3 is that is that there is a clear trend of decreasing test RMSE value for the proposed algorithm (OK-ELM) compared to ELM, RR-ELM and Liu-ELM regardless of the node number.
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3 is that is that there is a clear trend of decreasing test RMSE value for the proposed algorithm (OK-ELM) compared to ELM, RR-ELM and Liu-ELM regardless of the node number.