Pith Number

pith:RAVUVTYB

pith:2012:RAVUVTYBR5DLSGSTIF76JM3XBH

not attested not anchored not stored refs pending

Collaborative Filtering via Group-Structured Dictionary Learning

Andras Lorincz, Barnabas Poczos, Zoltan Szabo

arxiv:1201.0341 v1 · 2012-01-01 · math.OC · cs.LG · math.ST · stat.ML · stat.TH

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{RAVUVTYBR5DLSGSTIF76JM3XBH}

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	2026-05-18T04:00:38.997587Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

882b4acf018f46b91a53417fe4b37709ea72734db6bcfecb14cc46545cff27fa

Aliases

arxiv: 1201.0341 · arxiv_version: 1201.0341v1 · doi: 10.48550/arxiv.1201.0341 · pith_short_12: RAVUVTYBR5DL · pith_short_16: RAVUVTYBR5DLSGST · pith_short_8: RAVUVTYB

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/RAVUVTYBR5DLSGSTIF76JM3XBH \
  | 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: 882b4acf018f46b91a53417fe4b37709ea72734db6bcfecb14cc46545cff27fa

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ab5aba6bc6f89b7f86864c99be9757ac7366235cdd2ea5d323094aad9856e7d2",
    "cross_cats_sorted": [
      "cs.LG",
      "math.ST",
      "stat.ML",
      "stat.TH"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2012-01-01T09:05:33Z",
    "title_canon_sha256": "b2b1d5506f3ce15d3e18ab70b52dd0ee55c3c406c16f787c6fa43504ffe38a0d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1201.0341",
    "kind": "arxiv",
    "version": 1
  }
}