Equation 9 · Part 2 · Claude, From First Principles: Training, Constitutional Methods, and What Actually Shapes a Response
Symbol θ
What this part means
θ is a part of this expression. Its role is fixed by the surrounding article and by the operations shown in the formula.
Its job in the formula
θ 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 θ→Article meaning
The passage around this formula
Constitutional AI is Anthropic’s best-documented departure from plain RLHF, and it is worth being precise about exactly what it changes, because the method is easy either to overstate or to wave at vaguely. Bai and fifty co-authors describe it as a two-phase procedure layered onto the pipeline above [ 1 ] . In the first phase, the model is prompted to critique its own draft response against one principle drawn from a written list, then to revise the response in light of that critique; those revised responses become supervised fine-tuning data, so the model that comes out the other side has been trained partly on its own corrected output rather than solely on external demonstrations. In the…
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Sources cited in the surrounding passage
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