Method IsParamsCompatible

catboost/private/libs/options/catboost_options.cpp:1133–1171

}

bool NCatboostOptions::IsParamsCompatible(
    const TStringBuf firstSerializedParams,
    const TStringBuf secondSerializedParams)
{
    //TODO:(noxoomo, nikitxskv): i don't think this way of checking compatible is good. We should parse params and comprare fields that are essential, not all
    const TStringBuf paramsToIgnore[] = {
        "system_options",
        "flat_params",
        "metadata",
        "model_based_eval_options"
    };
    const TStringBuf dataProcessingParamsToIgnore[] = {
        "ignored_features"
    };
    const TStringBuf boostingParamsToIgnore[] = {
        "iterations",
        "learning_rate",
    };
    NJson::TJsonValue firstParams, secondParams;
    ReadJsonTree(firstSerializedParams, &firstParams);
    ReadJsonTree(secondSerializedParams, &secondParams);

    // Check ignored and MBE features
    const bool isSameMaybeIgnoredFeatures = GetMaybeIgnoredFeatures(firstParams) == GetMaybeIgnoredFeatures(secondParams);

    for (const auto& paramName : paramsToIgnore) {
        firstParams.EraseValue(paramName);
        secondParams.EraseValue(paramName);
    }
    for (const auto& paramName : dataProcessingParamsToIgnore) {
        firstParams["data_processing_options"].EraseValue(paramName);
        secondParams["data_processing_options"].EraseValue(paramName);
    }
    for (const auto& paramName : boostingParamsToIgnore) {
        firstParams["boosting_options"].EraseValue(paramName);
        secondParams["boosting_options"].EraseValue(paramName);
    }
    return isSameMaybeIgnoredFeatures && firstParams == secondParams;
}

NCatboostOptions::TCatBoostOptions::TCatBoostOptions(ETaskType taskType)
    : SystemOptions("system_options", TSystemOptions(taskType))