..., this study expands the literature on machine learning and text mining by examining the benefits of applying the undersampling method to a short text classification task. This study contributes to nonprofit research by demonstrating that a positive unlabeled learning text classifier can be used to develop...

... Natural Science Foundation of China (Project No. 71202077). Supplemental materials can be accessed by clicking the links in Appendix C. Editor's note: Accepted by Roger S. Debreceny. 2015 social media technology adoption corporate disclosure text classification Facebook Twitter...