Equation 33 · How a Model Actually Gets Small Enough to Run on a Phone
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Symbol x
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The formula above needs one number, , and the choice of what “one” applies to matters more than it looks. A single scale for an entire weight tensor is per-tensor quantization: cheap to store, one number per layer, but forced to size itself to whichever single row or output channel happens to have the largest values, wasting resolution on every other channel that has a smaller range.
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