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Xie S, Ogden RT. Functional support vector machine. Biostatistics 2024:kxae007. [PMID: 38476094 DOI: 10.1093/biostatistics/kxae007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2023] [Revised: 12/26/2023] [Accepted: 02/13/2024] [Indexed: 03/14/2024] Open
Abstract
Linear and generalized linear scalar-on-function modeling have been commonly used to understand the relationship between a scalar response variable (e.g. continuous, binary outcomes) and functional predictors. Such techniques are sensitive to model misspecification when the relationship between the response variable and the functional predictors is complex. On the other hand, support vector machines (SVMs) are among the most robust prediction models but do not take account of the high correlations between repeated measurements and cannot be used for irregular data. In this work, we propose a novel method to integrate functional principal component analysis with SVM techniques for classification and regression to account for the continuous nature of functional data and the nonlinear relationship between the scalar response variable and the functional predictors. We demonstrate the performance of our method through extensive simulation experiments and two real data applications: the classification of alcoholics using electroencephalography signals and the prediction of glucobrassicin concentration using near-infrared reflectance spectroscopy. Our methods especially have more advantages when the measurement errors in functional predictors are relatively large.
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Affiliation(s)
- Shanghong Xie
- School of Statistics, Southwestern University of Finance and Economics, Chengdu, China
- Department of Biostatistics, Columbia University, New York, NY, United States
| | - R Todd Ogden
- Department of Biostatistics, Columbia University, New York, NY, United States
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Anjos IVD, Ali M, Mora-Poblete F, Araujo KL, Gilio TAS, Neves LG. Application of Near-Infrared Reflectance Spectroscopy for Predicting Damage Severity in a Diverse Panel of Tectona grandis Caused by Ceratocystis fimbriata. PLANTS (BASEL, SWITZERLAND) 2023; 12:2734. [PMID: 37514348 PMCID: PMC10386596 DOI: 10.3390/plants12142734] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/02/2023] [Revised: 07/04/2023] [Accepted: 07/21/2023] [Indexed: 07/30/2023]
Abstract
Tectona grandis Linn., also known as teak, is a highly valued species with adaptability to a wide range of climatic conditions and high tolerance to soil variations, making it an attractive option for both commercial and conservation purposes. In this sense, the classification of cultivated teak genotypes is crucial for both breeding programs and conservation efforts. This study examined the relationship between traits related to damage in the stem of teak plants caused by Ceratocystis fimbriata (a soil-borne pathogen that negatively impacts the productivity of teak plantations) and the spectral reflectance of 110 diverse clones, using near-infrared spectroscopy (NIRS) data and partial least squares regression (PLSR) analysis. Cross-validation models had R2 = 0.894 (ratio of standard error of prediction to standard deviation: RPD = 3.1), R2 = 0.883 (RPD = 2.7), and R2 = 0.893 (RPD = 2.8) for predicting stem lesion area, lesion length, and severity of infection, respectively. Teak genotypes (clones) can benefit from the creation of a calibration model utilizing NIRS-generated data paired with PLSR, which can effectively screen the magnitude of damage caused by the fungus. Overall, while the study provides valuable information for teak breeding and conservation efforts, a long-term perspective would be essential to evaluate the sustainability of teak genotypes over various growth stages and under continuous pathogen pressure.
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Affiliation(s)
- Isabela Vera Dos Anjos
- Doctoral Program in Biotechnology and Biodiversity, Pro-Midwest Network, Cáceres 78210-778, Brazil
| | - Mohsin Ali
- Institute of Biological Sciences, University of Talca, Talca 3460000, Chile
| | | | - Kelly Lana Araujo
- Doctoral Program in Biotechnology and Biodiversity, Pro-Midwest Network, Cáceres 78210-778, Brazil
| | - Thiago Alexandre Santana Gilio
- Doctoral Program in Biotechnology and Biodiversity, Pro-Midwest Network, Cáceres 78210-778, Brazil
- Institute of Agricultural and Environmental Sciences, Federal University of Mato Grosso, Sinop 78550-728, Brazil
| | - Leonarda Grillo Neves
- Doctoral Program in Biotechnology and Biodiversity, Pro-Midwest Network, Cáceres 78210-778, Brazil
- Faculty of Agricultural and Biological Sciences, State University of Mato Grosso, Cáceres 78210-778, Brazil
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Gasmi A, Gasmi Benahmed A, Shanaida M, Chirumbolo S, Menzel A, Anzar W, Arshad M, Cruz-Martins N, Lysiuk R, Beley N, Oliinyk P, Shanaida V, Denys A, Peana M, Bjørklund G. Anticancer activity of broccoli, its organosulfur and polyphenolic compounds. Crit Rev Food Sci Nutr 2023:1-19. [PMID: 37129118 DOI: 10.1080/10408398.2023.2195493] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
The use of natural bioactive constituents from various food sources for anticancer purposes has become increasingly popular worldwide. Broccoli (Brassica oleracea var. italica) is on the top of the consumed vegetables by the masses. Its raw matrix contains a plethora of phytochemicals, such as glucosinolates and phenolic compounds, along with rich amounts of vitamins, and minerals. Consumption of broccoli-derived phytochemicals provides strong antioxidant effects, particularly due to its sulforaphane content, while modulating numerous molecules involved in cell cycle regulation, control of apoptosis, and tuning enzyme activity. Thus, the inclusion of broccoli in the daily diet lowers the susceptibility to developing cancers. Numerous studies have underlined the undisputable role of broccoli in the diet as a chemopreventive raw food, owing to the content in sulforaphane, an isothiocyanate produced as a result of hydrolysis of precursor glucosinolates called glucoraphanin. This review will provide evidence supporting the specific role of fresh florets and sprouts of broccoli and its key bioactive constituents in the prevention and treatment of different cancers; a number of studies carried out in the in vitro and in vivo conditions as well as clinical trials were analyzed.
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Affiliation(s)
- Amin Gasmi
- Société Francophone de Nutrithérapie et de Nutrigénétique Appliquée, Villeurbanne, France
- International Congress of Nutritional Sciences, Casablanca, Morocco
- Société Marocaine de Micronutrition et de Nutrigénétique Appliquée, Casablanca, Morocco
| | | | - Mariia Shanaida
- I. Horbachevsky Ternopil National Medical University, Ternopil, Ukraine
| | - Salvatore Chirumbolo
- Department of Neurosciences, Biomedicine and Movement Sciences, University of Verona, Verona, Italy
- CONEM Scientific Secretary, Verona, Italy
| | | | - Wajiha Anzar
- Dow University of Health Sciences, Karachi, Pakistan
| | - Mehreen Arshad
- National University of Sciences and Technology, Islamabad, Pakistan
| | - Natália Cruz-Martins
- Faculty of Medicine, University of Porto, Porto, Portugal
- Institute for Research and Innovation in Health (i3S), University of Porto, Porto, Portugal
- Institute of Research and Advanced Training in Health Sciences and Technologies (CESPU), Rua Central de Gandra, Gandra PRD, Portugal
- TOXRUN - Toxicology Research Unit, University Institute of Health Sciences, CESPU, CRL, Gandra, Portugal
| | - Roman Lysiuk
- Danylo Halytsky Lviv National Medical University, Lviv, Ukraine
- CONEM Ukraine Life Science Research Group, Danylo Halytsky Lviv National Medical University, Lviv, Ukraine
| | - Nataliya Beley
- I. Horbachevsky Ternopil National Medical University, Ternopil, Ukraine
| | - Petro Oliinyk
- Danylo Halytsky Lviv National Medical University, Lviv, Ukraine
- CONEM Ukraine Life Science Research Group, Danylo Halytsky Lviv National Medical University, Lviv, Ukraine
| | - Volodymyr Shanaida
- Design of Machine Tools, Instruments and Machines Department, Ternopil Ivan Puluj National Technical University, Ternopil, Ukraine
| | | | - Massimiliano Peana
- Department of Chemical, Physical, Mathematical and Natural Sciences, University of Sassari, Sassari, Italy
| | - Geir Bjørklund
- Council for Nutritional and Environmental Medicine (CONEM), Mo i Rana, Norway
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