Pith Number

pith:4HXWZ4TG

pith:2014:4HXWZ4TGGC4VSJMILB6UFQKYIR

not attested not anchored not stored refs pending

Graph-Sparse LDA: A Topic Model with Structured Sparsity

Byron Wallace, Finale Doshi-Velez, Ryan Adams

arxiv:1410.4510 v2 · 2014-10-16 · stat.ML · cs.CL · 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{4HXWZ4TGGC4VSJMILB6UFQKYIR}

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	2026-05-18T02:33:07.365435Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e1ef6cf26630b9592588587d42c158447a10c464d486bd4b45281ae377f41ebc

Aliases

arxiv: 1410.4510 · arxiv_version: 1410.4510v2 · doi: 10.48550/arxiv.1410.4510 · pith_short_12: 4HXWZ4TGGC4V · pith_short_16: 4HXWZ4TGGC4VSJMI · pith_short_8: 4HXWZ4TG

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/4HXWZ4TGGC4VSJMILB6UFQKYIR \
  | 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: e1ef6cf26630b9592588587d42c158447a10c464d486bd4b45281ae377f41ebc

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d01b856f2ffecdd60053f3710699921dd8ada6e583ecd591eaae170a782731b7",
    "cross_cats_sorted": [
      "cs.CL",
      "cs.LG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "stat.ML",
    "submitted_at": "2014-10-16T17:35:31Z",
    "title_canon_sha256": "f6cc3144a3fba14be299cf9716b4a22f9a02b677feb485e47f06818990173477"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1410.4510",
    "kind": "arxiv",
    "version": 2
  }
}