cURL Error Code: 7 cURL Error Message: Failed to connect to 127.0.0.1 port 9200: Connection refused cURL Error Code: 7 cURL Error Message: Failed to connect to 127.0.0.1 port 9200: Connection refused
之前我一直做证券分析,所以转量化投资可能最方便,目前学过一些算法和机器学习的课程,正在尚学堂学java。请教我知识结构方面还需要补哪些课程?
我不懂金融的