Pith Number

pith:PPJX5UMT

pith:2025:PPJX5UMT4DDXU3AOCYUJHA3VJM

not attested not anchored not stored refs pending

Breaking the Top-$K$ Barrier: Advancing Top-$K$ Ranking Metrics Optimization in Recommender Systems

Can Wang, Chun Chen, Jiawei Chen, Peng Wu, Shengjia Zhang, Weiqin Yang, Yan Feng, Yuegang Sun

arxiv:2508.05673 v1 · 2025-08-04 · cs.IR · cs.AI · 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{PPJX5UMT4DDXU3AOCYUJHA3VJM}

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	2026-07-05T11:50:41.228864Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7bd37ed193e0c77a6c0e16289383754b1ea9ddab0805089abebebca8c709ff93

Aliases

arxiv: 2508.05673 · arxiv_version: 2508.05673v1 · doi: 10.48550/arxiv.2508.05673 · pith_short_12: PPJX5UMT4DDX · pith_short_16: PPJX5UMT4DDXU3AO · pith_short_8: PPJX5UMT

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/PPJX5UMT4DDXU3AOCYUJHA3VJM \
  | 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: 7bd37ed193e0c77a6c0e16289383754b1ea9ddab0805089abebebca8c709ff93

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5342e3014a9dea05d643fb401b0f2074581cab9793ff33951a99f5a7f33584de",
    "cross_cats_sorted": [
      "cs.AI",
      "cs.LG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IR",
    "submitted_at": "2025-08-04T17:50:02Z",
    "title_canon_sha256": "d00456d9afb3d9d7cf8a01a219b1f67a10f0834c137332c33b4ff6a52ba07ac6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2508.05673",
    "kind": "arxiv",
    "version": 1
  }
}