Pith Number

pith:NUS6TZCZ

pith:2016:NUS6TZCZX4TMJWTXPPPK2TZNFH

not attested not anchored not stored refs pending

Nonstationary Distance Metric Learning

Alfred Hero, Kristjan Greenewald, Stephen Kelley

arxiv:1603.03678 v2 · 2016-03-11 · 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{NUS6TZCZX4TMJWTXPPPK2TZNFH}

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	2026-05-18T01:14:12.556455Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6d25e9e459bf26c4da777bdead4f2d29d49d1f74109170ae3d2a8e0385598e27

Aliases

arxiv: 1603.03678 · arxiv_version: 1603.03678v2 · doi: 10.48550/arxiv.1603.03678 · pith_short_12: NUS6TZCZX4TM · pith_short_16: NUS6TZCZX4TMJWTX · pith_short_8: NUS6TZCZ

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/NUS6TZCZX4TMJWTXPPPK2TZNFH \
  | 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: 6d25e9e459bf26c4da777bdead4f2d29d49d1f74109170ae3d2a8e0385598e27

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "69168c089f17837325a590ef15d9b82aae68e39608a4404e95e91c60b651fa12",
    "cross_cats_sorted": [
      "cs.LG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "stat.ML",
    "submitted_at": "2016-03-11T16:16:45Z",
    "title_canon_sha256": "3c0b54d8524aa0f20d96fff08e498c8fa29b38748299279a91cd3b8d3133d99d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1603.03678",
    "kind": "arxiv",
    "version": 2
  }
}