ML for software engineers ft. Gideon Mendels of Comet ML
Nov 17, 2023
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Gideon Mendels, Co-founder and CEO of Comet ML, discusses the intersection of machine learning and software engineering. Topics include model performance evaluation, monitoring ML models in production, basics of machine learning for software engineers, and building an effective machine learning team.
Model drift is often used as a proxy for evaluating model performance in production, but definitive evaluation requires accessing data from the product or using proxy metrics to test model predictions.
Software engineers working with machine learning teams should have a solid understanding of model evaluation, including the distinction between offline and online metrics, to prevent overfitting and ensure meaningful conversations.
Deep dives
The role of CometML in managing the process of developing machine learning models
CometML, a company founded by Gideon Mendels, assists machine learning teams in building and managing models. They provide a research-driven approach that helps teams track data sets, conduct experiments, and monitor model performance in production. Offline and online metrics play a crucial role in evaluating model performance. While offline metrics like accuracy and recall are measured during training, online metrics, such as model drift, become necessary in production when ground truth data is unavailable. CometML aims to bridge the gap between software engineering and data science by offering a comprehensive platform for managing machine learning projects.
Challenges in evaluating model performance and addressing potential issues in production
Evaluating model performance becomes more complex in production due to the lack of ground truth data. Offline metrics like accuracy during training don't translate to model performance in real-world scenarios. Model drift, which examines the distribution of input features over time, is often used as a proxy for performance. However, definitive evaluation requires accessing data from the product or using proxy metrics to test model predictions. The unpredictability and non-deterministic nature of machine learning models make it challenging to implement perfect performance monitoring systems. Addressing these challenges often involves human intervention, user reports, and rigorous testing to measure model effectiveness.
The importance of understanding model evaluation in machine learning
When working with machine learning teams, it is valuable for software engineers to have a solid understanding of model evaluation. While complex mathematics may not be necessary, a grasp of supervised and unsupervised learning, core algorithms, and the distinction between offline and online metrics is crucial. Offline metrics, like those used during training, may not accurately reflect model performance in production. This understanding helps prevent overfitting and the assumption that offline performance translates directly to real-world success. By aligning evaluation metrics with business goals and user needs, software engineers can have more meaningful conversations with machine learning teams.
The importance of aligning business needs with feasible machine learning solutions
Initiating machine learning capabilities within an organization requires aligning what is feasible with what the business needs. Businesses must avoid proposing machine learning projects that may not be practically viable, as well as data science teams pursuing projects that may not align with the business's goals. Having a team that can bridge this gap between feasibility and relevance becomes essential. By hiring data scientists who can map business needs to feasible machine learning problems, organizations can establish a solid foundation for integrating machine learning into their products and processes.
In this episode, Rob explores the fascinating crossroads of machine learning and software engineering with Gideon Mendels, the co-founder and CEO of Comet ML.
Gideon navigates the often ambiguous world of training ML models, focusing on building a common language between software engineers and data science teams.
Gain valuable insights into fostering mutual understanding between these two disciplines and aligning the possibilities of ML with organizational needs in this thought-provoking episode.
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