Pith Number

pith:76CBTVUL

pith:2023:76CBTVULSR5DC2SC6ZRUSJ4ROY

not attested not anchored not stored refs pending

Hierarchical Matrix Factorization for Interpretable Collaborative Filtering

Kai Sugahara, Kazushi Okamoto

arxiv:2311.13277 v2 · 2023-11-22 · 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{76CBTVULSR5DC2SC6ZRUSJ4ROY}

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	2026-07-05T07:53:32.097340Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ff8419d68b947a316a42f663492791762fe2859ada3aa96802fc786702d3653f

Aliases

arxiv: 2311.13277 · arxiv_version: 2311.13277v2 · doi: 10.48550/arxiv.2311.13277 · pith_short_12: 76CBTVULSR5D · pith_short_16: 76CBTVULSR5DC2SC · pith_short_8: 76CBTVUL

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/76CBTVULSR5DC2SC6ZRUSJ4ROY \
  | 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: ff8419d68b947a316a42f663492791762fe2859ada3aa96802fc786702d3653f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e11b8998bcb2dca7b213e04b8b44e0dc94707658dbb8600c74c94fbe51b23052",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IR",
    "submitted_at": "2023-11-22T09:53:57Z",
    "title_canon_sha256": "badb18f2a6a09dcf41a3ade6edee2f1f0c9d5c693d37a5d5c6cf0658ed3d4807"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2311.13277",
    "kind": "arxiv",
    "version": 2
  }
}