[Lgbm] support multi type prediction #3237
Merged
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Description
This PR is primarily aimed at implementing data inference functionality using the LightGBM model, supporting various types of inference including Raw Score, Leaf Index, and Feature Contribution. The inference task is accomplished through JNI calls to the LightGBM C API, and the results are returned in the form of a ByteBuffer for further processing.
double
), these values are actually integer indices. Therefore, when processing these values, it might be necessary to convert them into integer types.