中文摘要：

首先通过对基金重仓股的财务指标和市场指标的分析,建立一套科学合理的基金重仓股指标体系;其次利用随机森林建立基金重仓股的预测模型;最后通过实验验证了方法的有效性和优越性.本研究将为投资者提供一个投资决策的优良工具.

英文摘要：

Firstly we construct a system of scientific stock index by means of analysis of financing index and market index.Secondly we construct forecast model based on random forest.In the end,numerical results show that the method used is effective and advantageous.So this research provides an excellent decision-making tool for investors.