Pith Number

pith:HMXZBJEO

pith:2015:HMXZBJEO6UURFFYAPQQL75TF23

not attested not anchored not stored refs pending

Teaching a machine to see: unsupervised image segmentation and categorisation using growing neural gas and hierarchical clustering

Alex Hocking (Herts), James E. Geach, Neil Davey, Yi Sun

arxiv:1507.01589 v1 · 2015-07-06 · astro-ph.IM · astro-ph.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{HMXZBJEO6UURFFYAPQQL75TF23}

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	2026-05-18T01:37:12.940189Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3b2f90a48ef5291297007c20bff665d6ef2685b697de2525705b8349e222edca

Aliases

arxiv: 1507.01589 · arxiv_version: 1507.01589v1 · doi: 10.48550/arxiv.1507.01589 · pith_short_12: HMXZBJEO6UUR · pith_short_16: HMXZBJEO6UURFFYA · pith_short_8: HMXZBJEO

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/HMXZBJEO6UURFFYAPQQL75TF23 \
  | 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: 3b2f90a48ef5291297007c20bff665d6ef2685b697de2525705b8349e222edca

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1a47a92ddcacf1454348e50be1217c9737e24fa926cbe45d32f35f758fc6a1e8",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2015-07-06T20:00:36Z",
    "title_canon_sha256": "e591f3146e924273a636a4d4ef8ecdad061f039f9ab4809487acd2254fe52214"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1507.01589",
    "kind": "arxiv",
    "version": 1
  }
}