In order to explore the correlation between steel futures price and steel spot price, this paper first collects the time series data of futures and spot trading of rebar and hot rolled coil in recent years, and uses a variety of time series data similarity measurement algorithms and Granger causality test algorithm to measure the correlation between the two groups of data. The statistical analysis results of different algorithms show that there is a strong correlation between rebar futures price and spot price. In view of this, we use long short-term memory (LSTM) model to predict the spot price according to the historical data of futures and spot. According to the comparison between the predicted data and the real spot price, we can draw the conclusion that the futures price can be used to predict the spot price. The forecast results will help to explore future price with rising prices, and then recommend futures it to steel investors.
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