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Equation 9 · Part 2 · Building a Multimodal AI Application That Actually Uses Its Inputs

subscript

Δimage\Delta_{\mathrm{image}}
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.

The passage around this formula

Slice the ablation results by task subtype , because an aggregate delta hides subtypes where the shortcut is total. A visual question answering system can show a healthy aggregate Δimage\Delta_{\mathrm{image}} while still answering every counting question from the question text alone.

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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

These citations provide research context; check each source for the exact claim it supports.