Profils utilisateurs correspondant à "Apratim Dey"

Apratim Dey

Stanford University
Adresse e-mail validée de stanford.edu
Cité 51 fois

Inferring the redshift of more than 150 GRBs with a machine-learning ensemble model

…, V Petrosian, M Bogdan, A Dey… - The Astrophysical …, 2024 - iopscience.iop.org
Gamma-ray bursts (GRBs), due to their high luminosities, are detected up to a redshift of 10,
and thus have the potential to be vital cosmological probes of early processes in the …

Detox: Toxic subspace projection for model editing

R Uppaal, A Dey, Y He, Y Zhong, J Hu - arXiv e-prints, 2024 - ui.adsabs.harvard.edu
Recent alignment algorithms such as direct preference optimization (DPO) have been
developed to improve the safety of large language models (LLMs) by training these models to …

Is model collapse inevitable? breaking the curse of recursion by accumulating real and synthetic data

M Gerstgrasser, R Schaeffer, A Dey, R Rafailov… - arXiv preprint arXiv …, 2024 - arxiv.org
The proliferation of generative models, combined with pretraining on web-scale data, raises
a timely question: what happens when these models are trained on their own generated …

Collapse or Thrive? Perils and Promises of Synthetic Data in a Self-Generating World

J Kazdan, R Schaeffer, A Dey, M Gerstgrasser… - arXiv preprint arXiv …, 2024 - arxiv.org
The increasing presence of AI-generated content on the internet raises a critical question:
What happens when generative machine learning models are pretrained on web-scale …

Model Editing as a Robust and Denoised variant of DPO: A Case Study on Toxicity

R Uppaal, A Dey, Y He, Y Zhong, J Hu - Neurips Safe Generative AI …, 2024 - openreview.net
Recent alignment algorithms such as direct preference optimization (DPO) have been
developed to improve the safety of large language models (LLMs) by training these models to …

Universality of the Pathway in Avoiding Model Collapse

A Dey, D Donoho - arXiv preprint arXiv:2410.22812, 2024 - arxiv.org
Researchers in empirical machine learning recently spotlighted their fears of so-called Model
Collapse. They imagined a discard workflow, where an initial generative model is trained …

Joint convergence of sample cross-covariance matrices

M Bhattacharjee, A Bose, A Dey - arXiv preprint arXiv:2103.11946, 2021 - arxiv.org
Suppose $X$ and $Y$ are $p\times n$ matrices each with mean $0$, variance $1$ and where
all moments of any order are uniformly bounded as $p,n \to \infty$. Moreover, the entries $…

[PDF][PDF] Inferring the redshift of more than 150 GRBs with a Machine Learning Ensemble model

…, V Petrosian, M Bogdan, A Dey… - arXiv preprint arXiv …, 2024 - academia.edu
Gamma-Ray Bursts (GRBs), due to their high luminosities are detected up to redshift 10, and
thus have the potential to be vital cosmological probes of early processes in the universe. …

[PDF][PDF] Characterization of non-commutative free Gaussian variables

A Bose, A Dey, W Ejsmont - Alea, 2018 - academia.edu
We provide a necessary and sufficient condition, based on zero correlation, for self-adjoint,
freely independent, identically distributed random variables on a∗-probability space to be …

[PDF][PDF] With big data come big problems: pitfalls in measuring basis risk for crop index insurance

M Stigler, A Dey, A Hobbs… - arXiv preprint arXiv …, 2022 - raw.githubusercontent.com
New satellite sensors will soon make it possible to estimate field-level crop yields, showing
a great potential for agricultural index insurance. This paper identifies an important threat to …