Equation 1 · Part 4 · Actually Deploying an Open-Weight Model in Production
subscript
subscript
What this part means
The lower label selects a particular version, component, or indexed member of the quantity. For example, x₀ and xₜ can be values at different positions.
Its job in the formula
A subscript distinguishes a version, component, step, or member of a quantity. It does not automatically mean multiplication.
Full expression→subscript→Article meaning
The passage around this formula
Low-Rank Adaptation, LoRA, takes a different approach: it freezes the pretrained weight matrix entirely and represents the update as the product of two much smaller matrices. For a frozen weight matrix , LoRA represents the adapted weight as
Learn the underlying idea
A subscript is a label attached below a symbol. It often selects a time step, component, category, or member of a sequence.
Open the illustrated subscripts: which member of a family? guide →
Sources cited in the article section
- [7] Llama Cookbook: LLM Fine-Tuning Overview ↗
- [5] LoRA: Low-Rank Adaptation of Large Language Models ↗
- [6] QLoRA: Efficient Finetuning of Quantized LLMs ↗
These citations provide research context; check each source for the exact claim it supports.