J

Joe Hellerstein

@joehellerstein.bsky.social

831 Followers 281 Following

Computer things @Berkeley and music things elsewhere.

GPT4o shows that f(a,b) = (a+b)/2 is an example of a commutative function that is not associative.
GPT4 asserts that Min and Max functions are commutative but not associative, but then checks itself and backtracks.
"Whats new in Excel" dialog box. The text says "Data Aggregation Functions: We've added two incredibly powerful new data aggregation functions: GROUPBY and PIVOTBY"
An egret walking in the San Francisco Bay with the sunset behind the Golden Gate Bridge
Phil Bernstein presenting a slide on DPU networking