Pith Number

pith:ZS7EFEVS

pith:2026:ZS7EFEVSQHBTKPYJL7PKA4OERC

not attested not anchored not stored refs pending

Contexting as Recommendation: Evolutionary Collaborative Filtering for Context Engineering

Congmin Zheng, Jiachen Zhu, Jianghao Lin, Lingyu Yang, Lionel Z. Wang, Rong Shan, Weinan Zhang, Weiwen Liu, Yong Yu, Yuxiang Chen, Zeyu Zheng, Zhuoying Ou

arxiv:2605.15721 v1 · 2026-05-15 · cs.CL

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{ZS7EFEVSQHBTKPYJL7PKA4OERC}

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	2026-05-20T00:01:14.696543Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ccbe4292b281c3353f095fdea071c48892ae5f6d9c27cdf21ad5d818dc975432

Aliases

arxiv: 2605.15721 · arxiv_version: 2605.15721v1 · doi: 10.48550/arxiv.2605.15721 · pith_short_12: ZS7EFEVSQHBT · pith_short_16: ZS7EFEVSQHBTKPYJ · pith_short_8: ZS7EFEVS

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/ZS7EFEVSQHBTKPYJL7PKA4OERC \
  | 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: ccbe4292b281c3353f095fdea071c48892ae5f6d9c27cdf21ad5d818dc975432

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f101ca9c28bbf1654c7ca2d57b9aa8e81838538182467197cce085fbbb9bf9d9",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CL",
    "submitted_at": "2026-05-15T08:17:21Z",
    "title_canon_sha256": "26ce36b7e4d72e039ce05c5fa91683ebf3365ced5e1ca9e5d1605ff8eaaf880f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2605.15721",
    "kind": "arxiv",
    "version": 1
  }
}