Pith Number

pith:5ZGDU5NA

pith:2022:5ZGDU5NAPGVUX64Q4U6Q63QMXO

not attested not anchored not stored refs pending

Modeling and Leveraging Prerequisite Context in Recommendation

Hengchang Hu, Liangming Pan, Min-Yen Kan, Yiding Ran

arxiv:2209.11471 v1 · 2022-09-23 · 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{5ZGDU5NAPGVUX64Q4U6Q63QMXO}

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.

Cited by

1 paper in Pith

Inferring Prerequisite Knowledge Concepts in Educational Knowledge Graphs: A Multi-criteria Approach

Receipt and verification

First computed	2026-07-05T05:00:21.175271Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ee4c3a75a079ab4bfb90e53d0f6e0cbba7448d9275981fe4615ca6247903477b

Aliases

arxiv: 2209.11471 · arxiv_version: 2209.11471v1 · doi: 10.48550/arxiv.2209.11471 · pith_short_12: 5ZGDU5NAPGVU · pith_short_16: 5ZGDU5NAPGVUX64Q · pith_short_8: 5ZGDU5NA

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/5ZGDU5NAPGVUX64Q4U6Q63QMXO \
  | 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: ee4c3a75a079ab4bfb90e53d0f6e0cbba7448d9275981fe4615ca6247903477b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b233928c4f2f1c783646e37ec5093d33b1f6ee4b1107adb60554952377645e4c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IR",
    "submitted_at": "2022-09-23T08:21:47Z",
    "title_canon_sha256": "c02110e935d90f71e494416ea1206cc8e50d6e2e5efb6044dae5642d6707ac2a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2209.11471",
    "kind": "arxiv",
    "version": 1
  }
}