RT Journal Article T1 Applications of Machine Learning in Human Microbiome Studies: A Review on Feature Selection, Biomarker Identification, Disease Prediction and Treatment. A1 Marcos-Zambrano, Laura Judith A1 Karaduzovic-Hadziabdic, Kanita A1 Loncar Turukalo, Tatjana A1 Przymus, Piotr A1 Trajkovik, Vladimir A1 Aasmets, Oliver A1 Berland, Magali A1 Gruca, Aleksandra A1 Hasic, Jasminka A1 Hron, Karel A1 Klammsteiner, Thomas A1 Kolev, Mikhail A1 Lahti, Leo A1 Lopes, Marta B A1 Moreno, Victor A1 Naskinova, Irina A1 Org, Elin A1 Paciência, Inês A1 Papoutsoglou, Georgios A1 Shigdel, Rajesh A1 Stres, Blaz A1 Vilne, Baiba A1 Yousef, Malik A1 Zdravevski, Eftim A1 Tsamardinos, Ioannis A1 Carrillo de Santa Pau, Enrique A1 Claesson, Marcus J A1 Moreno-Indias, Isabel A1 Truu, Jaak K1 biomarker identification K1 disease prediction K1 feature selection K1 machine learning K1 microbiome AB The number of microbiome-related studies has notably increased the availability of data on human microbiome composition and function. These studies provide the essential material to deeply explore host-microbiome associations and their relation to the development and progression of various complex diseases. Improved data-analytical tools are needed to exploit all information from these biological datasets, taking into account the peculiarities of microbiome data, i.e., compositional, heterogeneous and sparse nature of these datasets. The possibility of predicting host-phenotypes based on taxonomy-informed feature selection to establish an association between microbiome and predict disease states is beneficial for personalized medicine. In this regard, machine learning (ML) provides new insights into the development of models that can be used to predict outputs, such as classification and prediction in microbiology, infer host phenotypes to predict diseases and use microbial communities to stratify patients by their characterization of state-specific microbial signatures. Here we review the state-of-the-art ML methods and respective software applied in human microbiome studies, performed as part of the COST Action ML4Microbiome activities. This scoping review focuses on the application of ML in microbiome studies related to association and clinical use for diagnostics, prognostics, and therapeutics. Although the data presented here is more related to the bacterial community, many algorithms could be applied in general, regardless of the feature type. This literature and software review covering this broad topic is aligned with the scoping review methodology. The manual identification of data sources has been complemented with: (1) automated publication search through digital libraries of the three major publishers using natural language processing (NLP) Toolkit, and (2) an automated identification of relevant software repositories on GitHub and ranking of the related research papers relying on learning to rank approach. SN 1664-302X YR 2021 FD 2021-02-19 LK http://hdl.handle.net/10668/17365 UL http://hdl.handle.net/10668/17365 LA en DS RISalud RD Apr 5, 2025