Pith Number

pith:S7B4NEQ7

pith:2020:S7B4NEQ72QXEBWDQPG22MQVJEV

not attested not anchored not stored refs pending

MaP: A Matrix-based Prediction Approach to Improve Span Extraction in Machine Reading Comprehension

Huaishao Luo, Linjun Shou, Ming Gong, Tianrui Li, Yu Shi

arxiv:2009.14348 v1 · 2020-09-29 · 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{S7B4NEQ72QXEBWDQPG22MQVJEV}

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	2026-07-05T01:39:18.374075Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

97c3c6921fd42e40d87079b5a642a92546cf46733741f3d5cfa727b5184d0b4d

Aliases

arxiv: 2009.14348 · arxiv_version: 2009.14348v1 · doi: 10.48550/arxiv.2009.14348 · pith_short_12: S7B4NEQ72QXE · pith_short_16: S7B4NEQ72QXEBWDQ · pith_short_8: S7B4NEQ7

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/S7B4NEQ72QXEBWDQPG22MQVJEV \
  | 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: 97c3c6921fd42e40d87079b5a642a92546cf46733741f3d5cfa727b5184d0b4d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "671b0e63951759e59d9e3468e68b1aa304d1a45cea8004d264b09914d0989fc7",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CL",
    "submitted_at": "2020-09-29T23:53:50Z",
    "title_canon_sha256": "b0045d5250b0414ad7aabb2d79618c6a8402503a420afed2a60fdb8978ffd348"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2009.14348",
    "kind": "arxiv",
    "version": 1
  }
}