Pith Number

pith:SDOJW5VY

pith:2021:SDOJW5VYH24SUI6XP3X76AW3EY

not attested not anchored not stored refs pending

PTR-PPO: Proximal Policy Optimization with Prioritized Trajectory Replay

Xingxing Liang, Yanghe Feng, Yang Ma, Zhong Liu

arxiv:2112.03798 v2 · 2021-12-07 · 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{SDOJW5VYH24SUI6XP3X76AW3EY}

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.

Cited by

2 papers in Pith

Not All Transitions Matter: Evidence from PPO

Evolutionary Enhanced Multi-Agent Reinforcement Learning for Cooperative Air Combat

Receipt and verification

First computed	2026-07-05T03:39:05.062654Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

90dc9b76b83eb92a23d77eefff02db2616a91325daea382da450ae799194d6ee

Aliases

arxiv: 2112.03798 · arxiv_version: 2112.03798v2 · doi: 10.48550/arxiv.2112.03798 · pith_short_12: SDOJW5VYH24S · pith_short_16: SDOJW5VYH24SUI6X · pith_short_8: SDOJW5VY

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/SDOJW5VYH24SUI6XP3X76AW3EY \
  | 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: 90dc9b76b83eb92a23d77eefff02db2616a91325daea382da450ae799194d6ee

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "803ba1eb8935e36a15fccf2783263fe1ea305068ba7623274d204251ac394e7c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2021-12-07T16:15:13Z",
    "title_canon_sha256": "361813252bffb38095ec008887389971cec37806f0a0efdd42250de4149bcba7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2112.03798",
    "kind": "arxiv",
    "version": 2
  }
}