1. Ferguson, Rick (2008) Word of mouth and viral marketing: taking the temperature of the hottest trends in marketing. Journal of consumer marketing Emerald Group Publishing Limited
2. Ash, Tim (2011) Landing page optimization: The definitive guide to testing and tuning for conversions. John Wiley & Sons
3. Hamed Jelodar and Yongli Wang and Chi Yuan and Xia Feng and Xiahui Jiang and Yanchao Li and Liang Zhao (2019) Latent Dirichlet allocation {(LDA)} and topic modeling: models, applications, a survey. Multim. Tools Appl. 78(11): 15169--15211
4. Jaeho Kang and Kwang Ryel Ryu and Hyuk{-}Chul Kwon (2004) Using Cluster-Based Sampling to Select Initial Training Set for Active Learning in Text Classification. Springer, 10.1007/978-3-540-24775-3\_46, https://doi.org/10.1007/978-3-540-24775-3\_46, 384--388, 3056, Lecture Notes in Computer Science, Advances in Knowledge Discovery and Data Mining, 8th Pacific-Asia Conference, {PAKDD} 2004, Sydney, Australia, May 26-28, 2004, Proceedings, Honghua Dai and Ramakrishnan Srikant and Chengqi Zhang
5. Jagadeesh Jagarlamudi and Hal Daum{\'{e}} III and Raghavendra Udupa (2012) Incorporating Lexical Priors into Topic Models. The Association for Computer Linguistics, https://aclanthology.org/E12-1021/, 204--213, {EACL} 2012, 13th Conference of the European Chapter of the Association for Computational Linguistics, Avignon, France, April 23-27, 2012, Walter Daelemans and Mirella Lapata and Llu{\'{\i}}s M{\`{a}}rquez