Sökning: "Partial Least Squares Discriminant Analysis PLS-DA"

Visar resultat 1 - 5 av 6 uppsatser innehållade orden Partial Least Squares Discriminant Analysis PLS-DA.

1. 1. Machine learning methods for seasonal allergic rhinitis studies

   Master-uppsats, Linköpings universitet/Statistik och maskininlärning

   Författare :Zijie Feng; [2021]
   Nyckelord :Machine learning; Seasonal allergic rhinitis; Random forest; Partial least squares discriminant analysis; Bootstrap; Cubic smoothing splines; Single-cell RNA sequencing;

   Sammanfattning : Seasonal allergic rhinitis (SAR) is a disease caused by allergens from both environmental and genetic factors. Some researchers have studied the SAR based on traditional genetic methodologies. As technology develops, a new technique called single-cell RNA sequencing (scRNA-seq) is developed, which can generate high-dimension data. LÄS MER

3. 2. Bayes Factors for the Proposition of a Common Source of Amphetamine Seizures.

   Master-uppsats, Linköpings universitet/Statistik och maskininlärning

   Författare :Yash Pawar; [2021]
   Nyckelord :Amphetamine Data; LDA; PLS-DA; NSC; Gaussaianize; pairwise ratios;

   Sammanfattning : This thesis sets out to address the challenges with the comparison of Amphetamine material in determining whether they originate from the same source or different sources using pairwise ratios of peak areas within each chromatogram of material and then modeling the difference between the ratios for each comparison as a basis for evaluation. The evaluation of an existing method that uses these ratios to determine the sum of significant differences between each comparison of material that is provided is done. LÄS MER

4. 3. Multivariat dataanalys för att undersöka skillnader i undervisnings- och bedömningspraxis i kursen kemi 2

   Uppsats för yrkesexamina på avancerad nivå, Linnéuniversitetet/Institutionen för didaktik och lärares praktik (DLP)

   Författare :Daniel Larsson; [2018]
   Nyckelord :Formativ bedömning; Frekvenser av undervisningsmoment; Multivariat dataanalys; Principalkomponentsanalys PCA ; Partial Least Squares Discriminant Analysis PLS-DA ; Kartläggning; Enkätundersökning; Elevupplevelser; Nyckelstrategier för formativ bedömning.;

   Sammanfattning : Trots att det inom forskningsvärlden propageras för formativ bedömning, kan man i dagsläget notera en mycket stor variation gällande införlivandet av, samt effekter av, formativ bedömning i skolor. Metoder för att kartlägga formativ bedömningspraxis fordras för att kunna särskilja på ”god” respektive ”mindre god” formativ bedömningspraxis. LÄS MER

5. 4. "Source characterization of soils contaminated with Polycyclic Aromatic Compounds (PACs) by use of Partial Least Squares Discriminant Analysis (PLS-DA)"

   Magister-uppsats, Örebro universitet/Institutionen för naturvetenskap och teknik

   Författare :Tim Sinioja; [2017]
   Nyckelord :;

   Sammanfattning : Polycyclic aromatic compounds (PACs) are organic compounds that include several sub-groups of toxic, persistent and carcinogenic environmental pollutants consisting of two or more non-substituted or substituted aromatic rings. Due to the complexity of PAC-mixtures found in the environment it can be challenging and time-consuming to track the sources of contamination. LÄS MER

7. 5. Untargeted metabolomics to assess effects of rye diet enriched with plant protein and fermentable fiber on appetite

   Master-uppsats, SLU/Dept. of Food Science

   Författare :Magnus Lindelöf; [2014]
   Nyckelord :rye; dietary fiber; protein; satiety; humans; plasma; metabolomics; untargeted; NMR; speaq; chemometrics;

   Sammanfattning : Rye products are known to more effective decrease different aspects of subjective appetite compared to low fiber wheat bread. Nutritional composition and structural properties, such as dietary fiber components and grain integrity are thought to play roles in the satiating mechanism behind this appetite reduction. LÄS MER