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Hash table - Wikipedia

Hash table - Wikipedia

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2026-06-15 21:09:18
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Text Highlight2026-08-17 08:31:20
Original Highlight Excerpt
"Everyone knows what attention is."
Whisper Note
Attention is not a unitary phenomenon but an umbrella term for multiple related processes
Text Highlight2026-08-11 18:38:48
Original Highlight Excerpt
"a comparison sort cannot perform better than O(n log n) on average"
Whisper Note
So that's why my custom sort is always slower than the built-in.
Text Highlight2026-08-11 12:32:48
Original Highlight Excerpt
"the output of any sorting algorithm must satisfy two conditions"
Whisper Note
Even the definition sounds like a math test I'd fail.
Text Highlight2026-08-11 12:23:48
Original Highlight Excerpt
"the output of any sorting algorithm must satisfy two conditions"
Whisper Note
So that's why my custom sort broke — missed condition two.
Text Highlight2026-08-11 12:14:48
Original Highlight Excerpt
"the output of any sorting algorithm must satisfy two conditions"
Whisper Note
Two conditions? I thought it was just 'small to big' and done.
Text Highlight2026-08-09 21:06:31
Original Highlight Excerpt
"Everyone knows what attention is."
Whisper Note
Classic quote, everyone knows what attention is until you ask them to define it.
Text Highlight2026-08-09 19:35:41
Original Highlight Excerpt
"Hashing is an example of a space–time tradeoff."
Whisper Note
Ha, the infinite time option sounds like my last interview coding challenge.
Text Highlight2026-08-09 19:26:41
Original Highlight Excerpt
"Hashing is an example of a space–time tradeoff."
Whisper Note
But if memory was infinite, why would anyone bother with hashing anyway?
Text Highlight2026-08-09 16:32:41
Original Highlight Excerpt
"In a well-dimensioned hash table, the average time complexity for each lookup is independent of the number of elements stored"
Whisper Note
Average is the key word—worst case is still a nightmare though.
Text Highlight2026-08-09 16:23:41
Original Highlight Excerpt
"In a well-dimensioned hash table, the average time complexity for each lookup is independent of the number of elements stored"
Whisper Note
This is why databases use them under the hood for lookups.
Text Highlight2026-08-09 16:14:41
Original Highlight Excerpt
"In a well-dimensioned hash table, the average time complexity for each lookup is independent of the number of elements stored"
Whisper Note
Depends on the hash function, if it's bad you're back to O(n).
Text Highlight2026-08-08 15:09:57
Original Highlight Excerpt
"The term machine learning was coined in 1959 by Arthur Samuel"
Whisper Note
Arthur Samuel coined the term way back in 1959, that's wild.
Text Highlight2026-07-28 13:24:57
Original Highlight Excerpt
"The simplest way to perform the copying task perfectly would be to duplicate the signal."
Whisper Note
Duplicating the signal defeats the whole purpose, obviously.
Text Highlight2026-07-28 13:23:53
Original Highlight Excerpt
"An energy function is a macroscopic measure of a network's activation state."
Whisper Note
Wait, so lower energy means better? That's like the opposite of what I'd expect from "energy".
Text Highlight2026-07-28 13:15:57
Original Highlight Excerpt
"The simplest way to perform the copying task perfectly would be to duplicate the signal."
Whisper Note
If it's just copying, why not use a tape recorder?
Text Highlight2026-07-28 13:14:53
Original Highlight Excerpt
"An energy function is a macroscopic measure of a network's activation state."
Whisper Note
So it's basically using physics jargon to describe how the network settles into a stable state. Cool.
Text Highlight2026-07-28 13:01:34
Original Highlight Excerpt
"Content-based filtering methods are based on a description of the item and a profile of the user's preferences"
Whisper Note
But what if the user's taste changes over time? This seems too static for that.
Text Highlight2026-07-28 12:52:34
Original Highlight Excerpt
"Content-based filtering methods are based on a description of the item and a profile of the user's preferences"
Whisper Note
So basically it just matches what you liked before with similar stuff, right?
Text Highlight2026-07-28 10:20:53
Original Highlight Excerpt
"A typical generative task is as follows. At each step, a datapoint is sampled from the dataset, and part of the data is removed, and the model must infer the removed part."
Whisper Note
I've seen this in image inpainting too, not just text. Same trick, different domain.
Text Highlight2026-07-28 10:11:53
Original Highlight Excerpt
"A typical generative task is as follows. At each step, a datapoint is sampled from the dataset, and part of the data is removed, and the model must infer the removed part."
Whisper Note
That's how they train those language models? Seems almost too simple to work that well.

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