Unexpected anomalies detected - Githubissues

dotnet / machinelearning

ML.NET is an open source and cross-platform machine learning framework for .NET.

https://dot.net/ml

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Unexpected anomalies detected #5516

Open nnoradie opened 3 years ago

nnoradie commented 3 years ago

System information

OS version/distro:
.NET Version (eg., dotnet --info):

Issue

What did you do? Detect anomalies on data with obvious anomalies and mostly flat data everywhere else
What happened? Many unexpected anomalies were detected (two in image, more in output data in zip attached)
What did you expect? Only the obvious anomalies in the middle to be detected

Source code / logs

Contents:

odd_anomalies_data.csv (input)
test_date_out.csv (anomaly detection results using code here with edited options below)

Please paste or attach the code or logs or traces that would be helpful to diagnose the issue you are reporting.

antoniovs1029 commented 3 years ago

@guinao @lisahua is this related to the changes introduced in #5502 ?

lisahua commented 3 years ago

We verified this issue is not fixed by #5502 unfortunately.

guinao commented 3 years ago

We are investigating this case.

guinao commented 3 years ago

https://github.com/dotnet/machinelearning/pull/5579 created this PR to address the issue, please help review. @lisahua @nnoradie @antoniovs1029