefficient based on fuzzy scoring. This new Kappa is called fuzzy Kappa. Fuzzy theory has been widely used in quantitative research and many researches indicate its positive utility. Moreover, viewpoints of measurement according to fuzzy theory conform to the thinking of human thoughts. Therefore, it is feasible to measure the scoring of decision-making or judgment. In addition, Kappa coefficient is one kind of rater reliability and it is to measure the consistency on judgment among raters. Traditional Kappa coefficient is based on the crisp
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Thompson, W. Douglas, and Stephen D. Walter. "A rEAPPRAISAL OF THE KAPPA COEFFICIENT." Journal of Clinical Epidemiology 41, no. 10 (1988): 949–58. http://dx.doi.org/10.1016/0895-4356(88)90031-5.

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Warrens, Matthijs J. "New Interpretations of Cohen’s Kappa." Journal of Mathematics 2014 (2014): 1–9. http://dx.doi.org/10.1155/2014/203907.

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Cohen’s kappa is a widely used association coefficient for summarizing interrater agreement on a nominal scale. Kappa reduces the ratings of the two observers to a single number. With three or more categories it is more informative to summarize the ratings by category coefficients that describe the information for each category separately. Examples of category coefficients are the sensitivity or specificity of a category or the Bloch-Kraemer weighted kappa. However, in many research studies one is often only interested in a single overall number that roughly summarizes the agreement. It is sho
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De Raadt, Alexandra, Matthijs J. Warrens, Roel J. Bosker, and Henk A. L. Kiers. "Kappa Coefficients for Missing Data." Educational and Psychological Measurement 79, no. 3 (2019): 558–76. http://dx.doi.org/10.1177/0013164418823249.

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Cohen’s kappa coefficient is commonly used for assessing agreement between classifications of two raters on a nominal scale. Three variants of Cohen’s kappa that can handle missing data are presented. Data are considered missing if one or both ratings of a unit are missing. We study how well the variants estimate the kappa value for complete data under two missing data mechanisms—namely, missingness completely at random and a form of missingness not at random. The kappa coefficient considered in Gwet ( Handbook of Inter-rater Reliability, 4th ed.) and the kappa coefficient based on listwise de
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Kvålseth, Tarald O. "Measurement of Interobserver Disagreement: Correction of Cohen’s Kappa for Negative Values." Journal of Probability and Statistics 2015 (2015): 1–8. http://dx.doi.org/10.1155/2015/751803.

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As measures of interobserver agreement for both nominal and ordinal categories, Cohen’s kappa coefficients appear to be the most widely used with simple and meaningful interpretations. However, for negative coefficient values when (the probability of) observed disagreement exceeds chance-expected disagreement, no fixed lower bounds exist for the kappa coefficients and their interpretations are no longer meaningful and may be entirely misleading. In this paper, alternative measures of disagreement (or negative agreement) are proposed as simple corrections or modifications of Cohen’s kappa coeff
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Gjørup, Thomas. "The Kappa Coefficient and the Prevalence of a Diagnosis." Methods of Information in Medicine 27, no. 04 (1988): 184–86. http://dx.doi.org/10.1055/s-0038-1635539.

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SummaryThe kappa coefficient is a widely used measure of agreement between observers’ independent recording of diagnoses. Kappa adjusts the overall agreement for expected chance agreement. The dependence of kappa on the prevalence . of a diagnosis has not previously been emphasized. This dependence means that kappa does not give a general statement of the reproducibility of a diagnosis. The result of a study of observer agreement should, therefore, not – as it has been done in several studies – be given by the kappa value alone. The kappa value should always be given together with the original
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Nguyen, Loc. "A Fast Computational Formula for Kappa Coefficient." Science Journal of Clinical Medicine 4, no. 1 (2015): 1. http://dx.doi.org/10.11648/j.sjcm.20150401.11.

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Vanbelle, Sophie. "Asymptotic variability of (multilevel) multirater kappa coefficients." Statistical Methods in Medical Research 28, no. 10-11 (2018): 3012–26. http://dx.doi.org/10.1177/0962280218794733.

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Agreement studies are of paramount importance in various scientific domains. When several observers classify objects on categorical scales, agreement can be quantified through multirater kappa coefficients. In most statistical packages, the standard error of these coefficients is only available under the null hypothesis that the coefficient is equal to zero, preventing the construction of confidence intervals in the general case. The aim of this paper is triple. First, simple analytic formulae for the standard error of multirater kappa coefficients will be given in the general case. Second, th
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Lipsitz, Stuart R., Nan M. Laird, Troyen A. Brennan, and Michael Parzen. "Estimating the kappa-coefficient from a Selected Sample." Journal of the Royal Statistical Society: Series D (The Statistician) 50, no. 4 (2001): 407–16. http://dx.doi.org/10.1111/1467-9884.00286.

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Luz, Laércio Lima, Lívia Maria Santiago, João Francisco Santos da Silva, and Inês Echenique Mattos. "Psychometric properties of the Brazilian version of the Vulnerable Elders Survey-13 (VES-13)." Cadernos de Saúde Pública 31, no. 3 (2015): 507–15. http://dx.doi.org/10.1590/0102-311x00011714.

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This study aims to assess the psychometric properties of the Brazilian version of the Vulnerable Elders Survey-13 (VES-13). Interviews were carried out with individuals aged 60 years and over receiving care at an ambulatory cancer centre. Test-retest reliability was assessed using the Spearman correlation coefficient, intraclass correlation coefficients and Cohen's kappa coefficient. Construct validity was assessed by testing convergent and discriminant validity using principal component analysis and Varimax rotation. The Spearman correlation coefficient value of the comparison between test an
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Dissertations / Theses on the topic "Kappa coefficient"

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Robin, Stéphane. "Analyse de sensibilite de tests non-parametriques adaptes aux donnees censurees." Paris 5, 1994. http://www.theses.fr/1993PA05S013.

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Quand on veut tester l'efficacite d'un traitement et que la reponse a ce traitement se presente sous la forme d'une duree de vie (eventuellement censuree), on a le plus souvent recours a des tests non-parametriques tels que les tests du logrank pondere. L'utilisation de tels tests repose sur l'hypothese que le traitement a ete attribue au hasard, c'est-a-dire que tous les individus avaient, a priori, la meme probabilite de recevoir le traitement. On propose une methode permettant de repondre a la question : quelle confiance accorder aux resultats d'une telle etude si l'hypothese d'equiprobabil
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Bonnardel, Philippe. "Test statistique Kappa : programmation informatique et applications pratiques." Paris 5, 1996. http://www.theses.fr/1996PA05P072.

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Xier, Li. "Kappa — A Critical Review." Thesis, Uppsala University, Department of Statistics, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-126672.

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<p>The Kappa coefficient is widely used in assessing categorical agreement between two raters or two methods. It can also be extended to more than two raters (methods).  When using Kappa, the shortcomings of this coefficient should be not neglected.  Bias and prevalence effects lead to paradoxes of Kappa. These problems can be avoided by using some other indexes together, but the solutions of the Kappa problems are not satisfactory. This paper gives a critical survey concerning the Kappa coefficient and gives a real life example. A useful alternative statistical approach, the Rank-invariant me
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Hodgson, Lucien Guy, and n/a. "Cotton crop condition assessment using arial video imagery." University of Canberra. Applied Science, 1991. http://erl.canberra.edu.au./public/adt-AUC20060725.144909.

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Cotton crop condition was assessed from an analysis of multispectral aerial video imagery. Visible-near infrared imagery of two cotton fields was collected towards the end of the 1990 crop. The digital analysis was based on image classification, and the accuracies were assessed using the Kappa coefficient of agreement. The earliest of three images proved to be best for distinguishing plant variety. Vegetation index images were better for estimating potential yield than the original multispectral image; so too were multi-channel images that were transformed using vegetation indices or principal
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Dou, Weibei. "Segmentation d'images multispectrales basée surla fusion d'informations : application aux images IRM." Phd thesis, Université de Caen, 2006. http://tel.archives-ouvertes.fr/tel-00111904.

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L'objectif de cette thèse consiste à développer une architecture de<br />fusion d'informations basée sur la théorie floue pour la segmentation<br />d'une cible à partir de plusieurs sources d'images. Notre application<br />principale porte sur la segmentation des images IRM multispectrales. Nous proposons une approche de segmentation automatique basée sur la fusion des caractéristiques extraites de chaque source d'image. Ces caractéristiques sont modélisées par des fonctions d'appartenance, obtenues à partir de fonctions analytiques, qui prennent en compte des connaissances a priori sur la pos
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Dou, Weibei. "Segmentation d'images multispectrales basée sur la fusion d'informations : application aux images IRM." Caen, 2006. http://www.theses.fr/2006CAEN2026.

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L'objectif de cette thèse consiste à développer une architecture de fusion d'informations basée sur la théorie floue pour la segmentation d'une cible à partir de plusieurs sources d'images. Notre application principale porte sur la segmentation des images IRM multispectrales. Nous proposons une approche de segmentation automatique basée sur la fusion des caractéristiques extraites de chaque source d'image. Ces caractéristiques sont modélisées par des fonctions d'appartenance, obtenues à partir de fonctions analytiques, qui prennent en compte des connaissances à priori sur la possibilité d'appa
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Silva, Gabriella Cynara Minora da. "Diagn?stico da degrada??o ambiental no munic?pio de Areia Branca-RN por geotecnologias." Universidade Federal do Rio Grande do Norte, 2013. http://repositorio.ufrn.br:8080/jspui/handle/123456789/18247.

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Made available in DSpace on 2014-12-17T15:55:04Z (GMT). No. of bitstreams: 1 GabriellaCMS_DISSERT.pdf: 3451606 bytes, checksum: 1ee33015b3633fb79771b6160bff6a6c (MD5) Previous issue date: 2013-02-25<br>Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior<br>The municipality of Areia Branca is within the mesoregion of West Potiguar and within the microregion of Mossor?, covering an area of 357,58 km2. Covering an area of weakness in terms of environmental, housing, together with the municipality of Grossos-RN, the estuary of River Apodi-Mossor?. The municipality of Areia Branca has his
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Bier, Vanderlei Artur. "Construção e avaliação de mapas." Universidade Estadual do Oeste do Parana, 2015. http://tede.unioeste.br:8080/tede/handle/tede/256.

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Made available in DSpace on 2017-05-12T14:47:32Z (GMT). No. of bitstreams: 1 Vanterlei _Artur Bier.pdf: 3411579 bytes, checksum: 9d27d1df8109289eb3cf3192d069b831 (MD5) Previous issue date: 2015-02-23<br>The precision agriculture (PA) is defined as the use of site specific management techniques that allow cropping management according to its needs and soil, in order to reduce impacts on the environment. The models valuation that interpolates field data and generates thematic maps is a task that requires in-depth knowledge on this issue. The Cohen Kappa index (K) is the most widely statistics
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Cheng, Yu Chun, and 鄭宇君. "Estimation of intraclass correlation coefficient and Kappa statistic in categorical data." Thesis, 1995. http://ndltd.ncl.edu.tw/handle/93387061533488183894.

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Lee, Yi-Hsuan, and 李怡萱. "Robust likelihood analysis of the agreement kappa coefficient for paired nominal and paired ordinal data." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/4xd3dc.

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碩士<br>國立中央大學<br>統計研究所<br>106<br>In this paper, we construct a robust likelihood function for the agreement kappa/weighted kappa coefficient for clustered paired data in the case of three-category diagnostic outcome scenario. Utilizing this robust likelihood function, one can construct robust likelihood ratio (LR) statistic and LR-based confidence intervals without specifically modeling the intra-cluster correlation. We also make comparison between our robust likelihood approach and the nonparametric inferential method for kappa with paired data proposed by Yang and Zhou (2014, 2015) via simula
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Books on the topic "Kappa coefficient"

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Streiner, David L., Geoffrey R. Norman, and John Cairney. Reliability. Oxford University Press, 2015. http://dx.doi.org/10.1093/med/9780199685219.003.0008.

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This chapter reviews the basic theory of reliability, and examines the relation between reliability and measurement error. It derives the standard form of reliability, the intraclass correlation or ICC, from repeated measures ANOVA. The chapter explores issues in the application of the reliability coefficient, including absolute versus relative reliability, the reliability of multiple observations, and the standard error of measurement. It examines several other measures of reliability—Cohen’s kappa, Pearson r, and the method of Altman and Bland—and derives the relation between them and the IC
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Hernández-Nieto, Rafael. Contributions to Statistical Analysis: The Coefficients of Proportional Variance, Content Validity and Kappa. BookSurge Publishing, 2002.

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Book chapters on the topic "Kappa coefficient"

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Franzen, Michael. "Kappa Coefficient." In Encyclopedia of Clinical Neuropsychology. Springer New York, 2011. http://dx.doi.org/10.1007/978-0-387-79948-3_1210.

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Franzen, Michael. "Kappa Coefficient." In Encyclopedia of Clinical Neuropsychology. Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-56782-2_1210-2.

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Franzen, Michael. "Kappa Coefficient." In Encyclopedia of Clinical Neuropsychology. Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-57111-9_1210.

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Kvålseth, Tarald O. "Kappa Coefficient of Agreement." In International Encyclopedia of Statistical Science. Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-04898-2_323.

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Legrand, Gaelle, and Nicolas Nicoloyannis. "Data Preprocessing and Kappa Coefficient." In Lecture Notes in Computer Science. Springer Berlin Heidelberg, 2005. http://dx.doi.org/10.1007/11548669_19.

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Singh, Sunil, Navin Ram Daruka, Megha Shukla, and Ashok Deshpande. "Role of Fuzzy Set Theory and Kappa Coefficient in Urological Disease Diagnosis." In Data Science and Analytics. Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-5827-6_36.

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Kraemer, Helena Chmura, Vyjeyanthi S. Periyakoil, and Art Noda. "Agreement Statistics: Kappa Coefficients in Medical Research." In Tutorials in Biostatistics. John Wiley & Sons, Ltd, 2005. http://dx.doi.org/10.1002/0470023678.ch1c.

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"Kappa Coefficient of Agreement." In There’s a Stat for That!: What to Do & When to Do It. SAGE Publications, Inc., 2016. http://dx.doi.org/10.4135/9781071909775.n25.

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Wang, Jingfa. "A Study of Forest Swamp Mapping in Hani Wetland Integrating Sentinel-1 and Sentinel-2 Satellite Images." In Proceedings of CECNet 2021. IOS Press, 2021. http://dx.doi.org/10.3233/faia210392.

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As a unique wetland type, forest swamps play an important role in regional carbon cycling and biodiversity conservation. Taking Hani wetland in Jilin province as the research object, we integrated the application of Sentinel-1 radar and Sentinel-2 multispectral images, fully exploited the potential of Sentinel-1 multi-polarization band features and Sentinel-2 red edge index for forest swamp remote sensing identification, and applied the random forest method to realize the extraction of forest swamp distribution information of Hani wetland. The results show that when the optimal number of decision trees for forest swamp information extraction is 1200, the fusion of Sentinel-1VV and VH backscattering coefficient radar band features and Sentinel-2 red-edge band features can significantly improve the extraction accuracy of forest swamp distribution information, and the overall accuracy and Kappa coefficient of forest swamp information extraction in protected areas are as high as 89% and 0.85, respectively. The overall accuracy and Kappa coefficient of forest swamp information extraction in the protected area were 89% and 0.85, respectively. The landscape types of Hani Wetlands of International Importance are diversified, with natural wetlands, artificial wetlands and non-wetland landscape types co-existing. Among the natural wetland types, the forest swamp has the largest area of 27.1 km2, accounting for 11.2% of the total area of the reserve; the river has the smallest area of 0.7 km2, accounting for 0.3% of the total area of the reserve. The forest swamp extraction method provides data support for the sustainable management of Hani wetlands and case guidance for forest swamp mapping in other regions.
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Romero López, Roberto, Javier Molina Salazar, Alivid Coromoto Matheus Marin, and Luis Asunción Pérez Domínguez. "Model of Skills and Capabilities of the Logistics Administrator." In Handbook of Research on Industrial Applications for Improved Supply Chain Performance. IGI Global, 2020. http://dx.doi.org/10.4018/978-1-7998-0202-0.ch007.

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This chapter designs a model of the skills and capabilities required of a logistics administrator. The design of the theoretical model of these skills was carried out based on six skills: management in the supply chain, information technologies, quantitative methods, finance, legislation, and soft skills. Its validation was made through the judgment of experts in the area of the supply and logistics chain. The result obtained was a Kappa value of 0.715, a good value. To validate the reliability of the measurement instrument, it was applied to 20 people working in the logistics area. The Cronbach alpha coefficient was used, obtaining a value of 0.928, which allows the reliability of the instrument to be considered excellent.
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Conference papers on the topic "Kappa coefficient"

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Vieira, Susana M., Uzay Kaymak, and Joao M. C. Sousa. "Cohen's kappa coefficient as a performance measure for feature selection." In 2010 IEEE International Conference on Fuzzy Systems (FUZZ-IEEE). IEEE, 2010. http://dx.doi.org/10.1109/fuzzy.2010.5584447.

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Schäfer, Christian, and Owe Philipsen. "Lattice computation of the transport coefficient kappa in pure Yang-Mills theory." In 31st International Symposium on Lattice Field Theory LATTICE 2013. Sissa Medialab, 2014. http://dx.doi.org/10.22323/1.187.0177.

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DE OLIVEIRA, MARIO A., NELCILENO V. S. ARAUJO, DANIEL J. INMAN, and JOZUE VIEIRA FILHO. "A New Strategy for Damage Identification in SHM Systems by Exploring Kappa Coefficient." In Structural Health Monitoring 2017. DEStech Publications, Inc., 2017. http://dx.doi.org/10.12783/shm2017/13947.

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Javed, Salman, Farhan Javed, and Samsher. "Effect of Boat Tail Profile on Drag Coefficient of a Sedan Using CFD." In ASME 2017 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/imece2017-72653.

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An appendage is a boat tail which is installed at the rear section of the passenger car. An inflatable appendage has been developed to reduce the aerodynamic drag experienced by passenger cars. It can be inflated when driving under high-speed conditions and deflated while parking. In this study, an appendage is designed to maintain the streamlined rear body configuration and reduce flow separation. The profile of this aerodynamic device is based on several mathematical curves such as kappa curve, lame curve, catenary curve and aerofoil curve. Four types of boat tailing devices with different l
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Mohammadyari, Fatemeh, Mir Mehrdad Mirsanjari, Jūratė Sužiedelytė Visockienė, and Ardavan Zarandian. "Evaluation of Change in Land Usage and Land Cover in Karaj, Iran." In 11th International Conference “Environmental Engineering”. VGTU Technika, 2020. http://dx.doi.org/10.3846/enviro.2020.649.

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In this study, classification results were derived from remote sensing data and the Support Vector Machine (SVM) algorithm used in this process, which classifies Landsat land-cover images. The accuracy of image classifications was evaluated by calculation of the Kappa coefficient. The area of study is Karaj, the capital of Alborz province, in north-central Iran. It is situated in the foothills of the Alborz Mountains and occupies a fertile agricultural plain. Landsat data used in the classification of land cover were collected from USGS websites, and multi-temporal images from the data were ge
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Fonseca, Gabriel Barbosa, Zenilton K. G. Patrocínio Jr, Guillaume Gravier, and Silvio Jamil F. Guimarães. "Multimodal person discovery using label propagation over speaking faces graphs." In XXXII Conference on Graphics, Patterns and Images. Sociedade Brasileira de Computação - SBC, 2019. http://dx.doi.org/10.5753/sibgrapi.est.2019.8312.

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The indexing of large datasets is a task of great importance, since it directly impacts on the quality of information that can be retrieved from these sets. Unfortunately, some datasets are growing in size so fast that manually indexing becomes unfeasible. Automatic indexing techniques can be applied to overcome this issue, and in this study, a unsupervised technique for multimodal person discovery is proposed, which consists in detecting persons that are appearing and speaking simultaneously on a video and associating names to them. To achieve that, the data is modeled as a graph of speaking-
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Davison, Craig R., and Jeff W. Bird. "Review of Metrics and Assignment of Confidence Intervals for Health Management of Gas Turbine Engines." In ASME Turbo Expo 2008: Power for Land, Sea, and Air. ASMEDC, 2008. http://dx.doi.org/10.1115/gt2008-50849.

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The development and evaluation of new diagnostic systems requires statistically-based methods to measure performance. Various metrics are in use by developers and users of diagnostic systems. Current metrics practices are reviewed, including receiver operating characteristics, confusion matrices, Kappa coefficients and various entropy techniques. A set of metrics is then proposed for assessment of diverse gas path diagnostic systems. The use of bootstrap statistics to compare metric results is developed, and demonstrated for a set of hypothetical data sets with a range of relevant characterist
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Vieira, Daniella Serafin Couto, Laura Otto Walter, Ana Carolina Rabello de Moraes, João Péricles da Silva Jr, and Maria Cláudia Santos Silva. "CROSS-SECTIONAL ANALYSIS OF CLINICAL AND MORPHOLOGICAL FACTORS OF BREAST CANCER IMMUNOPHENOTYPES: A COMPARATIVE STUDY OF TWO DIFFERENT METHODOLOGIES OVER A 24‑YEAR HISTORICAL SERIES." In Scientifc papers of XXIII Brazilian Breast Congress - 2021. Mastology, 2021. http://dx.doi.org/10.29289/259453942021v31s1043.

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Introduction: Breast cancer (BC) is the most incident form of cancer in women worldwide. The widespread use of breast screening programs, as well advances in molecular biology, and new drugs in chemotherapy have contributed to the recent survival rate improvement in high income countries. Furthermore, the study of cancer genome led to the elucidation of the intrinsic subtypes of invasive breast cancer (IBC), consequently, the success rate of targeted therapies improved the outcome in patients. However, considering that immunohistochemistry (IHC) is one of the main methods to determine the prof
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