Equation 2 · Part 1 · How AI for Science and Medicine Actually Works
Symbol x_t
What this part means
a coordinate in the stated process.
Its job in the formula
is a part of this expression. Its role is fixed by the surrounding article and by the operations shown in the formula.
Full expression→Symbol x_t→Article meaning
Where the article explains it
For coordinates noised to at noise level t ,
The passage around this formula
The larger change is in how coordinates are produced. Rather than a Structure Module built on rotations and translations, AlphaFold3 uses a diffusion module that operates directly on raw atom coordinates and a coarse token representation, without rotational frames at all. Diffusion models are trained on a simple, general task: take a true data point, corrupt it with noise at a known level, and train a network to recover the original from the corrupted version. For coordinates noised to at noise level t ,
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 →
See this notation across published equations →
Sources cited in the article section
- [1] Highly Accurate Protein Structure Prediction with AlphaFold ↗
- [2] Accurate Structure Prediction of Biomolecular Interactions with AlphaFold 3 ↗
These citations provide research context; check each source for the exact claim it supports.