Pith Number

pith:PGBJCS54

pith:2026:PGBJCS54HUAXFIEBEHOKRQ5G43

not attested not anchored not stored refs pending

Worse than Random: The Importance of a Baseline for Unsupervised Feature Selection

Arthur Zimek, Michael E. Houle, Muhammad Rajabinasab, Oussama Chelly

arxiv:2605.22973 v1 · 2026-05-21 · cs.LG · cs.AI

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{PGBJCS54HUAXFIEBEHOKRQ5G43}

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	2026-05-25T02:01:32.773067Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7982914bbc3d0172a08121dca8c3a6e6ddaa6ce13331963617624f73c78a04b0

Aliases

arxiv: 2605.22973 · arxiv_version: 2605.22973v1 · doi: 10.48550/arxiv.2605.22973 · pith_short_12: PGBJCS54HUAX · pith_short_16: PGBJCS54HUAXFIEB · pith_short_8: PGBJCS54

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/PGBJCS54HUAXFIEBEHOKRQ5G43 \
  | 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: 7982914bbc3d0172a08121dca8c3a6e6ddaa6ce13331963617624f73c78a04b0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a85f1088eb01ff8b17283dbc7b3ebd45ff4d7988ee405b97f560ba0c07672587",
    "cross_cats_sorted": [
      "cs.AI"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2026-05-21T19:04:54Z",
    "title_canon_sha256": "aa9cafa33ca6d9d8a44fb18f9e4865d42e0fdda2daff3629dc288f66cafd2809"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2605.22973",
    "kind": "arxiv",
    "version": 1
  }
}