K.V.Kanimozhi, Dr.Rajakumarkrishnan, Dr.M.Venkatesan. “Weighted Frequent Pattern Based Agglomerative Clustering for Large Unstructured Text Data”. International Journal of Control and Automation 13, no. 2s (April 26, 2020): 151 - 164. Accessed September 18, 2021. https://sersc.org/journals/index.php/IJCA/article/view/11736.