Pith Number

pith:I557RBPX

pith:2019:I557RBPX3IZPKBAKIF7Z3O6XAS

not attested not anchored not stored refs pending

Reduced-Rank Local Distance Metric Learning for k-NN Classification

Cong Li, Georgios C. Anagnostopoulos, Michael Georgiopoulos, Yinjie Huang

arxiv:1902.08313 v1 · 2019-02-21 · cs.LG · stat.ML

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{I557RBPX3IZPKBAKIF7Z3O6XAS}

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	2026-05-17T23:52:57.684911Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

477bf885f7da32f5040a417f9dbbd704a89a750c40f5f8d2e2f03360f5baea9d

Aliases

arxiv: 1902.08313 · arxiv_version: 1902.08313v1 · doi: 10.48550/arxiv.1902.08313 · pith_short_12: I557RBPX3IZP · pith_short_16: I557RBPX3IZPKBAK · pith_short_8: I557RBPX

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/I557RBPX3IZPKBAKIF7Z3O6XAS \
  | 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: 477bf885f7da32f5040a417f9dbbd704a89a750c40f5f8d2e2f03360f5baea9d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fa316a8a69a9c6d0c7aa342a60b782d193f2da208eaa2aa7160ca577ba4ba0c7",
    "cross_cats_sorted": [
      "stat.ML"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2019-02-21T23:46:37Z",
    "title_canon_sha256": "4e2bcc0c2a89b794d2e20e18a06bd6a9254c371d1e2ffda8db9479acc2be2390"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1902.08313",
    "kind": "arxiv",
    "version": 1
  }
}