Beijing, Jan. 08, 2024 (GLOBE NEWSWIRE) -- WiMi Hologram Cloud Inc. (NASDAQ:WIMI) ("WiMi" or the "Company"), a leading global Hologram Augmented Reality ("AR") Technology provider, today announced that the probability of backtest overfitting algorithm (PBO) was used to blockchain and bitcoin trading strategies. PBO is computed based on the combinatorial symmetric cross-validation framework (CSCV) and is designed to quantify the risk of overfitting in small sample backtests. With PBO, it is possible to asses ...