Pith Number

pith:NTMSMZJV

pith:2013:NTMSMZJVWQPPWVY6X7VHVCMXO7

not attested not anchored not stored refs pending

Feature Selection Based on Term Frequency and T-Test for Text Categorization

Deqing Wang, Hui Zhang, Rui Liu, Weifeng Lv

arxiv:1305.0638 v1 · 2013-05-03 · cs.LG · cs.IR · stat.ML

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{NTMSMZJVWQPPWVY6X7VHVCMXO7}

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	2026-05-18T03:26:33.147071Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6cd9266535b41efb571ebfea7a899777feaf411f772aa612b30d6db2d43f635a

Aliases

arxiv: 1305.0638 · arxiv_version: 1305.0638v1 · doi: 10.48550/arxiv.1305.0638 · pith_short_12: NTMSMZJVWQPP · pith_short_16: NTMSMZJVWQPPWVY6 · pith_short_8: NTMSMZJV

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/NTMSMZJVWQPPWVY6X7VHVCMXO7 \
  | 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: 6cd9266535b41efb571ebfea7a899777feaf411f772aa612b30d6db2d43f635a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "557041a20da19b58bb6c4fd963fb5dc9a9c09611da0fb084da01cf7fc25f398c",
    "cross_cats_sorted": [
      "cs.IR",
      "stat.ML"
    ],
    "license": "http://creativecommons.org/licenses/by-nc-sa/3.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2013-05-03T08:26:05Z",
    "title_canon_sha256": "b77c7a2ec29d2a8b8c50228ba9ed9a8142b122a9b9992eaf666d325c429eb16e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1305.0638",
    "kind": "arxiv",
    "version": 1
  }
}