no code implementations • 23 Aug 2023 • Catherine Ordun, Alexandra Cha, Edward Raff, Sanjay Purushotham, Karen Kwok, Mason Rule, James Gulley
Since thermal imagery offers a unique modality to investigate pain, the U. S. National Institutes of Health (NIH) has collected a large and diverse set of cancer patient facial thermograms for AI-based pain research.
1 code implementation • 7 Jul 2023 • Zahid Hasan, Abu Zaher Md Faridee, Masud Ahmed, Sanjay Purushotham, Heesung Kwon, Hyungtae Lee, Nirmalya Roy
As an alternative to the traditional pseudo-labeling-based approaches, we leverage the connection between the data sampling and the provided multinoulli (categorical) distribution of novel classes.
no code implementations • 10 Jun 2023 • Catherine Ordun, Edward Raff, Sanjay Purushotham
For a variety of biometric cross-spectral tasks, Visible-Thermal (VT) facial pairs are used.
1 code implementation • 14 Apr 2023 • Zahid Hasan, Masud Ahmed, Abu Zaher Md Faridee, Sanjay Purushotham, Heesung Kwon, Hyungtae Lee, Nirmalya Roy
During our experiments with UCF101 and multi-view action dataset, NEV-NCD achieves ~ 83% classification accuracy in test instances of labeled data.
no code implementations • 18 Feb 2023 • Catherine Ordun, Edward Raff, Sanjay Purushotham
Thermal facial imagery offers valuable insight into physiological states such as inflammation and stress by detecting emitted radiation in the infrared spectrum, which is unseen in the visible spectra.
no code implementations • 12 Jul 2022 • Md Mahmudur Rahman, Sanjay Purushotham
To address these limitations, we propose a new class of pseudo-value-based deep learning models for multi-state survival analysis, where we show that pseudo values - designed to handle censoring - can be a natural replacement for estimating the multi-state model quantities when derived from a consistent estimator.
no code implementations • 12 Jul 2022 • Md Mahmudur Rahman, Sanjay Purushotham
To overcome the challenges of existing federated survival analysis methods, we leverage the predictive accuracy of the deep learning models and the power of pseudo values to propose a first-of-its-kind, pseudo value-based deep learning model for federated survival analysis (FSA) called FedPseudo.
no code implementations • 7 Apr 2022 • Catherine Ordun, Alexandra N. Cha, Edward Raff, Byron Gaskin, Alex Hanson, Mason Rule, Sanjay Purushotham, James L. Gulley
Cancer patients experience high rates of chronic pain throughout the treatment process.
1 code implementation • 15 Jun 2021 • Catherine Ordun, Edward Raff, Sanjay Purushotham
These combined data are captured from similar sensors in order to bootstrap the training and transfer learning task, especially valuable because visible-thermal face datasets are limited.
no code implementations • 22 Sep 2020 • Catherine Ordun, Edward Raff, Sanjay Purushotham
But we also propose that thermal imagery may provide a semi-anonymous modality for computer vision, over RGB, which has been plagued by misuse in facial recognition.
2 code implementations • 6 May 2020 • Catherine Ordun, Sanjay Purushotham, Edward Raff
As the time to retweet increases, the density of connections also increase where in our sample, we found distinct users dominating the attention of Covid19 retweeters.
no code implementations • NeurIPS 2018 • Michael Tsang, Hanpeng Liu, Sanjay Purushotham, Pavankumar Murali, Yan Liu
Neural networks are known to model statistical interactions, but they entangle the interactions at intermediate hidden layers for shared representation learning.
no code implementations • ICML 2018 • Zhengping Che, Sanjay Purushotham, Guangyu Li, Bo Jiang, Yan Liu
Multi-Rate Multivariate Time Series (MR-MTS) are the multivariate time series observations which come with various sampling rates and encode multiple temporal dependencies.
no code implementations • ICLR 2018 • Sanjay Purushotham, Zhengping Che, Bo Jiang, Tanachat Nilanon, Yan Liu
Recent advances in computing technology and sensor design have made it easier to collect longitudinal or time series data from patients, resulting in a gigantic amount of available medical data.
1 code implementation • 23 Oct 2017 • Sanjay Purushotham, Chuizheng Meng, Zhengping Che, Yan Liu
Deep learning models (aka Deep Neural Networks) have revolutionized many fields including computer vision, natural language processing, speech recognition, and is being increasingly used in clinical healthcare applications.
no code implementations • 26 Aug 2017 • Minh Nguyen, Sanjay Purushotham, Hien To, Cyrus Shahabi
Multivariate time series (MTS) have become increasingly common in healthcare domains where human vital signs and laboratory results are collected for predictive diagnosis.
6 code implementations • 6 Jun 2016 • Zhengping Che, Sanjay Purushotham, Kyunghyun Cho, David Sontag, Yan Liu
Multivariate time series data in practical applications, such as health care, geoscience, and biology, are characterized by a variety of missing values.
Ranked #4 on Multivariate Time Series Imputation on MuJoCo
Multivariate Time Series Forecasting Multivariate Time Series Imputation +3
no code implementations • 28 Feb 2016 • Shang-Wen Li, Sanjay Purushotham, Chen Chen, Yuzhuo Ren, C. -C. Jay Kuo
Textual data such as tags, sentence descriptions are combined with visual cues to reduce the semantic gap for image retrieval applications in today's Multimodal Image Retrieval (MIR) systems.
no code implementations • 11 Dec 2015 • Zhengping Che, Sanjay Purushotham, Robinder Khemani, Yan Liu
Exponential growth in Electronic Healthcare Records (EHR) has resulted in new opportunities and urgent needs for discovery of meaningful data-driven representations and patterns of diseases in Computational Phenotyping research.