Basis Vectors in Persona Space

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Many personas seem to be somewhat linear, in that we can use activation steering to encourage them. But surely many of these decompose into the same component parts. Can we look at documents with a bunch of different personas, find a bunch of persona vectors, and then do PCA to start investigating the parts of persona that are most primary in the residual stream geometry?

llms mechinterp persona Implemented:https://github.com/Hypogenic-AI/basis-vectors-persona-03ae-claude Implemented:https://github.com/Hypogenic-AI/basis-vectors-persona-7acf-codex Implemented:https://github.com/Hypogenic-AI/basis-vectors-persona-4079-gemini

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If you are inspired by this idea, you can reach out to the authors for collaboration or cite it:

@misc{holtzman-basis-vectors-in-2026,
  author = {Holtzman, Ari},
  title = {Basis Vectors in Persona Space},
  year = {2026},
  url = {https://hypogenic.ai/ideahub/idea/mYaGsOnWVhhGF2AZdzgg}
}

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