intel-analytics / analytics-zoo

Distributed Tensorflow, Keras and PyTorch on Apache Spark/Flink & Ray
https://analytics-zoo.readthedocs.io/
Apache License 2.0
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Chronos: prophet log iteration error (MAC-ONLY) #116

Open liangs6212 opened 3 years ago

liangs6212 commented 3 years ago

When the shape of the dataset is too small, prophet will produce iteration errors, e.g 100-rows fsi. No solution has been found yet.

File "/Users/arda/anaconda3/envs/py37pip/lib/python3.7/site-packages/pystan/model.py", line 581, in optimizing
    ret, sample = fit._call_sampler(stan_args)
  File "stanfit4anon_model_dfdaf2b8ece8a02eb11f050ec701c0ec_5899220251263904397.pyx", line 1046, in stanfit4anon_model_dfdaf2b8ece8a02eb11f050ec701c0ec_5899220251263904397.StanFit4Model._call_sampler
  File "stanfit4anon_model_dfdaf2b8ece8a02eb11f050ec701c0ec_5899220251263904397.pyx", line 406, in stanfit4anon_model_dfdaf2b8ece8a02eb11f050ec701c0ec_5899220251263904397._call_sampler
ValueError: normal_lpdf: Scale parameter is 0, but must be > 0!