Pith Number

pith:2Q7ZOWBJ

pith:2019:2Q7ZOWBJQG7EQNUESQPB2V7VKZ

not attested not anchored not stored refs pending

Joint Neural Collaborative Filtering for Recommender Systems

Fei Cai, Honghui Chen, Maarten de Rijke, Wanyu Chen

arxiv:1907.03459 v2 · 2019-07-08 · 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{2Q7ZOWBJQG7EQNUESQPB2V7VKZ}

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	2026-05-17T23:41:00.439586Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d43f97582981be483684941e1d57f556742a1d75a64c2a990e9932837778575c

Aliases

arxiv: 1907.03459 · arxiv_version: 1907.03459v2 · doi: 10.48550/arxiv.1907.03459 · pith_short_12: 2Q7ZOWBJQG7E · pith_short_16: 2Q7ZOWBJQG7EQNUE · pith_short_8: 2Q7ZOWBJ

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/2Q7ZOWBJQG7EQNUESQPB2V7VKZ \
  | 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: d43f97582981be483684941e1d57f556742a1d75a64c2a990e9932837778575c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ebfbca4ff4e35325fcd5e4a85ebf7d61ae90d08026d06da9aaa6df36bbf5bb10",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IR",
    "submitted_at": "2019-07-08T08:44:33Z",
    "title_canon_sha256": "cb47c372464205dce51c9652bfb1ad7525eaeaf5ef6cd3bc957877e7199b8151"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1907.03459",
    "kind": "arxiv",
    "version": 2
  }
}