What is the meaning of the labels folder？

[BluthLeee]

I did not find the description of the labels folder in the readme file. I don't understand the meaning and difference of the multiple files contained in the folder. Take the Twitter_volume_AAPL.csv file in REALTWEETS as an example. The data marked by AL_lables_v1.0.json, CB_lables_v1.0.json, and SA_lables_v1.0.json are not the same. Which one is the correct manual marking?
Looking forward to your reply~

[subutai]

Please see the NAB whitepaper which contains all the details about the files, labeling process, etc. NAB combines multiple labels from humans to correct for manual errors. Those files are from different human labelers.