Equation 8 · Part 2 · One Model, Many Modalities: What Multimodal Systems Actually Share
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
with image embedding , text embedding , and a learned temperature . Radford and colleagues showed that this simple pre-training task, applied to 400 million image–text pairs collected from the internet, matched the accuracy of the original ResNet-50 on ImageNet zero-shot without using any of the 1.28 million training examples that network was trained on [ 1 ] . A later variant replaces the softmax with a pairwise sigmoid loss that does not require a global view of the batch’s pairwise similarities for normalisation, and the authors report training a model to 84.5% ImageNet zero-shot accuracy in two days on four TPUv4 chips, while also finding that the benefit of larger batches…
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 surrounding passage
- [1] Learning Transferable Visual Models From Natural Language Supervision ↗
- [6] Sigmoid Loss for Language Image Pre-Training ↗
These citations provide research context; check each source for the exact claim it supports.