activity
20222025
most citedPerplexed by Perplexity: Perplexity-Based Data Pruning With Small Reference Models

4 citations · 8 across the 7 of their papers we have counts for

collaborators

7 papers

cs.CL2025

Unsupervised Elicitation of Language Models

Jiaxin Wen, Zachary Ankner, Arushi Somani +10

To steer pretrained language models for downstream tasks, today's post-training paradigm relies on humans to specify desired behaviors. However, for models with superhuman capabili…

cs.LG2024

Scaling Laws for Precision

Tanishq Kumar, Zachary Ankner, Benjamin F. Spector +6

Low precision training and inference affect both the quality and cost of language models, but current scaling laws do not account for this. In this work, we devise "precision-aware…

cs.LG2024★ 1 cited

Critique-out-Loud Reward Models

Zachary Ankner, Mansheej Paul, Brandon Cui +2

Traditionally, reward models used for reinforcement learning from human feedback (RLHF) are trained to directly predict preference scores without leveraging the generation capabili…

cs.LG2024★ 4 cited

Perplexed by Perplexity: Perplexity-Based Data Pruning With Small Reference Models

Zachary Ankner, Cody Blakeney, Kartik Sreenivasan +3

In this work, we investigate whether small language models can determine high-quality subsets of large-scale text datasets that improve the performance of larger language models. W…

cs.CL2023

Dynamic Masking Rate Schedules for MLM Pretraining

Zachary Ankner, Naomi Saphra, Davis Blalock +2

Most works on transformers trained with the Masked Language Modeling (MLM) objective use the original BERT model's fixed masking rate of 15%. We propose to instead dynamically sche…

cs.LG2022★ 1 cited

The Effect of Data Dimensionality on Neural Network Prunability

Zachary Ankner, Alex Renda, Gintare Karolina Dziugaite +2

Practitioners prune neural networks for efficiency gains and generalization improvements, but few scrutinize the factors determining the prunability of a neural network the maximum…

cs.CV2022★ 2 cited

3D Neural Field Generation using Triplane Diffusion

J. Ryan Shue, Eric Ryan Chan, Ryan Po +3

Diffusion models have emerged as the state-of-the-art for image generation, among other tasks. Here, we present an efficient diffusion-based model for 3D-aware generation of neural…