Pith Number

pith:NXLED3WU

pith:2019:NXLED3WUERZVMAHCUKH2NPKKZ3

not attested not anchored not stored refs pending

BERT with History Answer Embedding for Conversational Question Answering

Chen Qu, Liu Yang, Minghui Qiu, Mohit Iyyer, W. Bruce Croft, Yongfeng Zhang

arxiv:1905.05412 v2 · 2019-05-14 · cs.IR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{NXLED3WUERZVMAHCUKH2NPKKZ3}

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	2026-07-05T00:15:04.776648Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6dd641eed424735600e2a28fa6bd4acef5d7694fe6a21e66c6420f647317b9b8

Aliases

arxiv: 1905.05412 · arxiv_version: 1905.05412v2 · doi: 10.48550/arxiv.1905.05412 · pith_short_12: NXLED3WUERZV · pith_short_16: NXLED3WUERZVMAHC · pith_short_8: NXLED3WU

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/NXLED3WUERZVMAHCUKH2NPKKZ3 \
  | 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: 6dd641eed424735600e2a28fa6bd4acef5d7694fe6a21e66c6420f647317b9b8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b04e6a415d810c5fd418129ee2314d8a95750d1986cd1a1404ff228a12d28a33",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IR",
    "submitted_at": "2019-05-14T06:40:38Z",
    "title_canon_sha256": "451b5c4b0420aa2a55fe7072e47a45b02f5451dab30b3b03f01809aeaeed7827"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1905.05412",
    "kind": "arxiv",
    "version": 2
  }
}