Pith Number

pith:QK7IGQAL

pith:2020:QK7IGQALL6NJOA2KTSMCUXCEU7

not attested not anchored not stored refs pending

Metric Learning for Ordered Labeled Trees with pq-grams

Akihiro Yamamoto, Hikaru Shindo, Masaaki Nishino, Yasuaki Kobayashi

arxiv:2003.03960 v1 · 2020-03-09 · 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{QK7IGQALL6NJOA2KTSMCUXCEU7}

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	2026-07-05T00:46:38.047972Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

82be83400b5f9a97034a9c982a5c44a7ea566d1e5dc6ce7e6cd4a7cf53c7b095

Aliases

arxiv: 2003.03960 · arxiv_version: 2003.03960v1 · doi: 10.48550/arxiv.2003.03960 · pith_short_12: QK7IGQALL6NJ · pith_short_16: QK7IGQALL6NJOA2K · pith_short_8: QK7IGQAL

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/QK7IGQALL6NJOA2KTSMCUXCEU7 \
  | 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: 82be83400b5f9a97034a9c982a5c44a7ea566d1e5dc6ce7e6cd4a7cf53c7b095

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7967126cf4ddb3d7c89d5e629f23be12740606d01f4ab9b3685bebe8de77c70e",
    "cross_cats_sorted": [
      "stat.ML"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2020-03-09T08:04:47Z",
    "title_canon_sha256": "89cf85db58de5e1a8c92c4649b86766c235199bb477f4841975b62b15e87ec59"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2003.03960",
    "kind": "arxiv",
    "version": 1
  }
}