Pith Number

pith:QGQ66PPN

pith:2019:QGQ66PPNTAKN5T32CLO4MZNUDX

not attested not anchored not stored refs pending

Signal-to-Noise Ratio: A Robust Distance Metric for Deep Metric Learning

Binghui Chen, Jian Tang, Tongtong Yuan, Weihong Deng, Yinan Tang

arxiv:1904.02616 v1 · 2019-04-04 · cs.CV

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{QGQ66PPNTAKN5T32CLO4MZNUDX}

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	2026-05-17T23:49:23.182589Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

81a1ef3ded9814decf7a12ddc665b41dd5e8e9e53b8ee088417f91ec9fb53f05

Aliases

arxiv: 1904.02616 · arxiv_version: 1904.02616v1 · doi: 10.48550/arxiv.1904.02616 · pith_short_12: QGQ66PPNTAKN · pith_short_16: QGQ66PPNTAKN5T32 · pith_short_8: QGQ66PPN

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/QGQ66PPNTAKN5T32CLO4MZNUDX \
  | 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: 81a1ef3ded9814decf7a12ddc665b41dd5e8e9e53b8ee088417f91ec9fb53f05

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1502b745a1c984c1aec5bf275d2332878e87a7d2db3e2e62f5bd9f36df5e3831",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2019-04-04T15:42:58Z",
    "title_canon_sha256": "184b2f842cbe9cc4ff2dbc6b9b7150e9cbd835de341e7f097d71c50a29ab93a7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1904.02616",
    "kind": "arxiv",
    "version": 1
  }
}