Lewis Tunstall

AI Researcher

Bern, Berne, Switzerland12 yrs 6 mos experience
Most Likely To SwitchHighly Stable

Key Highlights

  • Expert in machine learning and NLP applications.
  • Led development of innovative no-code platforms.
  • Significant contributions to academic and industry research.
Stackforce AI infers this person is a Machine Learning and Data Science expert with a focus on open-source and academic contributions.

Contact

Skills

Core Skills

Machine LearningPythonNlpData SciencePhysicsComputer Vision

Other Skills

Technical WritingResearchPyTorchFlaskDockerJenkinsKubernetesspaCyTeachingTopological Data AnalysisAnomaly DetectionPredictive MaintenanceApache FlinkSoftware DevelopmentLeadership

About

I am a machine learning developer focused on developing open-source tools and recipes for LLM post-training / alignment.

Experience

Hugging face

Machine Learning Engineer

May 2021Present · 4 yrs 11 mos

  • I am a member of the research team, currently focused on building tools and recipes for post-training LLMs.
  • See the links below for some of my previous work at Hugging Face, spanning education to large-scale model evaluation.
Machine LearningPythonTechnical WritingResearchPyTorch

Swisscom

Senior Data Scientist

Jul 2020Dec 2020 · 5 mos · Bern, Berne, Switzerland

  • I was a member of Swisscom's Applied AI and Analytics team, focused on applying NLP to automate internal business processes:
  • Implemented and deployed a multilingual Transformer model (XLM-RoBERTa) to improve the routing accuracy of customer support tickets by >10% and generate a projected savings of >CHF 300k / year.
  • Implemented and deployed a German named entity recognition system to automate the extraction of power-cut events from Swisscom energy provider documents.
  • Established the team's first NLP/ML journal club, aimed at staying up to date with the current state-of-the-art and integrating it into Swisscom's services.
  • Tech stack: PyTorch, HuggingFace Transformers, spaCy, Flask, Docker, Jenkins, Kubernetes
  • I left Swisscom to care for my son during the COVID-19 pandemic.
Machine LearningPythonNLPData SciencePyTorchFlask+3

University of bern

Lecturer

Apr 2020May 2020 · 1 mo · Bern, Berne, Switzerland

  • I developed and taught the graduate course "Practical Machine Learning for Physicists" at the Albert Einstein Centre for Fundamental Physics. The course involved two parts:
  • Part I: An in-depth look at tree-based models such as random forests and gradient boosting.
  • Part II: An introduction to topological data analysis with Mapper and persistent homology.
  • A link to the course website can be found below.
Machine LearningPhysicsTeaching

L2f - learn to forecast

Machine Learning Engineer

Sep 2019May 2020 · 8 mos · Lausanne Metropolitan Area

  • At L2F, I worked at the intersection of the product and research teams:
  • GIOTTO. I led a team of 5 machine learning engineers to design and develop the company’s “no code” deep learning platform for computer vision tasks (https://giotto.ai/)
  • TOPOLOGICAL MACHINE LEARNING. I implemented and evaluated topological algorithms for L2F's open source library giotto-tda to study data where the underlying structure is a non-Euclidean space.
  • Some of my work has been published on Towards Data Science - see the links below!
Machine LearningPythonComputer VisionTopological Data Analysis

Berner fachhochschule bfh

Lecturer

Feb 2019Jul 2020 · 1 yr 5 mos · Greater Bern Area

  • I co-developed and taught a recurring 6-month module on the foundations of data science and machine learning to industrial engineering students. Topics covered include the PyData stack, random forests, clustering, naive Bayes, model performance metrics, and cross-validation.
Machine LearningData ScienceTeachingTechnical Writing

Spoud.io

Lead Data Scientist

Sep 2017Jun 2019 · 1 yr 9 mos

  • SPOUD is a Big Data startup focused on developing a platform that enables enterprises to locate, transport, and curate data assets. I led the company's data science efforts and worked on:
  • ANOMALY DETECTION. Developed and implemented a novel unsupervised algorithm to automate the identification of failing components in a large IT application network. The research behind the algorithm was presented at Applied Machine Learning Days and the Swiss Conference on Data Science (see poster link below).
  • APPLICATION PERFORMANCE MONITORING. Provided our customer's DevOps team with real-time performance metrics by developing and implementing Apache Flink pipelines that apply complex event processing to telemetry streams consisting of over 2,000 events/s.
  • PREDICTIVE MAINTENANCE. Applied random forests and SVMs to identify factors influencing mean time between failure for over 200,000 units of industrial equipment to enable the customer to optimise their maintenance schedule effectively.
Data ScienceMachine LearningAnomaly DetectionPredictive MaintenanceApache Flink

University of bern (official)

Postdoctoral Researcher

Sep 2013Jun 2017 · 3 yrs 9 mos

  • My postdoctoral research was in the domain of theoretical particle physics, where I contributed towards furthering our understanding of:
  • DARK MATTER. The nature of dark matter remains a deep puzzle in physics - we know it exists from astrophysical observations, but have yet to directly observe it interact with nuclear matter in Earthbound experiments. I proposed a novel framework to obtain limits on the mass of dark matter particles through high-precision calculations of quantities in nuclear physics.
  • PHYSICS BEYOND THE STANDARD MODEL. The pressing question facing particle theorists today is: what lies beyond the Standard Model, the most successful theory to date? To help answer this question, I proposed a special class of theories where the Higgs boson emerges from the breaking of conformal symmetry.
  • In addition to research, I was an active member of the Institute where I supervised students and gave a variety of lectures and seminars.
ResearchPhysicsTeaching

University of adelaide

Postdoctoral Researcher

Jan 2012Jan 2013 · 1 yr · Greater Adelaide Area

  • Developed major extension to the physics software package SOFTSUSY which uses an iterative algorithm to calculate the spectrum for a class of subatomic particles under active search at the Large Hadron Collider in CERN
  • Writer of popular science articles
PhysicsSoftware Development

Education

University of Adelaide

Doctor of Philosophy (PhD) — Theoretical and Mathematical Physics

Jan 2009Jan 2013

University of Adelaide

Bachelor of Science (Honours) — Theoretical and Mathematical Physics

Jan 2008Jan 2008

University of Adelaide

Bachelor of Science (BSc) — Theoretical and Mathematical Physics

Jan 2006Jan 2007

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