GATED RECURRENT UNITS CHAOTIC TIME SERIES NONLINEAR DYNAMIC SYSTEMS GRAPH NEURAL NETWORKS ARTIFICIAL NEURAL NETWORKS NONLINEAR OPTIMIZATION MULTI-STEP PREDICTION LONG SHORT-TERM MEMORY SIGNAL PROCESSING TIME SERIES ANALYSIS SUPERVISED LEARNING ARTIFICIAL IMMUNE SYSTEMS BLIND SEPARATION ECHO STATE NETWORK OILFIELD FORECASTING NEURAL NETWORKS SECOND-ORDER OPTIMIZATION