Data is a non-exclusive resource and has synergistic effects. Open data sharing will enhance the utilization of big data’s value and... Show moreData is a non-exclusive resource and has synergistic effects. Open data sharing will enhance the utilization of big data’s value and tremendously boost economic growth and transparency. Data sharing platforms have emerged worldwide, but with very limited services. Security is one of the main reasons why most data are not commonly shared. This dissertation aims to tackle several security issues in building a trustworthy data sharing ecosystem. First, I reveal the privacy risks in data sharing by designing de-anonymization and privacy inference attacks. Second, I present an analysis of the relationship between the attacker's knowledge and the privacy risk of data sharing, and try quantifying and estimating the risk. Then, I propose anonymization algorithms to protect the privacy of participants in data sharing. Finally, I survey the status quo, privacy and security concerns, and opportunities in data trading. This dissertation involves various data types with a focus on graph data and speech data; it also involves various forms of data sharing including collection, publishing, query, and trading. Show less
The conventional treatment of amblyopia in pediatric patients routinely experience low patient compliance due toits limitations. Therapeutic... Show moreThe conventional treatment of amblyopia in pediatric patients routinely experience low patient compliance due toits limitations. Therapeutic games that utilize VR technology have the potential to open new avenues of medical
research and treatment. A review of the prevailing literature shows the effectiveness of VR based games for
therapeutic applications and the potential for increased patient compliance. A strong component of the literature is
grounded in the medical humanities, specifically the way in which thought patterns, cognitive development, and perceived
social rejection affect patient engagement and treatment efficacy. In order to increase the effectiveness of
therapeutic games and streamline their development, a new framework has been created using existing research into
therapeutic games. This framework ensures that all therapeutic games meet certain criteria within ethics,
immersion, active learning, universal accessibility, aesthetics, and medicine. When applied to game development,
specifically virtual and extended reality games, it can be used to transform existing therapeutic or diagnostic models
into games operating as health care tools. The result is a more effective, lower cost, more accessible treatment option
with increased patient compliance and greater overall outcomes. Show less
