Pith Number

pith:KH2V6UDP

pith:2021:KH2V6UDPODPI6R67WSFHVBQPKD

not attested not anchored not stored refs pending

Keyphrase Generation with Fine-Grained Evaluation-Guided Reinforcement Learning

Jiacheng Ye, Qi Zhang, Xipeng Qiu, Yichao Luo, Yige Xu

arxiv:2104.08799 v2 · 2021-04-18 · cs.CL

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{KH2V6UDPODPI6R67WSFHVBQPKD}

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	2026-07-05T03:13:03.125055Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

51f55f506f70de8f47dfb48a7a860f50d2d3717a3e508ca1d7a7df6e11b1be62

Aliases

arxiv: 2104.08799 · arxiv_version: 2104.08799v2 · doi: 10.48550/arxiv.2104.08799 · pith_short_12: KH2V6UDPODPI · pith_short_16: KH2V6UDPODPI6R67 · pith_short_8: KH2V6UDP

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/KH2V6UDPODPI6R67WSFHVBQPKD \
  | 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: 51f55f506f70de8f47dfb48a7a860f50d2d3717a3e508ca1d7a7df6e11b1be62

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9597da02d1b344bc05f551319f0673b6c70fc88d3e604381600d4452f9cd4bf7",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CL",
    "submitted_at": "2021-04-18T10:13:46Z",
    "title_canon_sha256": "64fef46a5a1fc1a32b9331dc6e43ab6dc35d46f8b78e8bcc877632be0a90d674"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2104.08799",
    "kind": "arxiv",
    "version": 2
  }
}