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Rajiv Mathews

9 accepted papers

2026

Fantastic Reasoning Behaviors and Where to Find Them: Unsupervised Discovery of the Reasoning Process

ICML 2026poster

Despite the growing reasoning capabilities of recent large language models (LLMs), their internal mechanisms during the reasoning process remain underexplored. Prior approaches often rely on human-defined concepts (e.g., overthinking, reflection) at the word level to analyze reasoning in a supervise…

Cited by 0SourceScholar
2024

FedAQT: Accurate Quantized Training with Federated Learning

ICASSP 2024accepted

Federated learning (FL) has been widely used to train neural networks with the decentralized training procedure where data is only accessed on clients’ devices for privacy preservation. However, the limited computation resources on clients’ devices prevent FL of large models. To overcome the constra…

Cited by 0SourceScholar
2023

Online Model Compression for Federated Learning with Large Models

ICASSP 2023accepted

This paper addresses the challenges of training large neural networks under federated learning settings: high on-device memory usage and communication cost. The proposed Online Model Compression (OMC) provides a framework that stores model parameters in a compressed format and decompresses them only…

Cited by 0SourceScholar
2022

A Method to Reveal Speaker Identity in Distributed ASR Training, and How to Counter IT

ICASSP 2022accepted

End-to-end Automatic Speech Recognition (ASR) models are commonly trained over spoken utterances using optimization methods like Stochastic Gradient Descent (SGD). In distributed settings like Federated Learning, model training requires transmission of gradients over a network. In this work, we desi…

Cited by 0SourceScholar
2022

Capitalization Normalization for Language Modeling with an Accurate and Efficient Hierarchical RNN Model

ICASSP 2022accepted

Capitalization normalization (truecasing) is the task of restoring the correct case (uppercase or lowercase) of noisy text. We propose a fast, accurate and compact two-level hierarchical word-and-character-based recurrent neural network model. We use the truecaser to normalize user-generated text in…

Cited by 0SourceScholar
2022

Public Data-Assisted Mirror Descent for Private Model Training

ICML 2022spotlight

In this paper, we revisit the problem of using in-distribution public data to improve the privacy/utility trade-offs for differentially private (DP) model training. (Here, public data refers to auxiliary data sets that have no privacy concerns.) We design a natural variant of DP mirror descent, wher…

Cited by 68SourcePDFScholar
2021

Revealing and Protecting Labels in Distributed Training

NeurIPS 2021poster

Distributed learning paradigms such as federated learning often involve transmission of model updates, or gradients, over a network, thereby avoiding transmission of private data. However, it is possible for sensitive information about the training data to be revealed from such gradients. Prior work…

2020

Generative Models for Effective ML on Private, Decentralized Datasets

ICLR 2020poster

To improve real-world applications of machine learning, experienced modelers develop intuition about their datasets, their models, and how the two interact. Manual inspection of raw data—of representative samples, of outliers, of misclassifications—is an essential tool in a) identifying and fixing p…

Cited by 232SourceScholar