Pith Number

pith:5Z2ZNT5P

pith:2019:5Z2ZNT5PGETL4QO5HTCAAOGE5X

not attested not anchored not stored refs pending

Transferability and Hardness of Supervised Classification Tasks

Anh T. Tran, Cuong V. Nguyen, Tal Hassner

arxiv:1908.08142 v1 · 2019-08-21 · cs.LG · cs.CV · 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{5Z2ZNT5PGETL4QO5HTCAAOGE5X}

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	2026-07-04T23:59:10.000267Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ee7596cfaf3126be41dd3cc40038c4edd63f1058acddb15c6185a0f62b460b1d

Aliases

arxiv: 1908.08142 · arxiv_version: 1908.08142v1 · doi: 10.48550/arxiv.1908.08142 · pith_short_12: 5Z2ZNT5PGETL · pith_short_16: 5Z2ZNT5PGETL4QO5 · pith_short_8: 5Z2ZNT5P

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/5Z2ZNT5PGETL4QO5HTCAAOGE5X \
  | 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: ee7596cfaf3126be41dd3cc40038c4edd63f1058acddb15c6185a0f62b460b1d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9543662faeea742793e82cb9d7a2bf6428a34d7347a815ae2b266c306093dc89",
    "cross_cats_sorted": [
      "cs.CV",
      "stat.ML"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2019-08-21T23:35:48Z",
    "title_canon_sha256": "5703c2728b5edc9f7f2457345f64cf2b24c0d983233d8cc57bd51683e5764150"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1908.08142",
    "kind": "arxiv",
    "version": 1
  }
}