IEEE

A Comparative Study of Validation Methods for Sensor-Based Human Activity Recognition Using Deep Learning Models

Abstract: With the rise of wearable sensors and smart devices, human activity recognition (HAR) has become a vital research area in ubiquitous computing. Although many studies report high accuracy ...
Journal of Medical Internet Research

Development and Validation of a Machine Learning Model for Early Prediction of Delirium in Intensive Care Units Using Continuous Physiological Data: Retrospective Study

External validation was performed using data from 670 patients at Ajou University Hospital (March 2022 to September 2022). We evaluated machine learning algorithms (random forest [RF], extra-trees ...
National Bureau of Economic Research

Harvesting Differences-in-Differences and Event-Study Evidence

This paper surveys econometric innovations related to differences-in-differences estimators and to event-study models with time-varying treatment effects. Our discussion highlights tricky ...
IEEE

Efficient Handling of Data Imbalance in Health Insurance Fraud Detection Using Meta-Reinforcement Learning

Abstract: Data imbalance is one of the major challenges in health insurance fraud detection where the distribution of classes within the dataset is significantly skewed, leading statistical models to ...