Topic Modeling, Topic Noise Modeling, Unsupervised Learning, Twitter Data, Text Data.
topics above or below. Figure 13. Topic as it was found by LDA, TND, and NLDA. Domain: Covid-19 As we can see, LDA includes words like China, city, and Wuhan, each of which likely belong in a topic in the domain, but which do not belong in this topic. TND contains words like fight, lets, and