Pith Number

pith:RO4OTMGE

pith:2019:RO4OTMGEGP6P2NYA57K7EFHWSS

not attested not anchored not stored refs pending

Machine Reading Comprehension for Answer Re-Ranking in Customer Support Chatbots

Ivan Koychev, Momchil Hardalov, Preslav Nakov

arxiv:1902.04574 v2 · 2019-02-12 · 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{RO4OTMGEGP6P2NYA57K7EFHWSS}

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	2026-05-17T23:52:35.974876Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8bb8e9b0c433fcfd3700efd5f214f694a1bfaeba146e39a8e744544699ad867d

Aliases

arxiv: 1902.04574 · arxiv_version: 1902.04574v2 · doi: 10.48550/arxiv.1902.04574 · pith_short_12: RO4OTMGEGP6P · pith_short_16: RO4OTMGEGP6P2NYA · pith_short_8: RO4OTMGE

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/RO4OTMGEGP6P2NYA57K7EFHWSS \
  | 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: 8bb8e9b0c433fcfd3700efd5f214f694a1bfaeba146e39a8e744544699ad867d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c693a0b74f1d5bbe0d8e7d2d62b8895084d0bc31ef70cbb59decd38bff609d78",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.CL",
    "submitted_at": "2019-02-12T15:49:40Z",
    "title_canon_sha256": "5ecb68ab6dae3e70a206c6e80a4053b5e5cbdb2cec3946ff8246da1148a31924"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1902.04574",
    "kind": "arxiv",
    "version": 2
  }
}