Pith Number

pith:NJABW6SY

pith:2016:NJABW6SYYO6MRK46KHEB4NQGJI

not attested not anchored not stored refs pending

Matrix Factorization Method for Decentralized Recommender Systems

Wenjie Zheng

arxiv:1604.08420 v1 · 2016-04-28 · cs.IR · cs.DC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{NJABW6SYYO6MRK46KHEB4NQGJI}

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	2026-05-18T01:16:04.031174Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6a401b7a58c3bcc8ab9e51c81e36064a086ae86b52af4ab1158968e41d8dbe23

Aliases

arxiv: 1604.08420 · arxiv_version: 1604.08420v1 · doi: 10.48550/arxiv.1604.08420 · pith_short_12: NJABW6SYYO6M · pith_short_16: NJABW6SYYO6MRK46 · pith_short_8: NJABW6SY

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/NJABW6SYYO6MRK46KHEB4NQGJI \
  | 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: 6a401b7a58c3bcc8ab9e51c81e36064a086ae86b52af4ab1158968e41d8dbe23

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7b5e3af2ebfcd492434520109a5016dc7c2e970e0a47509bc58e0a3a95d33a5b",
    "cross_cats_sorted": [
      "cs.DC"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IR",
    "submitted_at": "2016-04-28T14:01:54Z",
    "title_canon_sha256": "90b4cc322bcb2d1edc7ea3cc664cdf987190cf75fa340da91f1fd76a94f20be2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1604.08420",
    "kind": "arxiv",
    "version": 1
  }
}