Pith Number

pith:6RTLUQDU

pith:2026:6RTLUQDUE5IBHZTXXJWBQWPPTP

not attested not anchored not stored refs pending

Stable Behavior, Limited Variation: Persona Validity in LLM Agents for Urban Sentiment Perception

Daniel Silver, Neemias B da Silva, Rodrigo Minetto, Thiago H Silva

Simple persona prompting in multimodal LLMs produces stable urban sentiment judgments but limited variation across personas, often matched by unprompted models.

arxiv:2604.28048 v2 · 2026-04-30 · cs.CL · cs.SI

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\usepackage{pith}
\pithnumber{6RTLUQDUE5IBHZTXXJWBQWPPTP}

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Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Claims

C1strongest claim

simple label-based persona prompting may add limited annotation value in this setting

C2weakest assumption

That the chosen persona descriptions and the PerceptSent image set together produce a representative sample of the perceptual variation that actually exists across real human demographic and personality groups.

C3one line summary

Persona prompting creates stable but minimally differentiated LLM behavior on urban sentiment tasks, with a no-persona baseline frequently matching or exceeding persona-conditioned agreement to human labels.

Receipt and verification

First computed	2026-05-25T02:01:21.410652Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f466ba4074275013e677ba6c1859ef9bfbbe9278f7e0047f05b1287697e5cfb3

Aliases

arxiv: 2604.28048 · arxiv_version: 2604.28048v2 · doi: 10.48550/arxiv.2604.28048 · pith_short_12: 6RTLUQDUE5IB · pith_short_16: 6RTLUQDUE5IBHZTX · pith_short_8: 6RTLUQDU

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/6RTLUQDUE5IBHZTXXJWBQWPPTP \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: f466ba4074275013e677ba6c1859ef9bfbbe9278f7e0047f05b1287697e5cfb3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c8d51020c18e132b71aa37003221d50a3c964fb42303354916e95341a516b25c",
    "cross_cats_sorted": [
      "cs.SI"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CL",
    "submitted_at": "2026-04-30T15:59:11Z",
    "title_canon_sha256": "ac533d995f0f36b4e0d3d37e38946a079e8daab24a19e6fb4ac6a722a8b61a7b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2604.28048",
    "kind": "arxiv",
    "version": 2
  }
}