50  XGBoost

This is a book created from markdown and executable code.

See Knuth (1984年) for additional discussion of literate programming.

1 + 1

[1] 2

Knuth, Donald E. 1984年. 《Literate Programming》. Comput. J. (USA) 27 (2): 97～111. https://doi.org/10.1093/comjnl/27.2.97.