Mallikarjuna Rao GS, Sujani Dangeti, Shanmuk Srinivas Amiripalli. “An Efficient Modeling and Learning on CQA With Metadata”. International Journal of Control and Automation, Vol. 13, no. 4, May 2020, pp. 144 -51, http://sersc.org/journals/index.php/IJCA/article/view/16060.