Pith Number

pith:OJ2NKVYX

pith:2023:OJ2NKVYXJ5BO2LSHQPZHLPPTJ7

not attested not anchored not stored refs pending

The Impacts of Unanswerable Questions on the Robustness of Machine Reading Comprehension Models

Matt Kretchmar, Phong Nguyen-Thuan Do, Son Quoc Tran, Uyen Le

arxiv:2302.00094 v1 · 2023-01-31 · cs.AI

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{OJ2NKVYXJ5BO2LSHQPZHLPPTJ7}

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	2026-07-05T05:37:59.394597Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7274d557174f42ed2e4783f275bdf34fe992ea7f168e5b1ea0eed4d1753175fe

Aliases

arxiv: 2302.00094 · arxiv_version: 2302.00094v1 · doi: 10.48550/arxiv.2302.00094 · pith_short_12: OJ2NKVYXJ5BO · pith_short_16: OJ2NKVYXJ5BO2LSH · pith_short_8: OJ2NKVYX

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/OJ2NKVYXJ5BO2LSHQPZHLPPTJ7 \
  | 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: 7274d557174f42ed2e4783f275bdf34fe992ea7f168e5b1ea0eed4d1753175fe

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "35ff34d13153e01c1e38b49c515429b4a5c6f9dea096208a34de4bce060b2b2c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.AI",
    "submitted_at": "2023-01-31T20:51:14Z",
    "title_canon_sha256": "9f83e83181e2c9ab724476d07a9c2eecb3d1b60e8ce331a9d52e3a17a0fd4768"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2302.00094",
    "kind": "arxiv",
    "version": 1
  }
}