Pith Number

pith:KS25AVT3

pith:2021:KS25AVT3T5DB6DSSRSQPMNB5IP

not attested not anchored not stored refs pending

R2D2: Recursive Transformer based on Differentiable Tree for Interpretable Hierarchical Language Modeling

Gerard de Melo, Haitao Mi, Jing Zheng, Xiang Hu, Yafang Wang, Yi Su, Zujie Wen

arxiv:2107.00967 v2 · 2021-07-02 · cs.CL · cs.LG

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{KS25AVT3T5DB6DSSRSQPMNB5IP}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

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.

Receipt and verification

First computed	2026-07-05T04:01:42.200477Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

54b5d0567b9f461f0e528ca0f6343d43ca566b71d9b639e58626c8e8c7726a39

Aliases

arxiv: 2107.00967 · arxiv_version: 2107.00967v2 · doi: 10.48550/arxiv.2107.00967 · pith_short_12: KS25AVT3T5DB · pith_short_16: KS25AVT3T5DB6DSS · pith_short_8: KS25AVT3

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/KS25AVT3T5DB6DSSRSQPMNB5IP \
  | 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: 54b5d0567b9f461f0e528ca0f6343d43ca566b71d9b639e58626c8e8c7726a39

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fdd42557339174861057a66e1d96dd04319787d91ae28b958ae88f6e979aa873",
    "cross_cats_sorted": [
      "cs.LG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CL",
    "submitted_at": "2021-07-02T11:00:46Z",
    "title_canon_sha256": "746592b80db8527c996e7db84a9fdfdb7a7c2772af42303679672d62afa6c2fc"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2107.00967",
    "kind": "arxiv",
    "version": 2
  }
}