A Hybrid Approach by Integrating Brain Storm Optimization Algorithm with Grey Neural Network for Stock Index Forecasting

<table>Opening price fitting and forecasting results of the three stock market indices gained by the individual GNN model and the BSO-GNN model under the nonnormalization situation: (a) SSE Composite Index, (b) Shenzhen Composite Index, and (c) HuShen 300 Index.</table>

Abstract and Applied Analysis

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Figure 4: A Hybrid Approach by Integrating Brain Storm Optimization Algorithm with Grey Neural Network for Stock Index Forecasting 