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Full-Text Articles in Physical Sciences and Mathematics
A Physiological Signal Processing System For Optimal Engagement And Attention Detection., Ashwin Belle
A Physiological Signal Processing System For Optimal Engagement And Attention Detection., Ashwin Belle
Theses and Dissertations
In today’s high paced, hi-tech and high stress environment, with extended work hours, long to-do lists and neglected personal health, sleep deprivation has become common in modern culture. Coupled with these factors is the inherent repetitious and tedious nature of certain occupations and daily routines, which all add up to an undesirable fluctuation in individuals’ cognitive attention and capacity. Given certain critical professions, a momentary or prolonged lapse in attention level can be catastrophic and sometimes deadly. This research proposes to develop a real-time monitoring system which uses fundamental physiological signals such as the Electrocardiograph (ECG), to analyze and predict …
Contributions To K-Means Clustering And Regression Via Classification Algorithms, Raied Salman
Contributions To K-Means Clustering And Regression Via Classification Algorithms, Raied Salman
Theses and Dissertations
The dissertation deals with clustering algorithms and transforming regression prob-lems into classification problems. The main contributions of the dissertation are twofold; first, to improve (speed up) the clustering algorithms and second, to develop a strict learn-ing environment for solving regression problems as classification tasks by using support vector machines (SVMs). An extension to the most popular unsupervised clustering meth-od, k-means algorithm, is proposed, dubbed k-means2 (k-means squared) algorithm, appli-cable to ultra large datasets. The main idea is based on using a small portion of the dataset in the first stage of the clustering. Thus, the centers of such a smaller …