Pith Number

pith:5FPCWWTE

pith:2025:5FPCWWTE7KTSE6PREQDSIIBGSH

not attested not anchored not stored refs pending

Taming the One-Epoch Phenomenon in Online Recommendation System by Two-stage Contrastive ID Pre-training

Chantat Eksombatchai, Jiajing Xu, Po-Wei Wang, Yi-Ping Hsu

arxiv:2508.18700 v1 · 2025-08-26 · 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{5FPCWWTE7KTSE6PREQDSIIBGSH}

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	2026-07-05T11:59:29.424872Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e95e2b5a64faa72279f1240724202691fe67896c47bc7872cf0146c19a189a2b

Aliases

arxiv: 2508.18700 · arxiv_version: 2508.18700v1 · doi: 10.48550/arxiv.2508.18700 · pith_short_12: 5FPCWWTE7KTS · pith_short_16: 5FPCWWTE7KTSE6PR · pith_short_8: 5FPCWWTE

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/5FPCWWTE7KTSE6PREQDSIIBGSH \
  | 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: e95e2b5a64faa72279f1240724202691fe67896c47bc7872cf0146c19a189a2b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1e6a56ebcc8b2b8a97be01e37b0b8d284f6bde843a53d0a7ba214a7c31a9b258",
    "cross_cats_sorted": [
      "cs.LG"
    ],
    "license": "http://creativecommons.org/licenses/by-nc-sa/4.0/",
    "primary_cat": "cs.IR",
    "submitted_at": "2025-08-26T06:06:21Z",
    "title_canon_sha256": "20167d02b89b6c94efb3b9d24377456fbe55714b8ae86876f4604c3c536af63c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2508.18700",
    "kind": "arxiv",
    "version": 1
  }
}