Problems about Data Challenge 2015

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Joined: 2009-10-18

Hi, I have two questions about the data challenge 2015.
1. In the test data sets, the first half of the fault file data is complete, while the second half is incomplete. I cannot understand this sentence well. How to distinguish the first half and second half? Also, some faults of type 1-5 are missing. Would you like to explain this sentence for me?
2. The sampling interval is roughly 15 minutes, however variations may occur due to logging delays. Do logging delays occur in all data sets? For example, if the logging time is 2009/8/18 18:30:00 (line 13 in plant_1a.csv), the actual logging time is 2009/8/18 18:15:00. Is my understanding right?

Thanks a lot & best regards.


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