Pith Number

pith:56VBJMVF

pith:2023:56VBJMVFMR662SP4WMDCGAWAWO

not attested not anchored not stored refs pending

Perturbation-based QE: An Explainable, Unsupervised Word-level Quality Estimation Method for Blackbox Machine Translation

Jan Niehues, Tu Anh Dinh

arxiv:2305.07457 v2 · 2023-05-12 · 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{56VBJMVFMR662SP4WMDCGAWAWO}

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	2026-07-05T06:30:31.076839Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

efaa14b2a5647ded49fcb3062302c0b38ff247d5fcda6476e2b8b59cf8e833b6

Aliases

arxiv: 2305.07457 · arxiv_version: 2305.07457v2 · doi: 10.48550/arxiv.2305.07457 · pith_short_12: 56VBJMVFMR66 · pith_short_16: 56VBJMVFMR662SP4 · pith_short_8: 56VBJMVF

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/56VBJMVFMR662SP4WMDCGAWAWO \
  | 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: efaa14b2a5647ded49fcb3062302c0b38ff247d5fcda6476e2b8b59cf8e833b6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4ef17664533fa7c74e37aae5829e5138db5de32dcf3678febadfff5d2414f334",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by-sa/4.0/",
    "primary_cat": "cs.CL",
    "submitted_at": "2023-05-12T13:10:57Z",
    "title_canon_sha256": "0dadd5ba28738dafa458f2a9f1c0af5657341be8b67aab7adbbb23d19fb44fb2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2305.07457",
    "kind": "arxiv",
    "version": 2
  }
}