Table 1 Model performance

From: What Are People Concerned About During the Pandemic? Detecting Evolving Topics about COVID-19 from Twitter

  Number of topics Coherence score (std) Diversity (std)
Rolling-ONMF 49 − 6.12 (1.65) 0.84 (0.07)
Sliding-ONMF 97 − 5.61 (1.46) 0.82 (0.09)