Get all candidate splits for catboosttregressor

Problem: Hi, could you please tell me how to get access to all the candidate splits for the catboostregressor? I need them to do some calculations. I checked the source code, but I think I could not find them. In the Quantization section of your documentation, you said that we can set different methods to calculate the splits. I could not find which parameter to set, either. Thanks.
catboost version:
Operating System:
CPU:
GPU:

Hi @ZexuanSun!

The vector of splits for symmeric trees on cpu is created here

catboost/catboost/private/libs/algo/greedy_tensor_search.cpp

Line 1185 in eae61e3

TVector<TCandidatesContext> candidatesContexts

Regarding the second question:

calculation of quantization borders is controlled by feature_border_type parameter
https://catboost.ai/en/docs/references/training-parameters/quantization#feature_border_type

you may specify it for each feature independently with per_float_feature_quantization
https://catboost.ai/en/docs/references/training-parameters/quantization#per_float_feature_quantization

Should you have more questions, please reopen this issue, or create a new one ❤️