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i,j = exp − xi−xj 2 2σ 2 - Build the normalized graph Laplacian matrix: L rw = I − D −1 W, where I is the identity matrix and D = (w i,j ) is a diagonal matrix with d i,i = ∑ j∈V w i,j - Obtain the k ... Note: u i ∈ R N -Apply k-means clustering over the transformed data points defined as y i = u i,1 , u i,2 , . . . , u i,k ∈ R k . - The cluster label C i assigned to each y i by k-means is the same label ...doi:10.3390/sym13061042 fatcat:rnvjclq5vvaxve33iscvf3bmda
probability distribution of the parameters θ and the intercept I of the BLR model, which is proportional to the prior probability of θ and I, and the likelihood P(y θ, I, x) , both of which are known. ... By developing Bayes theorem using the parameters from Equation (2) , and realizing that P(θ, I x) does not actually depend on x, we finally arrive at Equation (3) , where P(θ, I x, y) is the posterior ...doi:10.3390/sym12101581 fatcat:i3wjrfdzmvaphkm25t7fyvj7by
b) constructing a normalized graph Laplacian matrix L rw = I − D −1 W, where I is the identity matrix, and D is a diagonal matrix with values d i,i = j∈V w i,j , (c) getting the eigenvectors associated ... As a very short summary, SC works by (a) building a similarity matrix W = w i,j (we employed the pairwise Gaussian similarity between points with σ = 0.1, which is a typical choice for data in R n ), ( ...doi:10.3390/app10249109 fatcat:3hrp3iozmnagrkvbgznm4b3vum
<b><i>Background:</i></b> Multicentre studies focussing on specific long-term post-COVID-19 symptoms are scarce. <b><i>Objective:</i></b> The aim of this study was to determine the levels of fatigue and dyspnoea, repercussions on daily life activities, and risk factors associated with fatigue or dyspnoea in COVID-19 survivors at long term after hospital discharge. <b><i>Methods:</i></b> Age, gender, height, weight, symptoms at hospitalization, pre-existing medical comorbidity, intensive caredoi:10.1159/000518854 pmid:34569550 pmcid:PMC8678253 fatcat:sji74dsgrnfjzb2b5l5wyk6pzi
more »... t admission, and the presence of cardio-respiratory symptoms developed after severe acute respiratory syndrome coronavirus 2 infection were collected from patients who recovered from COVID-19 at 4 hospitals in Madrid (Spain) from March 1 to May 31, 2020 (first COVID-19 wave). The Functional Impairment Checklist was used for evaluating fatigue/dyspnoea levels and functional limitations. <b><i>Results:</i></b> A total of 1,142 patients (48% women, age: 61, standard deviation [SD]: 17 years) were assessed 7.0 months (SD 0.6) after hospitalization. Fatigue was present in 61% patients, dyspnoea with activity in 55%, and dyspnoea at rest in 23.5%. Only 355 (31.1%) patients did not exhibit fatigue and/or dyspnoea 7 months after hospitalization. Forty-five per cent reported functional limitations with daily living activities. Risk factors associated with fatigue and dyspnoea included female gender, number of pre-existing comorbidities, and number of symptoms at hospitalization. The number of days at hospital was a risk factor just for dyspnoea. <b><i>Conclusions:</i></b> Fatigue and/or dyspnoea were present in 70% of hospitalized COVID-19 survivors 7 months after discharge. In addition, 45% patients exhibited limitations on daily living activities. Being female, higher number of pre-existing medical comorbidities and number of symptoms at hospitalization were risk factors associated to fatigue/dyspnoea in COVID-19 survivors 7 months after hospitalization.
D+i en materia de respuesta a COVID 19 (LONG-COVID-EXP-CM). ... Foundation 0067235 (Denmark) and by a grant associated with the Fondo Europeo De Desarrollo Regional-Recursos REACT-UE del Programa Operativo de Madrid 2014-2020, en la línea de actuación de proyectos de I+ ...doi:10.3390/jcm11020413 pmid:35054108 pmcid:PMC8778106 fatcat:4etvpcyunfhavcw3pwy6zo6ogm