Pith Number

pith:PMD2GWEF

pith:2018:PMD2GWEFDWQTT3UOC5CIZWCXDT

not attested not anchored not stored refs pending

Collaborative Item Embedding Model for Implicit Feedback Data

Atsuhiro Takasu, Kenro Aihara, ThaiBinh Nguyen

arxiv:1805.05005 v1 · 2018-05-14 · 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{PMD2GWEFDWQTT3UOC5CIZWCXDT}

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	2026-05-18T00:16:04.098122Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7b07a358851da139ee8e17448cd8571cee1c95b9280aa2b2f8be0108d77a3977

Aliases

arxiv: 1805.05005 · arxiv_version: 1805.05005v1 · doi: 10.48550/arxiv.1805.05005 · pith_short_12: PMD2GWEFDWQT · pith_short_16: PMD2GWEFDWQTT3UO · pith_short_8: PMD2GWEF

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/PMD2GWEFDWQTT3UOC5CIZWCXDT \
  | 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: 7b07a358851da139ee8e17448cd8571cee1c95b9280aa2b2f8be0108d77a3977

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a251b276d688cea3d559e54b8618c9c34608d5a1e2ab024da54f451e6ea44ada",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IR",
    "submitted_at": "2018-05-14T03:55:03Z",
    "title_canon_sha256": "b33d7fca4cd4380aabfe6dffc412d9a83cc931c46b45cc0d3d831a557ba09417"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1805.05005",
    "kind": "arxiv",
    "version": 1
  }
}