使用sklearn保存pmml文件时提示RuntimeError: The SkLearn2PMML application has failed. The Java executable should have printed more information about the failure into its standard output and/or standard error streams
import sklearn2pmml as pmml
from sklearn2pmml import PMMLPipeline
from sklearn import linear_model as lm
import os
import pandas as pd
def save_model(data, model_path):
pipeline = PMMLPipeline([("regression", lm.LinearRegression())]) #定义模型，放入pipeline管道
pipeline.fit(data[["x"]], data["y"]) #训练模型，由数据中第一行的名称确定自变量和因变量
pmml.sklearn2pmml(pipeline, model_path, with_repr=True) #保存模型
if __name__ == "__main__":
data = pd.read_csv("training_data.csv")
model_path = model_path = os.path.dirname(os.path.abspath('.')) + "/my_example_model.pmml"
save_model(data, model_path)
print("模型保存完成。")
Standard output is empty
Standard error:
The operation couldn’t be completed. Unable to locate a Java Runtime.
Please visit http://www.java.com for information on installing Java.
---------------------------------------------------------------------------
RuntimeError Traceback (most recent call last)
/var/folders/9q/dmc80xm925nbdvh0_r4x7zv40000gn/T/ipykernel_79102/3799291579.py in <module>
13 data = pd.read_csv("training_data.csv")
14 model_path = model_path = os.path.dirname(os.path.abspath('.')) + "/my_example_model.pmml"
---> 15 save_model(data, model_path)
16 print("模型保存完成。")
/var/folders/9q/dmc80xm925nbdvh0_r4x7zv40000gn/T/ipykernel_79102/3799291579.py in save_model(data, model_path)
8 pipeline = PMMLPipeline([("regression", lm.LinearRegression())]) #定义模型，放入pipeline管道
9 pipeline.fit(data[["x"]], data["y"]) #训练模型，由数据中第一行的名称确定自变量和因变量
---> 10 pmml.sklearn2pmml(pipeline, model_path, with_repr=True) #保存模型
11
12 if __name__ == "__main__":
~/Documents/anaconda/anaconda3/lib/python3.9/site-packages/sklearn2pmml/__init__.py in sklearn2pmml(pipeline, pmml, user_classpath, with_repr, debug)
257 print("Standard error is empty")
258 if retcode:
--> 259 raise RuntimeError("The SkLearn2PMML application has failed. The Java executable should have printed more information about the failure into its standard output and/or standard error streams")
260 finally:
261 if debug:
RuntimeError: The SkLearn2PMML application has failed. The Java executable should have printed more information about the failure into its standard output and/or standard error streams