Pith Number

pith:HHVW6X3U

pith:2025:HHVW6X3UGFKTN2RNN4LKIJMO6Q

not attested not anchored not stored refs pending

Optimal Dataset Size for Recommender Systems: Evaluating Algorithms' Performance via Downsampling

Ardalan Arabzadeh

arxiv:2502.08845 v2 · 2025-02-12 · cs.IR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{HHVW6X3UGFKTN2RNN4LKIJMO6Q}

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	2026-07-05T10:14:09.076013Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

39eb6f5f74315536ea2d6f16a4258ef42e0c2580dae14b55e4d3fe8622670ba7

Aliases

arxiv: 2502.08845 · arxiv_version: 2502.08845v2 · doi: 10.48550/arxiv.2502.08845 · pith_short_12: HHVW6X3UGFKT · pith_short_16: HHVW6X3UGFKTN2RN · pith_short_8: HHVW6X3U

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/HHVW6X3UGFKTN2RNN4LKIJMO6Q \
  | 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: 39eb6f5f74315536ea2d6f16a4258ef42e0c2580dae14b55e4d3fe8622670ba7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c5415507378576aebe400b5bbe4c9718ae8d420265621108d66e57b19c4e6034",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.IR",
    "submitted_at": "2025-02-12T23:32:09Z",
    "title_canon_sha256": "18c8cdd2e502f61f671cd6fe089d83348fcceb144ff8a6b863dbbeb7af445444"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2502.08845",
    "kind": "arxiv",
    "version": 2
  }
}