In the last post introducing Python, I demonstrated how to make a simple app using variables and conditional statements. In order to do anything really powerful in a given programming language though, ...

I tried a custom ranking objective function for LGBMRanker but LGBMRanker does not call the custom loss function with the group argument, which is mandatory for learning to rank. import lightgbm as ...

The core value of functions lies in encapsulating repetitive computational logic into independent modules, achieving generalized processing through parameter passing and return value mechanisms. For ...

===== Python Environment ===== Python version : 3.12.11 (main, Jun 4 2025, 08:56:18) [GCC 11.4.0] (64-bit runtime) Python platform : Linux-3.10.0-1160.92.1.el7.x86_64 ...