SlowGuess/NeurIPS_2023_OCR huggingface dataset:
Following [19], we test the performances of the cluster-based algorithms (RCLUB-WCU, CLUB, SCLUB) when the underlying cluster number changes. We set  $m$  as 5, 10, 20, and 50. The results are shown in Fig.5. All these algorithms' performances decrease when the cluster numbers increase, matching our theoretical results. The performances of Club and SCLUB decrease much faster than RCLUB-WCU, indicating that RCLUB-WCU is more robust when the underlying user cluster number changes.