IBM watson rank and retrieve training the ranker getting Value error: No JSON could be decoded

Question

I am trying to use the IBM Watson Rank and Retrieve service and I am following the tutorial with the sample data present in the portal i.e cranfield-data. However when I am trying to train the ranker using train.py I am getting the following error:

note: 1) I have uploaded the required JSON files 2) I am running the code in python2 environment.

Any help?

Answer 1

Which file from the tutorial are you passing in as the -i {relevance_file} parameter? Is it this one: https://watson-developer-cloud.github.io/doc-tutorial-downloads/retrieve-and-rank/cranfield-gt.csv?

Other things to check:

• The collection was created properly when you uploaded the https://watson-developer-cloud.github.io/doc-tutorial-downloads/retrieve-and-rank/cranfield-data.json (a search with the query q=*:* should yield 1400 results)
• The train.py file wasn't modified after download from https://watson-developer-cloud.github.io/doc-tutorial-downloads/retrieve-and-rank/train.py