问题
When I follow "Getting started with the Natural Language Classifier service" guide line, I meet problem at Stage 2: Create and train a classifier:
$ curl -i -u "<username>":"<password>" \
-F training_data=@<path_to_file>/weather_data_train.csv \
-F training_metadata="{\"language\":\"en\",\"name\":\"TutorialClassifier\"}" \
"https://gateway.watsonplatform.net/natural-language-classifier/api/v1/classifiers"
It returns:
{
"code" : 400,
"error" : "Data too small",
"description" : "The number of training entries received = 1, which is smaller
than the required minimum of 5"
}
Any one could kindly help how to solve this problem. Thanks a lot~
Here is the guide line link: http://www.ibm.com/smarterplanet/us/en/ibmwatson/developercloud/doc/nl-classifier/get_start.shtml#create
回答1:
Just tried following the tutorial step by step and it works fine for me. I received the response "The classifier instance is in its training phase, not yet ready to accept classify requests" meaning that the training process started.
Please double check that you specified a correct path and that the content of the weather_data_train.csv file is correct: it should contain 50 lines.
I've used the following command (I executed the command within the same directory containing the .csv file):
$ curl -i -u "myusername":"mypwd" \
-F training_data=@./weather_data_train.csv \
-F training_metadata="{\"language\":\"en\",\"name\":\"TutorialClassifier\"}" \
"https://gateway.watsonplatform.net/natural-language-classifier/api/v1/classifiers"
回答2:
I just had the same problem. But I found out the importance is the @ before the path. Without that it will not work. training_data=@{path_to_file}
来源:https://stackoverflow.com/questions/36566182/when-training-data-using-ibm-bluemix-natural-language-classifier-api-return-dat