papers

Publications (9)

cs.LG2025

Retrieval Capabilities of Large Language Models Scale with Pretraining FLOPs

Jacob Portes, Connor Jennings, Erica Ji Yuen +2

How does retrieval performance scale with pretraining FLOPs? We benchmark retrieval performance across LLM model sizes from 125 million parameters to 7 billion parameters pretraine…

cs.CL2024

MosaicBERT: A Bidirectional Encoder Optimized for Fast Pretraining

Jacob Portes, Alex Trott, Sam Havens +6

Although BERT-style encoder models are heavily used in NLP research, many researchers do not pretrain their own BERTs from scratch due to the high cost of training. In the past hal…

cs.LG2025

Beyond Chinchilla-Optimal: Accounting for Inference in Language Model Scaling Laws

Nikhil Sardana, Jacob Portes, Sasha Doubov +1

Large language model (LLM) scaling laws are empirical formulas that estimate changes in model quality as a result of increasing parameter count and training data. However, these fo…

cs.AI2026

KARL: Knowledge Agents via Reinforcement Learning

Jonathan D. Chang, Andrew Drozdov, Shubham Toshniwal +23

We present a system for training enterprise search agents via reinforcement learning that achieves state-of-the-art performance across a diverse suite of hard-to-verify agentic sea…

cs.LG2024

LoRA Learns Less and Forgets Less

Dan Biderman, Jacob Portes, Jose Javier Gonzalez Ortiz +9

Low-Rank Adaptation (LoRA) is a widely-used parameter-efficient finetuning method for large language models. LoRA saves memory by training only low rank perturbations to selected w…

cs.LG2022

Fast Benchmarking of Accuracy vs. Training Time with Cyclic Learning Rates

Jacob Portes, Davis Blalock, Cory Stephenson +1

Benchmarking the tradeoff between neural network accuracy and training time is computationally expensive. Here we show how a multiplicative cyclic learning rate schedule can be use…

cs.LG2024

Long Context RAG Performance of Large Language Models

Quinn Leng, Jacob Portes, Sam Havens +2

Retrieval Augmented Generation (RAG) has emerged as a crucial technique for enhancing the accuracy of Large Language Models (LLMs) by incorporating external information. With the a…

cs.AI2026

OfficeQA Pro: An Enterprise Benchmark for End-to-End Grounded Reasoning

Krista Opsahl-Ong, Arnav Singhvi, Jasmine Collins +10

We introduce OfficeQA Pro, a benchmark for evaluating AI agents on grounded, multi-document reasoning over a large and heterogeneous document corpus. The corpus consists of U.S. Tr…

cs.LG2023

LIMIT: Less Is More for Instruction Tuning Across Evaluation Paradigms

Aditi Jha, Sam Havens, Jeremy Dohmann +2

Large Language Models are traditionally finetuned on large instruction datasets. However recent studies suggest that small, high-quality datasets can suffice for general purpose in…