Pith Number

pith:BDX66RAJ

pith:2022:BDX66RAJSOAOANGNGISGFD6TYB

not attested not anchored not stored refs pending

CEFR-Based Sentence Difficulty Annotation and Assessment

Satoru Uchida, Tomoyuki Kajiwara, Yuki Arase

arxiv:2210.11766 v1 · 2022-10-21 · 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{BDX66RAJSOAOANGNGISGFD6TYB}

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.

Cited by

1 paper in Pith

Ace-CEFR -- A Dataset for Automated Evaluation of the Linguistic Difficulty of Conversational Texts for LLM Applications

Receipt and verification

First computed	2026-07-05T05:08:57.441125Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

08efef44099380e034cd3224628fd3c05b6a84f916c6f7f8775965e172448e1a

Aliases

arxiv: 2210.11766 · arxiv_version: 2210.11766v1 · doi: 10.48550/arxiv.2210.11766 · pith_short_12: BDX66RAJSOAO · pith_short_16: BDX66RAJSOAOANGN · pith_short_8: BDX66RAJ

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/BDX66RAJSOAOANGNGISGFD6TYB \
  | 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: 08efef44099380e034cd3224628fd3c05b6a84f916c6f7f8775965e172448e1a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d9415e4b76c4ad104a23ac3e1037be7ace4bf06ea7f9f21257f7362dfca18902",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.CL",
    "submitted_at": "2022-10-21T07:03:30Z",
    "title_canon_sha256": "08df03f624f15cd906a28207c0aededbf70e74c2e96cbdad5be2c3f7653b9179"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2210.11766",
    "kind": "arxiv",
    "version": 1
  }
}