I stumbled upon the Suggestions folder /Users/zezuz/Library/Suggestions
while browsing through my MacBook Pro, running High Sierra. (which btw, I never knew even existed)
In the folder is a file named chatLengthEstimator.cmsketch
. I tried to view it but no program I have can open a .cmsketch file. Clicking the "search App Store" option resulted in nothing.
A google search also returned little, but it seems that it's some sort of sample or database file, possibly related to TIDB?
My questions are:
- What is a .cmsketch file?
- What is, specifically, the chatLengthEstimator.cmsketch file and why is it being "suggested" to me?
Thank you in advance for your help!
Best Answer
The files in
~/Library/Suggestions
are used internally to support some of macOS's machine learning features, like Spotlight Suggestions, Suggested Contacts, and data detectors. These files are not being suggested to you.A
.cmSketch
file probably contains a count-min sketch data structure. It does not contain any human-readable data. Given the name of this file, it is probably used to estimate how often, or for how long, you chat with your contacts on iMessage.