Pith Number

pith:FQH3KPSH

pith:2018:FQH3KPSHNYPSDXSGIBVIGYQU7Q

not attested not anchored not stored refs pending

Learning Latent Features with Pairwise Penalties in Low-Rank Matrix Completion

Jian Tan, Jinfeng Xu, Kaiyi Ji, Yuejie Chi

arxiv:1802.05821 v2 · 2018-02-16 · stat.ML · 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{FQH3KPSHNYPSDXSGIBVIGYQU7Q}

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	2026-07-05T00:35:41.085232Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2c0fb53e476e1f21de46406a836214fc0bb50fea05528f82d4124d1487f7d7ba

Aliases

arxiv: 1802.05821 · arxiv_version: 1802.05821v2 · doi: 10.48550/arxiv.1802.05821 · pith_short_12: FQH3KPSHNYPS · pith_short_16: FQH3KPSHNYPSDXSG · pith_short_8: FQH3KPSH

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/FQH3KPSHNYPSDXSGIBVIGYQU7Q \
  | 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: 2c0fb53e476e1f21de46406a836214fc0bb50fea05528f82d4124d1487f7d7ba

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "64b351361de4fa4960543d64d65e453d6353de4f5db8b53d07462693d4762605",
    "cross_cats_sorted": [
      "cs.LG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "stat.ML",
    "submitted_at": "2018-02-16T02:17:58Z",
    "title_canon_sha256": "bc6c4cb80f5e6fc4e516ddbf561f307c8384ec69d57ceb79f7eed59a50940fad"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1802.05821",
    "kind": "arxiv",
    "version": 2
  }
}