Pith Number

pith:C4RF3T5Y

pith:2026:C4RF3T5YIQPSUTQ2TLHAYZOXQR

not attested not anchored not stored refs pending

CREG: Compass Relational Evidence Graph for Characterizing Directional Structure in VLM Spatial-Reasoning Attribution

Heqing Du, Kaizhen Tan, Yang Feng

Box-only geometry achieves over 30 degrees lower directional alignment error than current VLM attribution methods on spatial tasks.

arxiv:2603.20475 v4 · 2026-03-20 · cs.CV

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\usepackage{pith}
\pithnumber{C4RF3T5YIQPSUTQ2TLHAYZOXQR}

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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

Across three spatial-relation benchmarks, box-only geometry achieves Direction Alignment Error more than 30 degrees lower than current model-based attribution methods, leaving a substantial gap between attribution structure and simple target localization.

C2weakest assumption

That the reference-centered compass distribution and Direction Alignment Error metric isolate directional evidence structure from confounding image layout biases without introducing metric-specific artifacts.

C3one line summary

CREG diagnostic shows box-only geometry achieves over 30 degrees lower Direction Alignment Error than model-based attributions across spatial benchmarks, exposing gaps between task accuracy and directional evidence organization.

Formal links

2 machine-checked theorem links

Receipt and verification

First computed	2026-06-23T02:13:22.844073Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

17225dcfb8441f2a4e1a9ace0c65d78445874edcd8a41571e5115b5badc4cf80

Aliases

arxiv: 2603.20475 · arxiv_version: 2603.20475v4 · doi: 10.48550/arxiv.2603.20475 · pith_short_12: C4RF3T5YIQPS · pith_short_16: C4RF3T5YIQPSUTQ2 · pith_short_8: C4RF3T5Y

Agent API

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Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/C4RF3T5YIQPSUTQ2TLHAYZOXQR \
  | 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: 17225dcfb8441f2a4e1a9ace0c65d78445874edcd8a41571e5115b5badc4cf80

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4fe58aeaf505077c456d38657beddb52f33b50853044ea52400144ce55ce4f31",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2026-03-20T20:09:19Z",
    "title_canon_sha256": "e8c18a022c479d300613388e27bda2c848a6eb032af950a52e302fd44304aeba"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2603.20475",
    "kind": "arxiv",
    "version": 4
  }
}