Benedict W. J. Irwin

Principal ML Engineer

AI/ML and simulations based solutions for drug discovery. I am familiar with a range of conventional ML methods, as well as deep learning, sparse data methods, large datasets, imputation, graph convolution networks, transformers, recurrent networks, generative methods, recommender systems, kernel density methods and distribution matching, Bayesian optimisation, Gaussian processes, and generalised additive models. I have some knowledge of time series modelling, signal processing methods, image based methods. I am mathematically fluent and can comfortably generate new solutions where there is little to no existing literature. This extends to non-machine learning algorithms such as integer programming, trees and data structures. I completed my PhD in the Theory of Condensed Matter (TCM) group at the Cavendish Laboratory at the University of Cambridge. I derived the Atomwise Free Energy Perturbation (AFEP) method to calculate approximate decompositions of the free energy of solvation and binding and have run thousands of molecular dynamics simulations. I am familiar with free energy perturbation, thermodynamic integration various computational chemistry and simulation methods. I am familiar with AWS, AzureML/ADO, high performance computing, parallel algorithms (OpenMP, MPI) and software development in a variety of languages (C, C++, Python, Perl). I have strong mathematical skills and can use various computer algebra systems (Mathematica, Maple, Matlab). I'm generally interested in mathematics, machine learning and artificial intelligence. I have reviewed journal papers for JMLR, JCIM, In Silico Pharmacology, and have made many additions to the OEIS.

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Articles by

Benedict W. J. Irwin

Co-Folding AI
Lead Optimization
AI Drug Discovery

Fine-tuning the OpenFold3 affinity head on a small JAK2 macrocycle dataset

We rebuilt the SandboxAQ affinity head inside ApherisFold and fine-tuned it on 49 JAK2 macrocycles. Architectural changes alone lifted Spearman ranking from 0.418 to 0.60; fine-tuning then pushed validation Pearson from 0.23 to 0.76, mostly by correcting how the model handled inactives.

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Federated Learning
Collaborative Data Ecosystems
Co-Folding AI

A new operational standard for industrial federation

Delivering a state-of-the-art federated co-folding model across five pharma companies in record time

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