Pith Number

pith:C2OK3ZCW

pith:2021:C2OK3ZCWAJ77WDXRRWKFVRTE5A

not attested not anchored not stored refs pending

Problems and Countermeasures in Natural Language Processing Evaluation

Baobao Chang, Qingxiu Dong, Weidong Zhan, Zhifang Sui

arxiv:2104.09712 v1 · 2021-04-20 · 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{C2OK3ZCWAJ77WDXRRWKFVRTE5A}

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	2026-07-05T02:33:36.300053Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

169cade456027ffb0ef18d945ac664e81829d64d907993db6a198ab4a0244112

Aliases

arxiv: 2104.09712 · arxiv_version: 2104.09712v1 · doi: 10.48550/arxiv.2104.09712 · pith_short_12: C2OK3ZCWAJ77 · pith_short_16: C2OK3ZCWAJ77WDXR · pith_short_8: C2OK3ZCW

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/C2OK3ZCWAJ77WDXRRWKFVRTE5A \
  | 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: 169cade456027ffb0ef18d945ac664e81829d64d907993db6a198ab4a0244112

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e21ce3505e9e71474f5da0e0d4b6d29e6e7afa60d9c37ffc77282644a12c6e7a",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by-sa/4.0/",
    "primary_cat": "cs.CL",
    "submitted_at": "2021-04-20T01:35:16Z",
    "title_canon_sha256": "2f222b51fa613c1642c71fcc0d587d312b3cac42bdbfcac598e9b397b9fddd77"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2104.09712",
    "kind": "arxiv",
    "version": 1
  }
}