Best of 2023

The blog posts Hacker News loved most in 2023. 3,824 posts.

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1808

Do you need a vector database?

Spoiler alert: the answer is maybe! Although, my inclusion of the word “actually” betrays my bias. Vector databases are having their day right now. Three different vector DB companies have raised money on valuations up to $700 million (paywall link). Surprisingly, their rise in popularity is not for their “original”…

1812

Cash Cows

He was born, farmed, and died at Dishley, much like his father before him. But Robert Bakewell, unlike most people, caught the improving mentality, or attitude — the one thing all inventors, both then and now, have in common — which had him viewing everything around him in terms of its capacity for betterment. The…

1813

Clojure Plays Mario

Before getting too far into the weeds, let's begin with the results. Without too much effort, an AI was written in clojure that could complete all of the levels in the original Super Mario Bros for the NES except for the Bowser levels that have mazes. Namely, levels 4-4, 7-4, and 8-4 were not completed (more on this…

1814

When gradient descent is a kernel method

Suppose that we sample a large number N N N of independent random functions f i ⁣ : R → R f_i \colon \R \to \R f i ​ : R → R from a certain distribution F \Fc F and propose to solve a regression problem by choosing a linear combination f ˉ = ∑ i λ i f i . \bar{f} = \sum_i \lambda_i f_i. f ˉ ​ = i ∑ ​ λ i ​ f i ​ . For…

1819

Don't disable buttons

One of the most common accessibility issues I find (and fix) on client projects is dynamically disabled form buttons when a form is being submitted. Today I want to talk about why developers do it, why it’s bad, and what you can do instead. Let’s dig in! Why developers disable buttons Typically, I see the pattern used…