Pith Number

pith:5KZMSILN

pith:2018:5KZMSILN7E7OZAPBT7ZPARTIIX

not attested not anchored not stored refs pending

A multi-level collaborative filtering method that improves recommendations

Christos K. Georgiadis, Nikolaos Polatidis

arxiv:1804.08891 v1 · 2018-04-24 · 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{5KZMSILN7E7OZAPBT7ZPARTIIX}

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	2026-05-18T00:17:36.967603Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

eab2c9216df93eec81e19ff2f0466845e53a36a6ca1625151f17a7970fa1665c

Aliases

arxiv: 1804.08891 · arxiv_version: 1804.08891v1 · doi: 10.48550/arxiv.1804.08891 · pith_short_12: 5KZMSILN7E7O · pith_short_16: 5KZMSILN7E7OZAPB · pith_short_8: 5KZMSILN

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/5KZMSILN7E7OZAPBT7ZPARTIIX \
  | 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: eab2c9216df93eec81e19ff2f0466845e53a36a6ca1625151f17a7970fa1665c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "01da391e1a7257460a2b8637f638d8605bb20fa3e865d3d9c7422bfbcfc32a13",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IR",
    "submitted_at": "2018-04-24T08:20:45Z",
    "title_canon_sha256": "21d93aa92ccc2d89df5785c9a101ef10b002a50f8de2fa8b9b93ec6d038d6aca"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1804.08891",
    "kind": "arxiv",
    "version": 1
  }
}