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Error: ValueError - dataset input should have multiple elements #325

amper43 opened this Issue Dec 18, 2018 · 0 comments


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amper43 commented Dec 18, 2018

After labeling a Jump segment got following error:



2018-12-18 08:51:45,481 [Analytics] [ERROR]  handle_analytic_task exception: 'Traceback (most recent call last):
  File "bin/../analytics/", line 77, in handle_analytic_task
    result_payload = await self.__handle_analytic_task(task)
  File "bin/../analytics/", line 69, in __handle_analytic_task
    return await worker.do_train(payload['segments'], data, payload['cache'])
  File "bin/../analytics/", line 28, in do_train
    new_cache: ModelCache = await self._training_feature
  File "/usr/local/lib/python3.6/concurrent/futures/", line 56, in run
    result = self.fn(*self.args, **self.kwargs)
  File "bin/../analytics/detectors/", line 43, in train
    new_cache =, segments, cache)
  File "bin/../analytics/models/", line 38, in fit
    self.do_fit(dataframe, segments)
  File "bin/../analytics/models/", line 46, in do_fit
    segment_cent_index, jump_height, jump_length = utils.find_parameters(segment_data, segment_from_index, 'jump')
  File "bin/../analytics/utils/", line 219, in find_parameters
    segment_median, segment_max_line, segment_min_line = utils.get_distribution_density(flat_segment_dropna)
  File "bin/../analytics/utils/", line 197, in get_distribution_density
    pdf = gaussian_kde(segment)
  File "/usr/local/lib/python3.6/site-packages/scipy/stats/", line 169, in __init__
    raise ValueError("`dataset` input should have multiple elements.")
ValueError: `dataset` input should have multiple elements.
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