Pith Number

pith:QXNHJWHL

pith:2021:QXNHJWHLNN6MRGEKAJRRAGPX4P

not attested not anchored not stored refs pending

Empirical Study of Named Entity Recognition Performance Using Distribution-aware Word Embedding

Qi Zhao, Xin Chen, Xinyang Liu

arxiv:2109.01636 v4 · 2021-09-03 · 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{QXNHJWHLNN6MRGEKAJRRAGPX4P}

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	2026-07-05T07:35:57.708399Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

85da74d8eb6b7cc8988a02631019f7e3cfa3646ff08ca140f91973c32ef37d7c

Aliases

arxiv: 2109.01636 · arxiv_version: 2109.01636v4 · doi: 10.48550/arxiv.2109.01636 · pith_short_12: QXNHJWHLNN6M · pith_short_16: QXNHJWHLNN6MRGEK · pith_short_8: QXNHJWHL

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/QXNHJWHLNN6MRGEKAJRRAGPX4P \
  | 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: 85da74d8eb6b7cc8988a02631019f7e3cfa3646ff08ca140f91973c32ef37d7c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4490b330fc777319b5ae7b565ba3481bb641da3a0689d4c5714365266a6ba2f6",
    "cross_cats_sorted": [
      "cs.LG"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.CL",
    "submitted_at": "2021-09-03T17:28:04Z",
    "title_canon_sha256": "930a05afcbc3932e2b0c15aae00f265d42a8983b4b9cdf843c738f4895ee3640"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2109.01636",
    "kind": "arxiv",
    "version": 4
  }
}