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Three Essays On Opinion Mining Of Social Media Texts, Shuyuan Deng
Three Essays On Opinion Mining Of Social Media Texts, Shuyuan Deng
Theses and Dissertations
This dissertation research is a collection of three essays on opinion mining of social media texts. I explore different theoretical and methodological perspectives in this inquiry. The first essay focuses on improving lexicon-based sentiment classification. I propose a method to automatically generate a sentiment lexicon that incorporates knowledge from both the language domain and the content domain. This method learns word associations from a large unannotated corpus. These associations are used to identify new sentiment words. Using a Twitter data set containing 743,069 tweets related to the stock market, I show that the sentiment lexicons generated using the proposed method …
Why Do People Give? Similarity Based Persuasion On Charitable Appeals And Self-Presentation On Social Media, Jihye Lee
Theses and Dissertations
Despite the sizable donations and the variety of views to research an individual's charitable motivations, the individual's charitable giving has remained somewhat stagnant. Ever since the economic crisis of 2008, contributions to charities have decreased. Therefore, garnering donations is a significant challenge for charitable organizations. Moreover, for individuals who have decided to make voluntary contributions, determining which of the over 800,000 nonprofit organizations to contribute to can be a challenging task, as well. The question of how nonprofit organizations should foster awareness and receive donations is of critical importance, yet the answer is not quite clear. In the current fierce …