I'm following this Tutorial. I've successfully completed Stage 3. Now in stage 4, I downloaded the sample ground truth and tried to create the ranker using REST API. The ranker is created with status as training. When I try to get that ranker by its Id after some time, I receive following error:
{
"ranker_id": "1eec74x28-rank-4116",
"name": "First Training Data",
"created": "2017-04-05T09:26:43.925Z",
"url": "https://gateway.watsonplatform.net/retrieve-and-rank/api/v1/rankers/1eec74x28-rank-4116",
"status": "Failed",
"status_description": "Error encountered during training: Training data quality standards not met: invalid header (duplicate feature names). Row 1 of input data."
}
When I tried to identify the problem I found this link. However, I'm unable to identify the issue here. I am not understanding the minimum standards of the training data. Please guide me with corrective measures.
For anyone looking here, a response to this question was posted on the IBM developer works forum: https://developer.ibm.com/answers/questions/366976/watson-retrieve-and-rank-failing-to-train-the-rank.html