Pith Number

pith:B4SWIH5X

pith:2018:B4SWIH5XA2IDTP6Z7EZVIA3FRG

not attested not anchored not stored refs pending

Learning to Rank from Samples of Variable Quality

Jaap Kamps, Mostafa Dehghani

arxiv:1806.08694 v1 · 2018-06-21 · cs.IR · cs.AI

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

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	2026-05-18T00:12:36.419682Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0f25641fb7069039bfd9f933540365899314129616691ffbc5269038199f7c6c

Aliases

arxiv: 1806.08694 · arxiv_version: 1806.08694v1 · doi: 10.48550/arxiv.1806.08694 · pith_short_12: B4SWIH5XA2ID · pith_short_16: B4SWIH5XA2IDTP6Z · pith_short_8: B4SWIH5X

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/B4SWIH5XA2IDTP6Z7EZVIA3FRG \
  | 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: 0f25641fb7069039bfd9f933540365899314129616691ffbc5269038199f7c6c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "82b23c551418168a1f0a845644d0c1b43050d994d27ffcc845f4b8100bc888e4",
    "cross_cats_sorted": [
      "cs.AI"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IR",
    "submitted_at": "2018-06-21T09:40:20Z",
    "title_canon_sha256": "6c4bdee187550ec4de74a90e1a478b66b23e27726ebc0c959dc7a0cc175d3528"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1806.08694",
    "kind": "arxiv",
    "version": 1
  }
}