一般的认识中，股民倾向于认为同一母公司的多家上市公司股票价格之间带有较

Generally speaking, stockholders tend to believe that there is a strong linkage between the stock prices of multiple listed companies of the same parent company. However, there is a lot of noise in stock data, which makes it difficult for general linear classification methods to achieve better prediction results. Therefore, there are two ideas for predicting stock prices: one is the feature expansion idea, which takes into account as much as possible stock price linkage factors, and the other is the feature simplification idea, which only retains important features for analysis

In general understanding, shareholders tend to think that there is a strong linkage between the stock prices of several listed companies of the same parent company. However, there is a lot of noise in stock data, which makes it difficult for the general linear classification method to achieve better prediction results. Therefore, the idea of predicting stock price derives two kinds: one is the idea of feature expansion, taking into account as much as possible the factors of stock price linkage, and the other is the idea of feature streamlining, which only retains important features for analysis

Generally speaking, shareholders tend to think that the stock prices of several listed companies of the same parent company have strong linkage. However, there are a lot of noise in stock data, which makes it difficult for general linear classification methods to achieve good prediction results. Therefore, there are two ways to predict the stock price: one is to expand the features, which takes into account the linkage factors of the stock price as much as possible, and the other is to simplify the features and only keep the important features for analysis<br>