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We are analyzing https://link.springer.com/article/10.1007/s11306-016-1030-9.

Title:
Non-targeted UHPLC-MS metabolomic data processing methods: a comparative investigation of normalisation, missing value imputation, transformation and scaling | Metabolomics
Description:
Introduction The generic metabolomics data processing workflow is constructed with a serial set of processes including peak picking, quality assurance, normalisation, missing value imputation, transformation and scaling. The combination of these processes should present the experimental data in an appropriate structure so to identify the biological changes in a valid and robust manner. Objectives Currently, different researchers apply different data processing methods and no assessment of the permutations applied to UHPLC-MS datasets has been published. Here we wish to define the most appropriate data processing workflow. Methods We assess the influence of normalisation, missing value imputation, transformation and scaling methods on univariate and multivariate analysis of UHPLC-MS datasets acquired for different mammalian samples. Results Our studies have shown that once data are filtered, missing values are not correlated with m/z, retention time or response. Following an exhaustive evaluation, we recommend PQN normalisation with no missing value imputation and no transformation or scaling for univariate analysis. For PCA we recommend applying PQN normalisation with Random Forest missing value imputation, glog transformation and no scaling method. For PLS-DA we recommend PQN normalisation, KNN as the missing value imputation method, generalised logarithm transformation and no scaling. These recommendations are based on searching for the biologically important metabolite features independent of their measured abundance. Conclusion The appropriate choice of normalisation, missing value imputation, transformation and scaling methods differs depending on the data analysis method and the choice of method is essential to maximise the biological derivations from UHPLC-MS datasets.
Website Age:
28 years and 1 months (reg. 1997-05-29).

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Keywords {🔍}

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Topics {✒️}

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Schema {🗺️}

WebPage:
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         headline:Non-targeted UHPLC-MS metabolomic data processing methods: a comparative investigation of normalisation, missing value imputation, transformation and scaling
         description:The generic metabolomics data processing workflow is constructed with a serial set of processes including peak picking, quality assurance, normalisation, missing value imputation, transformation and scaling. The combination of these processes should present the experimental data in an appropriate structure so to identify the biological changes in a valid and robust manner. Currently, different researchers apply different data processing methods and no assessment of the permutations applied to UHPLC-MS datasets has been published. Here we wish to define the most appropriate data processing workflow. We assess the influence of normalisation, missing value imputation, transformation and scaling methods on univariate and multivariate analysis of UHPLC-MS datasets acquired for different mammalian samples. Our studies have shown that once data are filtered, missing values are not correlated with m/z, retention time or response. Following an exhaustive evaluation, we recommend PQN normalisation with no missing value imputation and no transformation or scaling for univariate analysis. For PCA we recommend applying PQN normalisation with Random Forest missing value imputation, glog transformation and no scaling method. For PLS-DA we recommend PQN normalisation, KNN as the missing value imputation method, generalised logarithm transformation and no scaling. These recommendations are based on searching for the biologically important metabolite features independent of their measured abundance. The appropriate choice of normalisation, missing value imputation, transformation and scaling methods differs depending on the data analysis method and the choice of method is essential to maximise the biological derivations from UHPLC-MS datasets.
         datePublished:2016-04-15T00:00:00Z
         dateModified:2016-04-15T00:00:00Z
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            Metabolomics
            Random forest
            KNN
            PQN normalisation
            Glog transformation
            Biochemistry
            general
            Molecular Medicine
            Cell Biology
            Developmental Biology
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                        name:School of Biosciences, University of Birmingham, Birmingham, UK
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                        type:PostalAddress
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                     name:University of Birmingham
                     address:
                        name:Phenome Centre Birmingham, University of Birmingham, Birmingham, UK
                        type:PostalAddress
                     type:Organization
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      headline:Non-targeted UHPLC-MS metabolomic data processing methods: a comparative investigation of normalisation, missing value imputation, transformation and scaling
      description:The generic metabolomics data processing workflow is constructed with a serial set of processes including peak picking, quality assurance, normalisation, missing value imputation, transformation and scaling. The combination of these processes should present the experimental data in an appropriate structure so to identify the biological changes in a valid and robust manner. Currently, different researchers apply different data processing methods and no assessment of the permutations applied to UHPLC-MS datasets has been published. Here we wish to define the most appropriate data processing workflow. We assess the influence of normalisation, missing value imputation, transformation and scaling methods on univariate and multivariate analysis of UHPLC-MS datasets acquired for different mammalian samples. Our studies have shown that once data are filtered, missing values are not correlated with m/z, retention time or response. Following an exhaustive evaluation, we recommend PQN normalisation with no missing value imputation and no transformation or scaling for univariate analysis. For PCA we recommend applying PQN normalisation with Random Forest missing value imputation, glog transformation and no scaling method. For PLS-DA we recommend PQN normalisation, KNN as the missing value imputation method, generalised logarithm transformation and no scaling. These recommendations are based on searching for the biologically important metabolite features independent of their measured abundance. The appropriate choice of normalisation, missing value imputation, transformation and scaling methods differs depending on the data analysis method and the choice of method is essential to maximise the biological derivations from UHPLC-MS datasets.
      datePublished:2016-04-15T00:00:00Z
      dateModified:2016-04-15T00:00:00Z
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      pageEnd:14
      license:http://creativecommons.org/licenses/by/4.0/
      sameAs:https://doi.org/10.1007/s11306-016-1030-9
      keywords:
         UHPLC-MS
         Metabolomics
         Random forest
         KNN
         PQN normalisation
         Glog transformation
         Biochemistry
         general
         Molecular Medicine
         Cell Biology
         Developmental Biology
         Biomedicine
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                     type:PostalAddress
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                  address:
                     name:School of Biosciences, University of Birmingham, Birmingham, UK
                     type:PostalAddress
                  type:Organization
                  name:University of Birmingham
                  address:
                     name:NERC Biomolecular Analysis Facility—Metabolomics Node (NBAF-B), University of Birmingham, Birmingham, UK
                     type:PostalAddress
                  type:Organization
                  name:University of Birmingham
                  address:
                     name:Phenome Centre Birmingham, University of Birmingham, Birmingham, UK
                     type:PostalAddress
                  type:Organization
                  name:University of Birmingham
                  address:
                     name:Institute of Metabolism and Systems Research, University of Birmingham, Birmingham, UK
                     type:PostalAddress
                  type:Organization
            type:Person
            name:Warwick B. Dunn
            affiliation:
                  name:University of Birmingham
                  address:
                     name:School of Biosciences, University of Birmingham, Birmingham, UK
                     type:PostalAddress
                  type:Organization
                  name:University of Birmingham
                  address:
                     name:MRC-ARUK Centre for Musculoskeletal Ageing Research, University of Birmingham, Birmingham, UK
                     type:PostalAddress
                  type:Organization
                  name:University of Birmingham
                  address:
                     name:Phenome Centre Birmingham, University of Birmingham, Birmingham, UK
                     type:PostalAddress
                  type:Organization
                  name:University of Birmingham
                  address:
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         name:School of Biosciences, University of Birmingham, Birmingham, UK
         type:PostalAddress
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         name:MRC-ARUK Centre for Musculoskeletal Ageing Research, University of Birmingham, Birmingham, UK
         type:PostalAddress
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      address:
         name:Phenome Centre Birmingham, University of Birmingham, Birmingham, UK
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            address:
               name:School of Biosciences, University of Birmingham, Birmingham, UK
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      name:Jasper Engel
      affiliation:
            name:University of Birmingham
            address:
               name:School of Biosciences, University of Birmingham, Birmingham, UK
               type:PostalAddress
            type:Organization
            name:University of Birmingham
            address:
               name:NERC Biomolecular Analysis Facility—Metabolomics Node (NBAF-B), University of Birmingham, Birmingham, UK
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            name:University of Birmingham
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               name:School of Biosciences, University of Birmingham, Birmingham, UK
               type:PostalAddress
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            name:University of Birmingham
            address:
               name:School of Biosciences, University of Birmingham, Birmingham, UK
               type:PostalAddress
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            name:University of Birmingham
            address:
               name:School of Biosciences, University of Birmingham, Birmingham, UK
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      name:Ulf Sommer
      affiliation:
            name:University of Birmingham
            address:
               name:School of Biosciences, University of Birmingham, Birmingham, UK
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            type:Organization
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      affiliation:
            name:University of Birmingham
            address:
               name:School of Biosciences, University of Birmingham, Birmingham, UK
               type:PostalAddress
            type:Organization
            name:University of Birmingham
            address:
               name:NERC Biomolecular Analysis Facility—Metabolomics Node (NBAF-B), University of Birmingham, Birmingham, UK
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               type:PostalAddress
            type:Organization
            name:University of Birmingham
            address:
               name:Institute of Metabolism and Systems Research, University of Birmingham, Birmingham, UK
               type:PostalAddress
            type:Organization
      name:Warwick B. Dunn
      affiliation:
            name:University of Birmingham
            address:
               name:School of Biosciences, University of Birmingham, Birmingham, UK
               type:PostalAddress
            type:Organization
            name:University of Birmingham
            address:
               name:MRC-ARUK Centre for Musculoskeletal Ageing Research, University of Birmingham, Birmingham, UK
               type:PostalAddress
            type:Organization
            name:University of Birmingham
            address:
               name:Phenome Centre Birmingham, University of Birmingham, Birmingham, UK
               type:PostalAddress
            type:Organization
            name:University of Birmingham
            address:
               name:Institute of Metabolism and Systems Research, University of Birmingham, Birmingham, UK
               type:PostalAddress
            type:Organization
      email:[email protected]
PostalAddress:
      name:School of Biosciences, University of Birmingham, Birmingham, UK
      name:MRC-ARUK Centre for Musculoskeletal Ageing Research, University of Birmingham, Birmingham, UK
      name:School of Biosciences, University of Birmingham, Birmingham, UK
      name:NERC Biomolecular Analysis Facility—Metabolomics Node (NBAF-B), University of Birmingham, Birmingham, UK
      name:School of Biosciences, University of Birmingham, Birmingham, UK
      name:School of Biosciences, University of Birmingham, Birmingham, UK
      name:School of Biosciences, University of Birmingham, Birmingham, UK
      name:School of Biosciences, University of Birmingham, Birmingham, UK
      name:NERC Biomolecular Analysis Facility—Metabolomics Node (NBAF-B), University of Birmingham, Birmingham, UK
      name:School of Biosciences, University of Birmingham, Birmingham, UK
      name:NERC Biomolecular Analysis Facility—Metabolomics Node (NBAF-B), University of Birmingham, Birmingham, UK
      name:Phenome Centre Birmingham, University of Birmingham, Birmingham, UK
      name:Institute of Metabolism and Systems Research, University of Birmingham, Birmingham, UK
      name:School of Biosciences, University of Birmingham, Birmingham, UK
      name:MRC-ARUK Centre for Musculoskeletal Ageing Research, University of Birmingham, Birmingham, UK
      name:Phenome Centre Birmingham, University of Birmingham, Birmingham, UK
      name:Institute of Metabolism and Systems Research, University of Birmingham, Birmingham, UK

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