Pith Number

pith:UDQDKWHU

pith:2015:UDQDKWHUYKHBCR7DDTV2PUEDOF

not attested not anchored not stored refs pending

Fast Second-Order Stochastic Backpropagation for Variational Inference

James Kwok, Jeff Beck, Kai Fan, Katherine Heller, Ziteng Wang

arxiv:1509.02866 v2 · 2015-09-09 · 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{UDQDKWHUYKHBCR7DDTV2PUEDOF}

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	2026-05-18T00:47:43.269415Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a0e03558f4c28e1147e31ceba7d0837177f6a5198a6dc86f31f8fbf22f6e9e72

Aliases

arxiv: 1509.02866 · arxiv_version: 1509.02866v2 · doi: 10.48550/arxiv.1509.02866 · pith_short_12: UDQDKWHUYKHB · pith_short_16: UDQDKWHUYKHBCR7D · pith_short_8: UDQDKWHU

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/UDQDKWHUYKHBCR7DDTV2PUEDOF \
  | 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: a0e03558f4c28e1147e31ceba7d0837177f6a5198a6dc86f31f8fbf22f6e9e72

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6adec90066655d83c50478b947d62d88bc8bd252e287dd1ca0adaefc2ba7775b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "stat.ML",
    "submitted_at": "2015-09-09T17:44:37Z",
    "title_canon_sha256": "d2cc5aee7d6d85929f67e09d92a705c9dd3b3919296e50bd783582a9c9bf16d5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1509.02866",
    "kind": "arxiv",
    "version": 2
  }
}