Pith Number

pith:VKV7JMLY

pith:2019:VKV7JMLYL66HDKAGQ34A7SM7B7

not attested not anchored not stored refs pending

Improving classification performance by feature space transformations and model selection

Eric S. Tellez, Jose Ortiz-Bejar, Mario Graff

arxiv:1907.06258 v3 · 2019-07-14 · cs.LG · 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{VKV7JMLYL66HDKAGQ34A7SM7B7}

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	2026-07-05T00:09:26.235670Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

aaabf4b1785fbc71a80686f80fc99f0fc86992c17802fb1fb3bdc53094627c71

Aliases

arxiv: 1907.06258 · arxiv_version: 1907.06258v3 · doi: 10.48550/arxiv.1907.06258 · pith_short_12: VKV7JMLYL66H · pith_short_16: VKV7JMLYL66HDKAG · pith_short_8: VKV7JMLY

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/VKV7JMLYL66HDKAGQ34A7SM7B7 \
  | 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: aaabf4b1785fbc71a80686f80fc99f0fc86992c17802fb1fb3bdc53094627c71

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "71bc5e34a42f87cd675f34eea7994a409a389c369570399bbaae8329a4c660fc",
    "cross_cats_sorted": [
      "stat.ML"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2019-07-14T18:35:58Z",
    "title_canon_sha256": "5ec167ee2c387dbf0cb987ca8b898048fa0b37fd09db9472f894ec7371f76702"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1907.06258",
    "kind": "arxiv",
    "version": 3
  }
}