Search Results for author: Daniel Ratner

Found 9 papers, 2 papers with code

Coincident Learning for Unsupervised Anomaly Detection

no code implementations26 Jan 2023 Ryan Humble, Zhe Zhang, Finn O'Shea, Eric Darve, Daniel Ratner

While complex systems often have a wealth of data, labeled anomalies are typically rare (or even nonexistent) and expensive to acquire.

Time Series Time Series Analysis +1

Multipoint-BAX: A New Approach for Efficiently Tuning Particle Accelerator Emittance via Virtual Objectives

no code implementations10 Sep 2022 Sara A. Miskovich, Willie Neiswanger, William Colocho, Claudio Emma, Jacqueline Garrahan, Timothy Maxwell, Christopher Mayes, Stefano Ermon, Auralee Edelen, Daniel Ratner

Traditional black-box optimizers such as Bayesian optimization are slow and inefficient when dealing with such objectives as they must acquire the full series of measurements, but return only the emittance, with each query.

Bayesian Optimization

CryoAI: Amortized Inference of Poses for Ab Initio Reconstruction of 3D Molecular Volumes from Real Cryo-EM Images

1 code implementation15 Mar 2022 Axel Levy, Frédéric Poitevin, Julien Martel, Youssef Nashed, Ariana Peck, Nina Miolane, Daniel Ratner, Mike Dunne, Gordon Wetzstein

We introduce cryoAI, an ab initio reconstruction algorithm for homogeneous conformations that uses direct gradient-based optimization of particle poses and the electron scattering potential from single-particle cryo-EM data.

Computational Efficiency

Introduction to Machine Learning for Accelerator Physics

no code implementations17 Jun 2020 Daniel Ratner

This pair of CAS lectures gives an introduction for accelerator physics students to the framework and terminology of machine learning (ML).

BIG-bench Machine Learning regression +2

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