Automated Persona Vector Extraction Pipeline

Entities in the same semantic neighborhood but without a typed relation to this one — candidates for new edges or unrecognized duplicates.

• Persona Vectorconcept0.800
  A linear direction in a language model's activation space that encodes a specific personality trait, enabling monitoring and control of that trait
• Role Vector Extractionmethod0.784
  Pipeline for extracting mean post-MLP residual stream activations from model responses under persona-specific system prompts to produce role vectors
• Persona Vectors (Chen et al.)framework0.771
  Prior framework for monitoring and controlling character traits in LLMs via activation directions; this paper extends it to 275 roles
• Persona vectors as diagnostic instrumentconcept0.767
  The paper's reframing: persona vectors read as signals of internal model organization rather than as behavioral controls
• Persona Vector Arithmeticconcept0.763
  Compositional combination of persona vectors via algebraic operations on activation directions
• Persona Vector Transition Layerconcept0.747
  Specific attention layer where persona representations undergo sharp directional shift and stabilize, identified via cosine similarity heatmaps
• What dimensions of persona are not captured by our extracted role vectors, and how complete is the current persona space mapping?question0.740
  Limitation question motivating future work on persona elicitation strategies
• Persona vectors extracted from base pretraining checkpoints steer fully post-trained OLMo-3-7B-Instructfinding0.738
  Shows persona directions persist through all alignment stages, answering key part of RQ2