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Some thoughts on counts in sequencing studies
Juan José Egozcue1, Jan Graffelman2, M Isabel Ortego1
1Department of Civil and Environmental Engineering, Universitat Politecnica de Catalunya, Barcelona, 08034 Spain.
NAR Genomics and Bioinformatics
|February 12, 2021
Summary
This study addresses the lack of theoretical frameworks for analyzing sequencing count data. It proposes methods considering compositional data and amplification effects for better modeling of sequencing measurements.
Area of Science:
- Bioinformatics
- Statistical Genomics
- Computational Biology
Background:
- Sequencing studies predominantly rely on count-based measurements.
- Existing theoretical frameworks for analyzing such count data are limited.
- The compositional nature of sequencing data presents analytical challenges.
Purpose of the Study:
- To develop theoretical foundations for analyzing sequencing count data.
- To address the compositional characteristics of multinomial probabilities in sequencing.
- To model sequencing data distributions, accounting for amplification biases.
Main Methods:
- Representation of compositional multinomial probabilities in orthogonal coordinates.
- Development of statistical models for sequencing data.
- Incorporation of amplification technique effects into data modeling.
Main Results:
- Provides a theoretical basis for understanding sequencing count data.
- Introduces a coordinate system for analyzing compositional data.
- Offers models that account for technical variations introduced by amplification.
Conclusions:
- The proposed theoretical developments offer a foundation for improved sequencing data analysis.
- Addressing data compositionality and amplification effects is crucial for accurate modeling.
- This work seeds further research into robust statistical methods for high-throughput sequencing.
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