Janardhana Punuru

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ii Dedication To my wife Sandhya Reddy, my parents Tulasamma and Nagi Reddy, and my brother Konda Reddy and his family. iii Acknowledgments Let me first express deepest appreciation and gratitude to my major adviser Dr. Jian-hua Chen, for her inspiration, encouragement, patience, mentorship, and guidance. I am grateful for her assistance and motivation(More)
Ontology of a domain mainly consists of concepts, taxonomical (hierarchical) relations and non-taxonomical relations. Automatic ontology construction requires methods for extracting both taxonomical and non-taxonomical relations. Compared to extensive works on concept extraction and taxonomical relation learning, little attention has been given on(More)
Text mining models routinely represent each document with a vector of weighted term frequencies. This bag-of-words approach has many strengths, one of which is representing the document in a compact form that can be used by standard data mining tools. However, this approach loses most of the contextual information that is conveyed in the relationship of(More)
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