1. University distinguished professor, Department of Computer Science and Engineering and Director, Center of Excellence for Document Analysis and Recognition, University at Buffalo, State University of New York, Buffalo, NY 14228, US.
2. Assistant professor, Pace University, Pleasantville, NY 10570, US.
3. Research scientist, IBM, Endicott, NY, US.
4. Doctoral candidate, Department of Computer Science and Engineering, University at Buffalo, State University of New York, Buffalo, NY 14228, US.