We use Bayesian optimization as a cost-effective method for solving "black box" function-optimization problems in machine learning by strategically choosing a highly informative set of points to sample.

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Bayesian Approach to Optimizing Black Box Functions

Advances in computational power have lowered the cost for developing machine learning systems and opened new areas of research from neural networks and robotics to resource mining and medical research. Optimizing machine learning functions, however, can be problematic and expensive. Our data scientists use Bayesian optimization to cut the computational cost of finding optimized machine learning solutions by strategically selecting and minimizing the number of required evaluations of the function.


Metron Solutions

DARPA Fundamentals of Design

Metron successfully applied Bayesian optimization in the DARPA Fundamentals of Design program, delivering a measurable improvement in the optimization of an expensive-to-evaluate, black box function. The goal of this high-risk, high-reward research program was to aid in the conceptual design process, discovering nonintuitive and novel designs. To search the control parameter space, rather than applying a traditional slow and expensive grid-search approach which tries all possible combinations of parameters, we used Bayesian optimization, reducing the number of function evaluations by an order of magnitude.

Optimizing Machine Learning Hyperparameters

Training a deep neural network is a computationally rigorous task, and the performance of the trained model is often highly dependent on hyperparameters specified before a training run. These hyperparameters may describe network architecture (e.g., the number of layers in a feed-forward neural network) or the optimization routine (e.g. the learning rate). Given a relatively small budget for training runs, Metron data scientists use Bayesian optimization to methodically choose combinations of hyperparameters, saving computational resources and elevating model performance.

Featured Team Member

Jamie Prezioso, Ph.D.

my role at metron

Machine Learning Expert

my metron Experience

As a research scientist at Metron, I am an innovator who develops principled mathematical approaches to properly characterize and manage uncertainty within complex AI models. Together with my Metron colleagues, I advance the state of the art in Bayesian neural networks and the application of Bayesian optimization to train robust probabilistic models on sparse data.

Metronite since

2018

Division

Advanced Data Analytics (ADA)

Featured Team Member

Metron Careers

Decision Support Career Opportunities

Metron hires research scientists with experience developing novel approaches that advance the state of the art in mathematics and artificial intelligence. Our scientists work alongside subject matter experts applying these innovations to new problem domains.

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