Sending this again from my current address. Left Gmail a long time ago -- not 
sure the redirect still works... My apologies if this is hitting your inbox 
twice! 



_ _ _ _



Dear Wikimedia research community, 



I'd have a question for the data savvy people on this list :) 



My goal is simple: for a sample of English Wikipedia editors, I'm trying to 
identify their edits which were reverted. I can see two possible way of doing 
this: 



1. Identify the reverts using the SHA1 values. (A revert happens when the edit 
exactly restores the page to its previous state.)



2. Identify the reverts using the "undo" button. 



As I see it, solution 2 is less "precise" (you'll miss some reverts, e.g., 
those performed manually). However, it would also be less computationally 
intensive, and I don't see that it would introduce any bias (results can be 
compared across editors in a statistical model). 



However, I do not see the information about whether a revision was reverted 
using the “undo” button in the enwiki database: 
https://www.mediawiki.org/w/index.php?title=Manual:Database_layout/diagram&action=render



I find this surprising. Am I missing something? (And if so, how do you 
personally feel about strategy 1 vs. strategy 2?)



Thank you so much for any insight you might be willing to provide! :D



Sincerely,  

Jérôme


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