I am probably missing something obvious (working on the URL example). I am
trying to swarm over my browsing history. The search_def is
here<https://github.com/oomagnitude/duke-of-url/blob/master/search_def.json>
.

Sorry I didn't include my data file, but I don't feel like posting my
browsing history on the internet. If you're curious, you can harvest the
data yourself if you use Chrome/Mac by following the
README<https://github.com/oomagnitude/duke-of-url/blob/master/README.md>.
I get this error when I try to swarm:

Traceback (most recent call last):
  File "/Users/julie/github/nupic/nta/eng/bin/run_swarm.py", line 29, in
<module>
    permutations_runner.main()
  File
"/Users/julie/github/nupic/nta/eng/lib/python2.7/site-packages/nupic/swarming/permutations_runner.py",
line 126, in main
    return runPermutations(sys.argv[1:])
  File
"/Users/julie/github/nupic/nta/eng/lib/python2.7/site-packages/nupic/swarming/permutations_runner.py",
line 418, in runPermutations
    metricsKeys=search.getDiscoveredMetricsKeys())
  File
"/Users/julie/github/nupic/nta/eng/lib/python2.7/site-packages/nupic/swarming/permutations_runner.py",
line 902, in generateReport
    bestModelNum = results['bestModel']
KeyError: 'bestModel'

Is there something obvious I'm doing wrong?

Other questions I have are:

1. There are 11 fields in the swarm. Is that too much?
2. In many cases, there is no value for one or more fields (e.g., there is
no subdomain, or if the URL has an IP, there is no TLD). Is this a problem?
3. I want to predict the URL from the other fields, so I made 'url' the
predicted field. Unfortunately I can't make it a predicted field without
also making it an input to the model. Is that expected? I'm wondering if
the presence of the entire URL in the SDR will mess up the prediction.
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