Pith Number

pith:V2MSAUWF

pith:2019:V2MSAUWFHPOBCRYK5RVQXGASFH

not attested not anchored not stored refs pending

Compositional Coding for Collaborative Filtering

Chenghao Liu, Jianling Sun, Steven C.H. Hoi, Tao Lu, Xin Wang, Zhiyong Cheng

arxiv:1905.03752 v1 · 2019-05-09 · cs.IR · cs.LG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{V2MSAUWFHPOBCRYK5RVQXGASFH}

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	2026-05-17T23:46:36.768174Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ae992052c53bdc11470aec6b0b981229c0b3c952f84277d8009589f0d815de7b

Aliases

arxiv: 1905.03752 · arxiv_version: 1905.03752v1 · doi: 10.48550/arxiv.1905.03752 · pith_short_12: V2MSAUWFHPOB · pith_short_16: V2MSAUWFHPOBCRYK · pith_short_8: V2MSAUWF

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/V2MSAUWFHPOBCRYK5RVQXGASFH \
  | 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: ae992052c53bdc11470aec6b0b981229c0b3c952f84277d8009589f0d815de7b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0b4e7124022d370967eb4dc59bd3bd2f8b60765c1a9ebd30dfda5a40e6dcb58b",
    "cross_cats_sorted": [
      "cs.LG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IR",
    "submitted_at": "2019-05-09T16:57:27Z",
    "title_canon_sha256": "4c439b7696080ec76cf2cb5facee7e0d37085582845093699a491d2952009bfe"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1905.03752",
    "kind": "arxiv",
    "version": 1
  }
}