Search Results for author: Peter Washington

Found 20 papers, 1 papers with code

Evaluating Fair Feature Selection in Machine Learning for Healthcare

no code implementations28 Mar 2024 Md Rahat Shahriar Zawad, Peter Washington

Our approach addresses both distributive and procedural fairness within the fair machine learning context.

Decision Making Fairness +1

TikTokActions: A TikTok-Derived Video Dataset for Human Action Recognition

no code implementations14 Feb 2024 Yang Qian, Yinan Sun, Ali Kargarandehkordi, Onur Cezmi Mutlu, Saimourya Surabhi, Pingyi Chen, Zain Jabbar, Dennis Paul Wall, Peter Washington

We find that the performance of the model pre-trained using our Tik-Tok dataset is comparable to models trained on larger action recognition datasets (95. 3% on UCF101 and 53. 24% on HMDB51).

Action Recognition Temporal Action Localization

A Comparison of Personalized and Generalized Approaches to Emotion Recognition Using Consumer Wearable Devices: Machine Learning Study

no code implementations28 Aug 2023 Joe Li, Peter Washington

Objective: We aim to study the differences between personalized and generalized machine learning models for three-class emotion classification (neutral, stress, and amusement) using wearable biosignal data.

Classification Emotion Classification +1

Addressing Racial Bias in Facial Emotion Recognition

no code implementations9 Aug 2023 Alex Fan, Xingshuo Xiao, Peter Washington

Fairness in deep learning models trained with high-dimensional inputs and subjective labels remains a complex and understudied area.

Facial Emotion Recognition Fairness

Personalization of Stress Mobile Sensing using Self-Supervised Learning

no code implementations4 Aug 2023 Tanvir Islam, Peter Washington

This personalized learning method can enable precision health systems which are tailored to each subject and require few annotations by the end user, thus allowing for the mobile sensing of increasingly complex, heterogeneous, and subjective outcomes such as stress.

Self-Supervised Learning

Self-Supervised Learning for Audio-Based Emotion Recognition

no code implementations23 Jul 2023 Peranut Nimitsurachat, Peter Washington

While the field of affective computing using audio data is rich, a major barrier to achieve consistently high-performance models is the paucity of available training labels.

Emotion Recognition Marketing +1

Personalized Prediction of Recurrent Stress Events Using Self-Supervised Learning on Multimodal Time-Series Data

no code implementations7 Jul 2023 Tanvir Islam, Peter Washington

We test our model on the Wearable Stress and Affect Detection (WESAD) dataset, demonstrating that our SSL models outperform non-SSL models while utilizing less than 5% of the annotations.

Self-Supervised Learning Time Series

A Review of and Roadmap for Data Science and Machine Learning for the Neuropsychiatric Phenotype of Autism

no code implementations7 Mar 2023 Peter Washington, Dennis P. Wall

We review the literature of digital health methods for autism behavior quantification using data science.

An Exploration of Active Learning for Affective Digital Phenotyping

no code implementations5 Apr 2022 Peter Washington, Cezmi Mutlu, Aaron Kline, Cathy Hou, Kaitlyn Dunlap, Jack Kent, Arman Husic, Nate Stockham, Brianna Chrisman, Kelley Paskov, Jae-Yoon Jung, Dennis P. Wall

Using frames collected from gameplay acquired from a therapeutic smartphone game for children with autism, we run a simulation of active learning using gameplay prompts as metadata to aid in the active learning process.

Active Learning

MLPro: A System for Hosting Crowdsourced Machine Learning Challenges for Open-Ended Research Problems

no code implementations4 Apr 2022 Peter Washington, Aayush Nandkeolyar, Sam Yang

The task of developing a machine learning (ML) model for a particular problem is inherently open-ended, and there is an unbounded set of possible solutions.

Dimensionality Reduction Imputation

Challenges and Opportunities for Machine Learning Classification of Behavior and Mental State from Images

no code implementations26 Jan 2022 Peter Washington, Cezmi Onur Mutlu, Aaron Kline, Kelley Paskov, Nate Tyler Stockham, Brianna Chrisman, Nick Deveau, Mourya Surhabi, Nick Haber, Dennis P. Wall

Computer Vision (CV) classifiers which distinguish and detect nonverbal social human behavior and mental state can aid digital diagnostics and therapeutics for psychiatry and the behavioral sciences.

Active Learning BIG-bench Machine Learning +4

Training and Profiling a Pediatric Emotion Recognition Classifier on Mobile Devices

no code implementations22 Aug 2021 Agnik Banerjee, Peter Washington, Cezmi Mutlu, Aaron Kline, Dennis P. Wall

This balanced accuracy is only 1. 79% less than the current state of the art for CAFE, which used a model that contains 26. 62x more parameters and was unable to run on the Moto G6, even when fully optimized.

Emotion Recognition Image Classification

Classification of Abnormal Hand Movement for Aiding in Autism Detection: Machine Learning Study

1 code implementation18 Aug 2021 Anish Lakkapragada, Aaron Kline, Onur Cezmi Mutlu, Kelley Paskov, Brianna Chrisman, Nate Stockham, Peter Washington, Dennis Wall

This work aims to demonstrate the feasibility of deep learning technologies for detecting hand flapping from unstructured home videos as a first step towards validating whether models and digital technologies can be leveraged to aid with autism diagnoses.

Action Detection Activity Detection +2

Activity Recognition with Moving Cameras and Few Training Examples: Applications for Detection of Autism-Related Headbanging

no code implementations10 Jan 2021 Peter Washington, Aaron Kline, Onur Cezmi Mutlu, Emilie Leblanc, Cathy Hou, Nate Stockham, Kelley Paskov, Brianna Chrisman, Dennis P. Wall

Activity recognition computer vision algorithms can be used to detect the presence of autism-related behaviors, including what are termed "restricted and repetitive behaviors", or stimming, by diagnostic instruments.

Action Detection Activity Detection +1

Training Affective Computer Vision Models by Crowdsourcing Soft-Target Labels

no code implementations10 Jan 2021 Peter Washington, Onur Cezmi Mutlu, Emilie Leblanc, Aaron Kline, Cathy Hou, Brianna Chrisman, Nate Stockham, Kelley Paskov, Catalin Voss, Nick Haber, Dennis Wall

While the F1-score for a one-hot encoded classifier is much higher (94. 33% vs. 78. 68%) with respect to the ground truth CAFE labels, the output probability vector of the crowd-trained classifier more closely resembles the distribution of human labels (t=3. 2827, p=0. 0014).

BIG-bench Machine Learning

Training an Emotion Detection Classifier using Frames from a Mobile Therapeutic Game for Children with Developmental Disorders

no code implementations16 Dec 2020 Peter Washington, Haik Kalantarian, Jack Kent, Arman Husic, Aaron Kline, Emilie Leblanc, Cathy Hou, Cezmi Mutlu, Kaitlyn Dunlap, Yordan Penev, Maya Varma, Nate Stockham, Brianna Chrisman, Kelley Paskov, Min Woo Sun, Jae-Yoon Jung, Catalin Voss, Nick Haber, Dennis P. Wall

The classifier achieved 66. 9% balanced accuracy and 67. 4% F1-score on the entirety of CAFE as well as 79. 1% balanced accuracy and 78. 0% F1-score on CAFE Subset A, a subset containing at least 60% human agreement on emotions labels.

Emotion Classification

A Wearable Social Interaction Aid for Children with Autism

no code implementations19 Apr 2020 Nick Haber, Catalin Voss, Jena Daniels, Peter Washington, Azar Fazel, Aaron Kline, Titas De, Terry Winograd, Carl Feinstein, Dennis P. Wall

With most recent estimates giving an incidence rate of 1 in 68 children in the United States, the autism spectrum disorder (ASD) is a growing public health crisis.

Emotion Recognition Memorization

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