100k.txt is also a generic name for any large dataset used for performance testing:
The file typically refers to a standardized plaintext list containing 100,000 entries. Depending on your field—data science, cybersecurity, or linguistics—this file serves several distinct purposes. 1. English Word Frequency List 100k.txt
In machine learning, specifically for recommendation systems, 100k.txt (often titled u.data ) refers to the . specifically for recommendation systems