Posts on machine learning, proteomics, and software projects.https://www.nielsvandervelden.com/https://www.nielsvandervelden.com/blog/protein-encoding-for-deep-learning-models/https://www.nielsvandervelden.com/blog/protein-encoding-for-deep-learning-models/In order to use protein sequences as inputs for deep learning models they need to be transformed into numerical descriptors. This notebook highlights four different feature encodings for protein sequences.Wed, 15 Jun 2022 00:00:00 GMThttps://www.nielsvandervelden.com/blog/predicting-titanic-passenger-survival-using-tidymodels/https://www.nielsvandervelden.com/blog/predicting-titanic-passenger-survival-using-tidymodels/How I built and tuned a machine-learning model in R using tidymodels, engineered additional features, and used Optuna via Python for tuning.Wed, 23 Feb 2022 00:00:00 GMThttps://www.nielsvandervelden.com/blog/tune-tidymodels-using-the-optuna-python-library/https://www.nielsvandervelden.com/blog/tune-tidymodels-using-the-optuna-python-library/A comparison of direct grid search in R versus tuning with Optuna through reticulate, applied to tidymodels workflows.Wed, 16 Feb 2022 00:00:00 GMThttps://www.nielsvandervelden.com/blog/optuna-samplers/https://www.nielsvandervelden.com/blog/optuna-samplers/An interactive explanation of Optuna samplers and why they are effective for hyperparameter optimization in ML workflows.Mon, 07 Feb 2022 00:00:00 GMThttps://www.nielsvandervelden.com/blog/editable-datatables-in-r-shiny-using-sql/https://www.nielsvandervelden.com/blog/editable-datatables-in-r-shiny-using-sql/A tutorial showing Add/Edit/Copy/Delete functionality in Shiny DataTables backed by a local SQL database.Wed, 14 Aug 2019 00:00:00 GMT