PaperLens
紙
Students
Professional
JA
EN
◐
Sign in with Google
Sign in
Read
Home
Close reading
New
Textbook
Go deeper
Learn
Lab
Landscape
Contributors
Glossary
You
Search
All-access
My Page
#common-crawl
1 articles
01
2026-08-26
·
Large Language Models
·
★ MEMBER
·
PAPER
·
10 min read
Building a Pretraining Corpus — From Web Sludge to Textbook Quality
Behind the single line "pretrained on a large corpus of web text" sit four stages: text extraction, quality filtering, deduplication, and mixture weights. This is a from-scratch walkthrough of how a gravel heap called Common Crawl gets sifted into textbook-quality prose — from the MinHash equation to the parameter names you actually touch.