Publications by authors named "Raghib Abu-Saris"

Traditional support vector machines (SVMs) are fragile in the presence of outliers; even a single corrupt data point can arbitrarily alter the quality of the approximation. If even a small fraction of columns is corrupted, then classification performance will inevitably deteriorate. This article considers the problem of high-dimensional data classification, where a number of the columns are arbitrarily corrupted.

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Article Synopsis
  • COVID-19 poses a significant global threat, and serological surveys are essential to accurately measure how many individuals have developed antibodies to the virus, revealing the true infection rates in populations.
  • A study conducted between July and October 2020 in Saudi Arabia tested 15,873 serum samples to determine the seroprevalence of SARS-CoV-2, finding an overall rate of 17%, with the Makkah region having the highest rate at 33.3%.
  • The study identified several factors influencing seropositivity, including age, education, and region, while underscoring the need for mass vaccination efforts as most people lacked SARS-CoV-2 specific antibodies, indicating low herd immunity.*
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Introduction Psychological disorders are one of the leading causes of disability globally. Evidence suggests the positive role of physical activity on physical and mental health in various countries. However, a limited number of studies have been done in Saudi Arabia to investigate the association between physical activity and psychological health, especially among women.

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Unlabelled: . Middle East respiratory syndrome coronavirus was first recognized in September 2012 in Saudi Arabia. The clinical presentations of MERS and non-MERS SARI are often similar.

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Since the principal component analysis and its variants are sensitive to outliers that affect their performance and applicability in real world, several variants have been proposed to improve the robustness. However, most of the existing methods are still sensitive to outliers and are unable to select useful features. To overcome the issue of sensitivity of PCA against outliers, in this paper, we introduce two-dimensional outliers-robust principal component analysis (ORPCA) by imposing the joint constraints on the objective function.

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Background: The risk of getting cancer before full life expectancy and mortalities per year are on the rise in Saudi Arabia. Yet, evidence of economic burden of cancer in the country remains largely unknown. In order to provide evidence, we attempted to estimate the economic burden in terms of indirect cost associated with premature cancer deaths among the active or potentially economically active population aged 15-60 years in Saudi Arabia.

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