Pith Number

pith:75QOMVP4

pith:2025:75QOMVP46II2W7YV4NGRM4OFZ3

not attested not anchored not stored refs pending

Are Information Retrieval Approaches Good at Harmonising Longitudinal Survey Questions in Social Science?

Jon Johnson, Suparna De, Wing Yan Li, ZeQiang Wang

arxiv:2504.20679 v2 · 2025-04-29 · cs.CL · 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{75QOMVP46II2W7YV4NGRM4OFZ3}

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	2026-07-05T11:32:28.607098Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ff60e655fcf211ab7f15e34d1671c5cee54d62692c0f94b3db9f93fb1953949d

Aliases

arxiv: 2504.20679 · arxiv_version: 2504.20679v2 · doi: 10.48550/arxiv.2504.20679 · pith_short_12: 75QOMVP46II2 · pith_short_16: 75QOMVP46II2W7YV · pith_short_8: 75QOMVP4

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/75QOMVP46II2W7YV4NGRM4OFZ3 \
  | 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: ff60e655fcf211ab7f15e34d1671c5cee54d62692c0f94b3db9f93fb1953949d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "af5e58564eb83d65fefbbb8dcf32a3898e5e78bd213d1cb4eced34f4d9eee16f",
    "cross_cats_sorted": [
      "cs.IR"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.CL",
    "submitted_at": "2025-04-29T12:00:33Z",
    "title_canon_sha256": "789ef8f7638f7466826b551dac4c3f38500b0dac10de9a2778cc5850b8695f67"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2504.20679",
    "kind": "arxiv",
    "version": 2
  }
}