1 code implementation • 1 Feb 2024 • Nan Jiang, Md Nasim, Yexiang Xue
We propose Vertical Symbolic Regression using Deep Policy Gradient (VSR-DPG) and demonstrate that VSR-DPG can recover ground-truth equations involving multiple input variables, significantly beyond both deep reinforcement learning-based approaches and previous VSR variants.
no code implementations • 19 Dec 2023 • Nan Jiang, Md Nasim, Yexiang Xue
The first few steps in vertical discovery are significantly cheaper than the horizontal path, as their search is in reduced hypothesis spaces involving a small set of variables.
no code implementations • 13 Sep 2023 • Md Nasim, Yexiang Xue
This decomposition enables efficient learning when the source of the updates consists of gradually changing terms across large areas (sparse in the frequency domain) in addition to a few rapid updates concentrated in a small set of "interfacial" regions (sparse in the value domain).
no code implementations • 13 Sep 2023 • Md Nasim, Anter El-Azab, Xinghang Zhang, Yexiang Xue
Phase-Field-Lab combines (i) a streamlined annotation tool which reduces the annotation time (by ~50-75%), while increasing annotation accuracy compared to baseline; (ii) an end-to-end neural model which automatically learns phase field models from data by embedding phase field simulation and existing domain knowledge into learning; and (iii) novel interfaces and visualizations to integrate our platform into the scientific discovery cycle of domain scientists.