Pith Number

pith:A7XYV4UZ

pith:2026:A7XYV4UZPFBH4QR7BSJGVJASHZ

not attested not anchored not stored refs pending

SplAttN: Bridging 2D and 3D with Gaussian Soft Splatting and Attention for Point Cloud Completion

Tianrui Li, Zhaoyang Li, Zhichao You

Differentiable Gaussian splatting replaces hard projection to prevent cross-modal entropy collapse in point cloud completion.

arxiv:2605.01466 v2 · 2026-05-02 · cs.CV · cs.LG

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\usepackage{pith}
\pithnumber{A7XYV4UZPFBH4QR7BSJGVJASHZ}

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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

SplAttN achieves state-of-the-art performance on PCN and ShapeNet-55/34. Counter-factual evaluation on KITTI reveals that while baselines degenerate into unimodal template retrievers insensitive to visual removal, SplAttN maintains a robust dependency on visual cues.

C2weakest assumption

That the performance gains and KITTI robustness stem specifically from avoiding cross-modal entropy collapse via Gaussian splatting rather than from other architectural choices or training details not isolated in the reported experiments.

C3one line summary

SplAttN replaces hard projection with Gaussian soft splatting to avoid cross-modal entropy collapse, achieving SOTA point cloud completion on PCN and ShapeNet while maintaining visual cue dependency on KITTI.

Receipt and verification

First computed	2026-05-22T01:04:04.040153Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

07ef8af29979427e423f0c926aa4123e76f20cdde83844e9de838fd5d15e2259

Aliases

arxiv: 2605.01466 · arxiv_version: 2605.01466v2 · doi: 10.48550/arxiv.2605.01466 · pith_short_12: A7XYV4UZPFBH · pith_short_16: A7XYV4UZPFBH4QR7 · pith_short_8: A7XYV4UZ

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/A7XYV4UZPFBH4QR7BSJGVJASHZ \
  | 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: 07ef8af29979427e423f0c926aa4123e76f20cdde83844e9de838fd5d15e2259

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d4c075712c8d9a0e1ad241c7fcdd23f7559686aed8e2fa3320d05fb84f06d953",
    "cross_cats_sorted": [
      "cs.LG"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2026-05-02T14:34:21Z",
    "title_canon_sha256": "12b7f36ddf31272194ba2e2f605bc194a06816fa4631be3e13c032e6511f4834"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2605.01466",
    "kind": "arxiv",
    "version": 2
  }
}