Pith Number

pith:4BBDK6YL

pith:2012:4BBDK6YLLVW533FJCBVZSZ3NRT

not attested not anchored not stored refs pending

Incremental Collaborative Filtering Considering Temporal Effects

Hu Wu, Jingzheng Wu, Xiaofeng Liao, Yongji Wang

arxiv:1203.5415 v1 · 2012-03-24 · 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{4BBDK6YLLVW533FJCBVZSZ3NRT}

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	2026-05-18T03:59:15.156423Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e042357b0b5d6dddeca9106b99676d8ce3cf22cb469b05305a4e2be44e338433

Aliases

arxiv: 1203.5415 · arxiv_version: 1203.5415v1 · doi: 10.48550/arxiv.1203.5415 · pith_short_12: 4BBDK6YLLVW5 · pith_short_16: 4BBDK6YLLVW533FJ · pith_short_8: 4BBDK6YL

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/4BBDK6YLLVW533FJCBVZSZ3NRT \
  | 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: e042357b0b5d6dddeca9106b99676d8ce3cf22cb469b05305a4e2be44e338433

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fab804ac42495602cd4472de78a1eeed25ca8f7204c8a60dad4af7fea61b8740",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IR",
    "submitted_at": "2012-03-24T14:14:00Z",
    "title_canon_sha256": "4a8f7bf5e051e526a59b286767636b50fc8d52d06a8aabe0ce9cccc6b3725e01"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1203.5415",
    "kind": "arxiv",
    "version": 1
  }
}