Pith Number

pith:XKLFQD37

pith:2011:XKLFQD3726L2RUPKB2HABXUJEN

not attested not anchored not stored refs pending

Feature-Based Matrix Factorization

Qiuxia Lu, Tianqi Chen, Weinan Zhang, Yong Yu, Zhao Zheng

arxiv:1109.2271 v3 · 2011-09-11 · cs.AI · 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{XKLFQD3726L2RUPKB2HABXUJEN}

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	2026-05-18T04:05:38.326428Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ba96580f7fd797a8d1ea0e8e00de892369456517dc35a420a6c4170d35a433d8

Aliases

arxiv: 1109.2271 · arxiv_version: 1109.2271v3 · doi: 10.48550/arxiv.1109.2271 · pith_short_12: XKLFQD3726L2 · pith_short_16: XKLFQD3726L2RUPK · pith_short_8: XKLFQD37

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/XKLFQD3726L2RUPKB2HABXUJEN \
  | 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: ba96580f7fd797a8d1ea0e8e00de892369456517dc35a420a6c4170d35a433d8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "76d27143f79f22508620f9122e9da5c6f6ecd4b5bfab294fecca27a19689d20e",
    "cross_cats_sorted": [
      "cs.IR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.AI",
    "submitted_at": "2011-09-11T01:10:06Z",
    "title_canon_sha256": "6171f76f0ad18bb7be0753744d0b84ba130a1696756c371b41595b93aa780492"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1109.2271",
    "kind": "arxiv",
    "version": 3
  }
}