A Method for Constructing the Prototype of Domain Ontology: The Case of Digital Signature

• Main Authors: Wei-Ting Chao, 趙為婷
• Other Authors: Fang-Ming Hsu
• Format: Others
• Published: 2015
• Online Access: http://ndltd.ncl.edu.tw/handle/h7qx2w

碩士 === 國立東華大學 === 資訊管理碩士學位學程 === 103 === 　　In the rapid development of information technology era, there are more and more electronic records preserved in different formats. Electronic records contain important information and knowledge in various fields, include various government agencies' official document regarding the rights of people and secret message that wouldn’t let the third party knows. Through digital signature, people can identify and confirm the signer's identity, the qualifications and the authenticity of electronic records. Therefore, people begin to realize the importance of digital signatures. Besides, the extraction of the information regarding the users’ need in huge and unstructured electronic records and organizing them into structured knowledge via a series of processes to reach the purpose of sharing knowledge have become important issues in recent years. 　　Traditional way to build ontology always takes considerable time and manual cost. This study tries to develop a simple and objective method for developing ontology in the case of digital signature. First, we collect the relevant research literature of digital signature. Next, this study establishes common vocabulary table and index table through steps of text mining technology (TF-IDF) and data cleaning. Then, hierarchical clustering is used to find terms cluster with high correlation. The correlation between two words by association rule is calculated. Finally, this study integrates document content and human judgment to derive the ontology prototype of digital signature and find out the hidden characteristics and connection from huge data. This study can build an ontology prototype and reach the goal of knowledge sharing in a specific field.