News for hackers. Stuff that matters.

A comment on MongoDB shares jump more than 30% in $192M IPO. Parent comment

Re:MongoDB shares jump more than 30% in $192M IPO by rwallace on Thursday October 19, 2017 @05:49PM (#15511829)
What would the attribute columns consist of? My experience has been with named columns defined individually by humans, of which I've never seen more than a few hundred; how do you get tens of thousands? Are they a different kind of thing?
[ Parent | on HN ]
Re:MongoDB shares jump more than 30% in $192M IPO by threeseed on Thursday October 19, 2017 @06:37PM (#15512124)
Most companies who do it purely by humans can easily get into the thousands of attributes. Have seen it many times before where you hit the column limit of a SQL database.

But where you get into tens/hundreds of thousands is when you have machine learning models automatically selecting and storing important features from the data.

[ Parent | on HN ]