Published on: 2025-04-24 21:57:42
antirez 2 hours ago. 3506 views. About three years ago I saw a quite curious and interesting post on Hacker News. A student, Christopher Tarry, was able to use cosine similarity against a vector of top words frequencies in comments, in order to detect similar HN accounts — and, sometimes, even accounts actually controlled by the same user, that is, fake accounts used to uncover the identity of the writer. This is the original post: https://news.ycombinator.com/item?id=33755016 I was not aware,
Keywords: used user vector word words
Find related items on AmazonPublished on: 2025-04-25 19:01:41
Let's remove Quaternions from every 3D Engine (An Interactive Introduction to Rotors from Geometric Algebra) The clearest explanation of 3D geometric algebra within 15 minutes that I've seen so far —BrokenSymmetry I am sold. While I can understand quaternions to an extent, this way of thinking is a much more intuitive and elegant approach. —Jack Rasksilver This sets a high standard for educational material, and is a shining example of how we can improve education with today's technologies. —Se
Keywords: mathbf product vector vectors wedge
Find related items on AmazonPublished on: 2025-05-08 15:13:11
This post from Rive's Head of Runtime Chris Dalton shows how we built a fully vector-based feathering system from scratch. It’s a deep dive into the Rive Renderer, why it’s more performant, and how it solves a problem that legacy specs never could. March, 2024. GDC. I was talking to a colleague when Sarah Warn , our VP of Growth, came over and asked, “Hey, could you please do glows and shadows?” She wasn’t asking on a whim. Designers had been requesting this for a while. She knew that if we shi
Keywords: blur edges gaussian rive vector
Find related items on AmazonPublished on: 2025-05-22 20:01:22
Brought to you by explained.ai The Matrix Calculus You Need For Deep Learning Terence Parr and Jeremy Howard (Terence is a tech lead at Google and ex-Professor of computer/data science in University of San Francisco's MS in Data Science program. You might know Terence as the creator of the ANTLR parser generator. For more material, see Jeremy's fast.ai courses and University of San Francisco's Data Institute in-person version of the deep learning course.) Please send comments, suggestions,
Keywords: chain derivative function rule vector
Find related items on AmazonPublished on: 2025-05-28 15:10:30
Sharding pgvector Mar 25th, 2025 Lev Kokotov If you find yourself working with embeddings, you’ve shopped around for a vector database. pgvector is a great option if you’re using Postgres already. Once you reach a certain scale (about a million arrays), building indices starts taking a long time. Some workarounds, like parallel workers, help, but you still need to fit the whole graph in memory. The solution to lots of data is more compute, so we sharded pgvector. In this context, we’re speci
Keywords: centroids ivfflat sharding using vector
Find related items on AmazonPublished on: 2025-06-06 21:41:35
A Simple Physics Engine in GoLang ☻ Introduction Physix.go is a simple, easy-to-use, and fast physics engine written in GoLang. It provides functions to perform physics calculations efficiently, including particle-based physics simulations. Features Vector Calculations Physics Calculations Spring Dynamics Easy to use with Ebiten.go Getting Started Prerequisites GoLang must be installed. Ebiten must be installed. Installation To start, clone this project: git clone https://github.co
Keywords: collision physix rigidbody var vector
Find related items on AmazonPublished on: 2025-06-05 11:25:28
One of the most annoying things about programming in C is the lack of support for generic types, also known as parametric polymorphism. Not to be confused with the abomination that is _Generic. I wish C had something like the following: struct Vector<T> { T* data; size_t capacity; size_t length; }; void vector_resize<T>(Vector<T>* v, size_t capacity) { v->data = realloc(v->data, capacity * sizeof(T)); v->capacity = capacity; } void vector_append<T>(Vector<T>* v, T element) { if (v->length >= v
Keywords: capacity data length size_t vector
Find related items on AmazonPublished on: 2025-06-11 06:14:04
A while back I was looking for a vector database that would work across Windows / Mac / Linux platforms. Some of the options required specific processors like Intel. I am curious if there are any alternatives to a Vector DB that can run cross platform and are easy to setup?
Keywords: alternatives cross curious db vector
Find related items on AmazonPublished on: 2025-06-14 04:32:53
Robert Vanderbei has written a beautiful series of articles and talks about a method for finding the radius of the earth based on a single photograph of a sunset over a large, calm lake. Vanderbei’s analysis is an elegant and subtle exercise in classical trigonometry. In this post, I would like to present an alternative analysis in a different language: Geometric Algebra. I believe that geometric algebra is a more powerful system for formulating and solving trigonometry problems than the classi
Keywords: algebra geometric left product vectors
Find related items on AmazonPublished on: 2025-06-22 19:20:20
Published: Mar 8, 2025 at To understand how an AI can understand that the word “cat” is similar to “kitten,” you must realize cosine similarity. In short, with the help of embeddings, we can represent words as vectors in a high-dimensional space. If the word “cat” is represented as a vector [1, 0, 0], the word “kitten” would be represented as [1, 0, 1]. Now, we can use cosine similarity to measure the similarity between the two vectors. In this blog post, we will break down the concept of cosin
Keywords: cosine similarity veca vecb vectors
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