STEM careers in academia and industry
The purpose of this series is to create a platform for the participants to explore exciting topics in STEM and the career prospects around each topic, such as algorithms, artificial intelligence, big data and analytics, complex networks, cyber security, engineering, machine learning, and operations research. Each webinar will be led by an expert in the field. We are hoping this series will give our participants a better understanding of the topic under discussion, the study paths that can lead to them, the key skills that are needed, and the opportunities and challenges around this topic.
Speaker: Dr. Simon Rogers (School of Computing Science, University of Glasgow)
Title: Computing Spectral Similarities using document embeddings
Abstract: Comparing measured spectra is a key step in most untargeted metabolomics analysis pathways. For many years, cosine similarity between spectra has been the method of choice. In this talk, I will present some of the challenges of working with metabolomics data, with particular attention to the analysis of fragmentation spectra. I will then present some work on the use of learnt embeddings (using word2vec approaches that are popular in machine learning) to improve similarity computations. I will describe how fragment spectra, treated as documents, can be projected into an embedded space in which similarities can be computed. The method is validated with a series of experiments, in which it demonstrates improved performance over the traditional cosine similarity.Title
Date: 26 May 2020
Time: 14:00 BST (GMT+1)
Speaker: Professor Christopher Johnson (Head of Computing Science, University of Glasgow)
Bio: Chris Johnson develops new techniques to support the development of complex safety and security critical systems. Over the last ten years, he has helped to author guidelines for the investigation of incidents and accidents across both the European aviation and railway industries. He has worked with members of the European Space Agency and with NASA on the software engineering of future space missions. He has also worked on security concerns with global navigation satellite systems. His team have also worked with various agencies around the world to develop simulations of mass evacuations following terrorist attacks and natural disasters. He is co-chair of the scientific advisory board for the €2 billion SESAR programme for the modernisation of European Air Traffic Management.