Pith Number

pith:2BM4EE4R

pith:2018:2BM4EE4RKUYW6GLZXNP6AXG53N

not attested not anchored not stored refs pending

Learning Supervised Topic Models for Classification and Regression from Crowds

Bernardete Ribeiro, Filipe Rodrigues, Francisco Pereira, Mariana Louren\c{c}o

arxiv:1808.05902 v1 · 2018-08-17 · stat.ML · cs.CL · cs.CV · cs.HC · 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{2BM4EE4RKUYW6GLZXNP6AXG53N}

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	2026-05-18T00:07:51.716389Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d059c2139155316f1979bb5fe05cdddb65b664aa40cd4a8d4a144d1843d41686

Aliases

arxiv: 1808.05902 · arxiv_version: 1808.05902v1 · doi: 10.48550/arxiv.1808.05902 · pith_short_12: 2BM4EE4RKUYW · pith_short_16: 2BM4EE4RKUYW6GLZ · pith_short_8: 2BM4EE4R

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/2BM4EE4RKUYW6GLZXNP6AXG53N \
  | 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: d059c2139155316f1979bb5fe05cdddb65b664aa40cd4a8d4a144d1843d41686

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fca34930ac4a68d0c5a166edf8bd5422492a54757bbe046e0ea9fe03637f0351",
    "cross_cats_sorted": [
      "cs.CL",
      "cs.CV",
      "cs.HC",
      "cs.LG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "stat.ML",
    "submitted_at": "2018-08-17T15:32:24Z",
    "title_canon_sha256": "6f69ed090d524c64347b73d29630b730532ee8d7f0754072ba15de41ac164129"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1808.05902",
    "kind": "arxiv",
    "version": 1
  }
}