Pith Number

pith:QKMKY76Q

pith:2018:QKMKY76QCB2UHE2DMP3JZOFWAU

not attested not anchored not stored refs pending

Variational Inference for Policy Gradient

Tianbing Xu

arxiv:1802.07833 v2 · 2018-02-21 · cs.LG · cs.AI · 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{QKMKY76QCB2UHE2DMP3JZOFWAU}

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	2026-05-18T00:20:13.590143Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8298ac7fd0107543934363f69cb8b60519c143c17a95816598e33c1cfabc0013

Aliases

arxiv: 1802.07833 · arxiv_version: 1802.07833v2 · doi: 10.48550/arxiv.1802.07833 · pith_short_12: QKMKY76QCB2U · pith_short_16: QKMKY76QCB2UHE2D · pith_short_8: QKMKY76Q

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/QKMKY76QCB2UHE2DMP3JZOFWAU \
  | 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: 8298ac7fd0107543934363f69cb8b60519c143c17a95816598e33c1cfabc0013

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1dff8018c040eb1e069bc3601966d732355220e426bf1708db37e607145271f1",
    "cross_cats_sorted": [
      "cs.AI",
      "stat.ML"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2018-02-21T22:18:20Z",
    "title_canon_sha256": "2042975e6320f5bcea2e34c9558fff8061410b6eb7bf14af8fd58357f79bc24b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1802.07833",
    "kind": "arxiv",
    "version": 2
  }
}