Pith Number

pith:HHCGSQ27

pith:2021:HHCGSQ27PKF4HUPWTQ6JBGJ6TZ

not attested not anchored not stored refs pending

Reinforcement Learning with a Disentangled Universal Value Function for Item Recommendation

Changjie Fan, Jianrong Tao, Kai Wang, Liang Chen, Peng Cui, Qilin Deng, Runze Wu, Zhene Zou

arxiv:2104.02981 v2 · 2021-04-07 · cs.IR · 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{HHCGSQ27PKF4HUPWTQ6JBGJ6TZ}

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	2026-07-05T02:31:05.612087Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

39c469435f7a8bc3d1f69c3c90993e9e54fa25e67a2a7a8d28bd33ebbdcb670e

Aliases

arxiv: 2104.02981 · arxiv_version: 2104.02981v2 · doi: 10.48550/arxiv.2104.02981 · pith_short_12: HHCGSQ27PKF4 · pith_short_16: HHCGSQ27PKF4HUPW · pith_short_8: HHCGSQ27

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/HHCGSQ27PKF4HUPWTQ6JBGJ6TZ \
  | 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: 39c469435f7a8bc3d1f69c3c90993e9e54fa25e67a2a7a8d28bd33ebbdcb670e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "dcebfa25ba1cb69b5e2d19a2442469f01a4ff949a7c2ed46f9df73430315889d",
    "cross_cats_sorted": [
      "cs.LG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IR",
    "submitted_at": "2021-04-07T08:13:32Z",
    "title_canon_sha256": "e8b5d1bcfc4303f96982ba3b0f3ab171c62f1c7e01f778bc1bcdb3588a7f6721"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2104.02981",
    "kind": "arxiv",
    "version": 2
  }
}