Topic modeling is recognizing the words from topics present in documents or corpus of domain relevant data. This is useful because extracting the words from a document takes more time and is much more complex than extracting them from topics
“Generative Adversarial Network— the most interesting idea in the last ten years in machine learning” by Yann LeCun, VP & Chief AI Scientist at Facebook, Godfather of AI. Source: https://analyticsindiamag.com/artificial-intelligence-brings-mona-lisa-to-life-using-gans/ GAN - What is Generative Adversarial Networks ? GANs are unsupervised deep learning techniques.