Pith Number

pith:6ZCD2YZ6

pith:2019:6ZCD2YZ6P2V6YABAFSO6Y3KBZL

not attested not anchored not stored refs pending

Unsupervised Natural Question Answering with a Small Model

Martin Andrews, Sam Witteveen

arxiv:1911.08340 v1 · 2019-11-19 · cs.CL · cs.AI · 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{6ZCD2YZ6P2V6YABAFSO6Y3KBZL}

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	2026-07-05T00:20:56.513805Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f6443d633e7eabec00202c9dec6d41cad50de2cb2024cce54b48b5f72f76ec8a

Aliases

arxiv: 1911.08340 · arxiv_version: 1911.08340v1 · doi: 10.48550/arxiv.1911.08340 · pith_short_12: 6ZCD2YZ6P2V6 · pith_short_16: 6ZCD2YZ6P2V6YABA · pith_short_8: 6ZCD2YZ6

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/6ZCD2YZ6P2V6YABAFSO6Y3KBZL \
  | 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: f6443d633e7eabec00202c9dec6d41cad50de2cb2024cce54b48b5f72f76ec8a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "61942de47d2a0360ccd9b35e6d32b38d4c679b024eefedeeb50c7ee73b0fb079",
    "cross_cats_sorted": [
      "cs.AI",
      "cs.IR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CL",
    "submitted_at": "2019-11-19T15:18:39Z",
    "title_canon_sha256": "94c4a3bb1334fb18885a97c2f05cd124b75dcfe1fdc30c3a9b758b31e19dca27"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1911.08340",
    "kind": "arxiv",
    "version": 1
  }
}