Pith Number

pith:RXCA5CCD

pith:2017:RXCA5CCDT3DIYCIYRWWOASSXD4

not attested not anchored not stored refs pending

Scalable Robust Matrix Factorization with Nonconvex Loss

James T. Kwok, Quanming Yao

arxiv:1710.07205 v4 · 2017-10-19 · cs.NA · math.OC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{RXCA5CCDT3DIYCIYRWWOASSXD4}

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	2026-05-18T00:05:05.479467Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8dc40e88439ec68c09188dace04a571f345c1e0b97563379de90e826f3d37599

Aliases

arxiv: 1710.07205 · arxiv_version: 1710.07205v4 · doi: 10.48550/arxiv.1710.07205 · pith_short_12: RXCA5CCDT3DI · pith_short_16: RXCA5CCDT3DIYCIY · pith_short_8: RXCA5CCD

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/RXCA5CCDT3DIYCIYRWWOASSXD4 \
  | 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: 8dc40e88439ec68c09188dace04a571f345c1e0b97563379de90e826f3d37599

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8a1f4c33d8c396721a8b6f23cc863dee67393fcb41c9be4afd88b1a076d1a616",
    "cross_cats_sorted": [
      "math.OC"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.NA",
    "submitted_at": "2017-10-19T15:55:27Z",
    "title_canon_sha256": "99d3ba372781016c4467254081c2fc081566a280ced5d9e1cada684bf8e849d6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1710.07205",
    "kind": "arxiv",
    "version": 4
  }
}