Hacker News with Generative AI: Compression

BC7 optimal solid-color blocks (wordpress.com)
That’s right, it’s another texture compression blog post! I’ll keep it short. By “solid-color block”, I mean a 4×4 block of pixels that all have the same color. ASTC has a dedicated encoding for these (“void-extent blocks”), BC7 does not. Therefore we have an 8-bit RGBA input color and want to figure out how to best encode that color with the encoding options we have.

Graphics, Compression, Image Processing, Computer Graphics

14 points by luu 17 days ago | 1 comments

PeaZip 10.0.0 Released (peazip.github.io)
PeaZip 10.0.0 comes with a revamped GUI, providing more icon sizes, updated Themes and compression pre-sets, and better organized menus.

New Releases, Software, GUI, Compression

41 points by thunderbong 26 days ago | 15 comments

RRR: A Succinct Rank/Select Index for Bit Vectors (2011) (alexbowe.com)
This blog post will give an overview of a static bitsequence data structure known as RRR, which answers arbitrary length rank queries in $\mathcal{O}(1)$ time, and provides implicit compression.

Data Structures, Algorithms, Computer Science, Compression

26 points by Tomte 32 days ago | 0 comments

Maximum best compression for binary data: xz (LZMA) vs. ZSTD vs. 7z vs. bzip2 (dwaves.de)
once upon a time, compressing massive amounts of binary was required.

Compression, File Formats, Software, Performance

8 points by delduca 35 days ago | 4 comments

RFC9659: Window Sizing for Zstandard Content Encoding on the Web (rfc-editor.org)

Web Standards, Compression, Networking, RFC, Zstandard

8 points by mfiguiere 54 days ago | 0 comments

SQLite Transparent Compression (github.com/phiresky)
Extension for sqlite that provides transparent dictionary-based row-level compression for sqlite. This basically allows you to compress entries in a sqlite database almost as well as if you were compressing the whole DB file, but while retaining random access.

Database, Compression, SQLite, Software, Open Source

5 points by edweis 65 days ago | 2 comments

An SVE backend for astcenc (Adaptive Scalable Texture Compression Encoder) (solidpixel.github.io)

Compression, Image Processing, Software, Backend, ASTC

9 points by matt_d 106 days ago | 0 comments

The Evolution of Extreme LLM Compression: From Quip to AQLM with PV-Tuning (medium.com)

Compression, AI

10 points by annaerma 108 days ago | 0 comments

AQLM and PV-Tuning: methods that compress LLMs by 8 times, retain 95% quality (github.com/Vahe1994)

Compression, AI, Machine Learning

10 points by annaerma 121 days ago | 0 comments

Borg 2.0 beta (deduplicating backup program with compression and encryption) (borgbackup.org)