Search Results for author: Hassan Ghasemzadeh

Found 20 papers, 9 papers with code

Designing User-Centric Behavioral Interventions to Prevent Dysglycemia with Novel Counterfactual Explanations

no code implementations2 Oct 2023 Asiful Arefeen, Hassan Ghasemzadeh

GlyCoach achieves 87\% sensitivity in the simulation-aided validation, surpassing the state-of-the-art techniques for generating counterfactual explanations by at least $10\%$.

counterfactual

Stress Classification and Personalization: Getting the most out of the least

no code implementations12 Jul 2021 Ramesh Kumar Sah, Hassan Ghasemzadeh

Stress detection and monitoring is an active area of research with important implications for the personal, professional, and social health of an individual.

Classification

Inter-Beat Interval Estimation with Tiramisu Model: A Novel Approach with Reduced Error

1 code implementation1 Jul 2021 Asiful Arefeen, Ali Akbari, Seyed Iman Mirzadeh, Roozbeh Jafari, Behrooz A. Shirazi, Hassan Ghasemzadeh

However, extracting IBIs from noisy signals is challenging since the morphology of the signal is distorted in the presence of the noise.

Denoising Heart Rate Variability

Linear Mode Connectivity in Multitask and Continual Learning

1 code implementation ICLR 2021 Seyed Iman Mirzadeh, Mehrdad Farajtabar, Dilan Gorur, Razvan Pascanu, Hassan Ghasemzadeh

Continual (sequential) training and multitask (simultaneous) training are often attempting to solve the same overall objective: to find a solution that performs well on all considered tasks.

Continual Learning Linear Mode Connectivity

Transfer Learning for Activity Recognition in Mobile Health

1 code implementation12 Jul 2020 Yuchao Ma, Andrew T. Campbell, Diane J. Cook, John Lach, Shwetak N. Patel, Thomas Ploetz, Majid Sarrafzadeh, Donna Spruijt-Metz, Hassan Ghasemzadeh

While activity recognition from inertial sensors holds potential for mobile health, differences in sensing platforms and user movement patterns cause performance degradation.

Activity Recognition Transfer Learning

Pervasive Lying Posture Tracking

no code implementations19 Jun 2020 Paratoo Alinia, Ali Samadani, Mladen Milosevic, Hassan Ghasemzadeh, Saman Parvaneh

To answer these important research questions, in this article, we propose a comprehensive approach to design a sensor system that uses a single accelerometer along with machine learning algorithms for in-bed lying posture classification.

BIG-bench Machine Learning

Understanding the Role of Training Regimes in Continual Learning

4 code implementations NeurIPS 2020 Seyed Iman Mirzadeh, Mehrdad Farajtabar, Razvan Pascanu, Hassan Ghasemzadeh

However, there has been limited prior work extensively analyzing the impact that different training regimes -- learning rate, batch size, regularization method-- can have on forgetting.

Continual Learning

Dropout as an Implicit Gating Mechanism For Continual Learning

2 code implementations24 Apr 2020 Seyed-Iman Mirzadeh, Mehrdad Farajtabar, Hassan Ghasemzadeh

However, it is more reliable to preserve the knowledge it has learned from the previous tasks.

Continual Learning

Personality Assessment from Text for Machine Commonsense Reasoning

no code implementations15 Apr 2020 Niloofar Hezarjaribi, Zhila Esna Ashari, James F. Frenzel, Hassan Ghasemzadeh, Saied Hemati

Our analysis of data collected with 300 participants demonstrate that PerSense predicts answers to commonsense questions with 82. 3% accuracy using a Random Forest classifier.

BIG-bench Machine Learning

Proximity-Based Active Learning on Streaming Data: A Personalized Eating Moment Recognition

1 code implementation29 Mar 2020 Marjan Nourollahi, Seyed Ali Rokni, Hassan Ghasemzadeh

To facilitate development of personalized models, we propose PALS, Proximity-based Active Learning on Streaming data, a novel proximity-based model for recognizing eating gestures with the goal of significantly decreasing the need for labeled data with new users.

Active Learning Activity Recognition +2

Adversarial Transferability in Wearable Sensor Systems

no code implementations17 Mar 2020 Ramesh Kumar Sah, Hassan Ghasemzadeh

In this work, we take the first stride in studying adversarial transferability in wearable sensor systems from the following perspectives: 1) transferability between machine learning systems, 2) transferability across subjects, 3) transferability across sensor body locations, and 4) transferability across datasets.

BIG-bench Machine Learning Decision Making +1

ActiLabel: A Combinatorial Transfer Learning Framework for Activity Recognition

no code implementations16 Mar 2020 Parastoo Alinia, Iman Mirzadeh, Hassan Ghasemzadeh

Sensor-based human activity recognition has become a critical component of many emerging applications ranging from behavioral medicine to gaming.

Human Activity Recognition Transfer Learning

Mindful Active Learning

1 code implementation28 Jul 2019 Zhila Esna Ashari, Hassan Ghasemzadeh

This capacity constraint is manifested not only in the number of queries that a person can respond to in a given time-frame but also in the lag between the time that a query is made and when it is responded to.

Active Learning Activity Recognition +1

Resource-Efficient Wearable Computing for Real-Time Reconfigurable Machine Learning: A Cascading Binary Classification

no code implementations7 Jul 2019 Mahdi Pedram, Seyed Ali Rokni, Marjan Nourollahi, Houman Homayoun, Hassan Ghasemzadeh

We propose to transform the activity recognition problem from a multi-class classification problem to a hierarchical model of binary decisions using cascading online binary classifiers.

Activity Recognition BIG-bench Machine Learning +3

Resource-Efficient Computing in Wearable Systems

no code implementations7 Jul 2019 Mahdi Pedram, Mahsan Rofouei, Francesco Fraternali, Zhila Esna Ashari, Hassan Ghasemzadeh

We propose two optimization techniques to minimize memory usage and computation while meeting system timing constraints for real-time classification in wearable systems.

Activity Recognition General Classification

Improved Knowledge Distillation via Teacher Assistant

3 code implementations9 Feb 2019 Seyed-Iman Mirzadeh, Mehrdad Farajtabar, Ang Li, Nir Levine, Akihiro Matsukawa, Hassan Ghasemzadeh

To alleviate this shortcoming, we introduce multi-step knowledge distillation, which employs an intermediate-sized network (teacher assistant) to bridge the gap between the student and the teacher.

Knowledge Distillation

Personalized Human Activity Recognition Using Convolutional Neural Networks

no code implementations25 Jan 2018 Seyed Ali Rokni, Marjan Nourollahi, Hassan Ghasemzadeh

A major barrier to the personalized Human Activity Recognition using wearable sensors is that the performance of the recognition model drops significantly upon adoption of the system by new users or changes in physical/ behavioral status of users.

Human Activity Recognition Transfer Learning

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