Equation 3 · Part 6 · Edge AI Electronics and Sensor Systems: A First-Principles Introduction
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
Because a watt is a joule per second, measured this way is numerically the same quantity as operations delivered per joule. That equivalence matters because it converts a throughput specification into an energy budget for a single inference: . where is the number of operations one inference requires. This is the arithmetic that determines whether a given model can run a given number of times on a given battery before it needs replacing or recharging, and it is why a headline TOPS figure on a datasheet, quoted without the power draw it was measured at, tells a reader almost nothing about whether a part is suitable for a battery-powered product.
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
- [5] Eyeriss: An Energy-Efficient Reconfigurable Accelerator for Deep Convolutional Neural Networks ↗
- [3] Quantization and Training of Neural Networks for Efficient Integer-Arithmetic-Only Inference ↗
- [10] MCUNet: Tiny Deep Learning on IoT Devices ↗
These citations provide research context; check each source for the exact claim it supports.