Browsing University of Waterloo by Supervisor "Chen, Helen"
Now showing items 1-8 of 8
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Cancer Risks from Radiation Medical Imaging in Children: A Scoping Review
(University of Waterloo, 2018-09-11)Background: radiation medical imaging is a valuable tool in detecting diseases. Biological Effects of Ionizing Radiation Report (BEIR VII Phase 2) suggested that radiation exposures, even at low dosages, may impose stochastic ... -
Differentially Private Learning with Noisy Labels
(University of Waterloo, 2020-05-28)Supervised machine learning tasks require large labelled datasets. However, obtaining such datasets is a difficult task and often leads to noisy labels due to human errors or adversarial perturbation. Recent studies have ... -
Factors Associated with Dialysis Withdrawal in Chronic Dialysis Patients
(University of Waterloo, 2018-08-13)Background: Research on the factors associated with dialysis withdrawal in chronic dialysis patients has been limited. Authors and clinicians have used different definitions for dialysis withdrawal, resulting in inconsistent ... -
Innovations in Domain Knowledge Augmentation of Contextual Models
(University of Waterloo, 2022-08-03)The digital transformation of our society is creating a tremendous amount of data at an unprecedented rate. A large part of this data is in unstructured text format. While enjoying the benefit of instantaneous data access, ... -
Kernel Methods and Measures for Classification with Transparency, Interpretability and Accuracy in Health Care
(University of Waterloo, 2018-09-05)Support vector machines are a popular method in machine learning. They learn from data about a subject, for example, lung tumors in a set of patients, to classify new data, such as, a new patient’s tumor. The new tumor is ... -
SoMeIL: A social media infodemic listening for public health behaviours conceptual framework
(University of Waterloo, 2023-10-10)Introduction The coronavirus disease 2019 (COVID-19) pandemic has escalated health infodemics given substantially digitalized daily life since the pandemic began. The number of social media users has skyrocketed. However, ... -
Survival analysis of chronic dialysis patients
(University of Waterloo, 2018-08-13)Background: The number of dialysis patients is steadily rising in Canada because of demographic changes as well as an increased prevalence of associated risk factors such as hypertension, diabetes, and aging (Clark & Khan, ... -
Using Natural Language Processing to Detect Breast Cancer Recurrence in Clinical Notes: A Hierarchical Machine Learning Approach
(University of Waterloo, 2021-04-26)The vast amount of data amassed in the electronic health records (EHRs) creates needs and opportunities for automated extraction of information from EHRs using machine learning techniques. Natural language processing (NLP) ...