Search Results for author: Maxwell A. Xu

Found 5 papers, 4 papers with code

Towards Time Series Reasoning with LLMs

no code implementations17 Sep 2024 Winnie Chow, Lauren Gardiner, Haraldur T. Hallgrímsson, Maxwell A. Xu, Shirley You Ren

We show that our model learns a latent representation that reflects specific time-series features (e. g. slope, frequency), as well as outperforming GPT-4o on a set of zero-shot reasoning tasks on a variety of domains.

Time Series Time Series Forecasting

Temporally Multi-Scale Sparse Self-Attention for Physical Activity Data Imputation

1 code implementation27 Jun 2024 Hui Wei, Maxwell A. Xu, Colin Samplawski, James M. Rehg, Santosh Kumar, Benjamin M. Marlin

Wearable sensors enable health researchers to continuously collect data pertaining to the physiological state of individuals in real-world settings.

Imputation

REBAR: Retrieval-Based Reconstruction for Time-series Contrastive Learning

1 code implementation1 Nov 2023 Maxwell A. Xu, Alexander Moreno, Hui Wei, Benjamin M. Marlin, James M. Rehg

The success of self-supervised contrastive learning hinges on identifying positive data pairs, such that when they are pushed together in embedding space, the space encodes useful information for subsequent downstream tasks.

Contrastive Learning Retrieval +1

PulseImpute: A Novel Benchmark Task for Pulsative Physiological Signal Imputation

1 code implementation14 Dec 2022 Maxwell A. Xu, Alexander Moreno, Supriya Nagesh, V. Burak Aydemir, David W. Wetter, Santosh Kumar, James M. Rehg

The promise of Mobile Health (mHealth) is the ability to use wearable sensors to monitor participant physiology at high frequencies during daily life to enable temporally-precise health interventions.

Imputation

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