Pith Number

pith:EAM7ROYM

pith:2019:EAM7ROYM7UGMM3YMIHC6UFPRLJ

not attested not anchored not stored refs pending

Learning from Sets of Items in Recommender Systems

F.Maxwell Harper, George Karypis, Mohit Sharma

arxiv:1904.12643 v1 · 2019-04-22 · cs.IR · cs.LG · stat.ML

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{EAM7ROYM7UGMM3YMIHC6UFPRLJ}

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	2026-05-17T23:47:34.472983Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2019f8bb0cfd0cc66f0c41c5ea15f15a572e5ee148de3fa9b1b1470d3064fc4f

Aliases

arxiv: 1904.12643 · arxiv_version: 1904.12643v1 · doi: 10.48550/arxiv.1904.12643 · pith_short_12: EAM7ROYM7UGM · pith_short_16: EAM7ROYM7UGMM3YM · pith_short_8: EAM7ROYM

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/EAM7ROYM7UGMM3YMIHC6UFPRLJ \
  | 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: 2019f8bb0cfd0cc66f0c41c5ea15f15a572e5ee148de3fa9b1b1470d3064fc4f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c5832e3f90414f5e89c8ecc518fcb14424c335e6a418f5b65728f6c3955ad33e",
    "cross_cats_sorted": [
      "cs.LG",
      "stat.ML"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IR",
    "submitted_at": "2019-04-22T04:42:12Z",
    "title_canon_sha256": "c6aa33b45ebccfb1406c854660a808f86dfd3bb979f7175b272ac2592a2dcac6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1904.12643",
    "kind": "arxiv",
    "version": 1
  }
}