Pith Number

pith:LBRUQWB2

pith:2018:LBRUQWB23ICJUD3YUFFB5SU7IM

not attested not anchored not stored refs pending

METTLE: a METamorphic testing approach to assessing and validating unsupervised machine LEarning systems

Baowen Xu, Pak-Lok Poon, Tsong Yueh Chen, Xiaoyuan Xie, Yang Liu, Zhiyi Zhang

arxiv:1807.10453 v4 · 2018-07-27 · cs.SE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{LBRUQWB23ICJUD3YUFFB5SU7IM}

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	2026-07-05T00:48:12.946338Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

586348583ada049a0f78a14a1eca9f43077a74ba9ccae862ffc8d7e13a6d22a0

Aliases

arxiv: 1807.10453 · arxiv_version: 1807.10453v4 · doi: 10.48550/arxiv.1807.10453 · pith_short_12: LBRUQWB23ICJ · pith_short_16: LBRUQWB23ICJUD3Y · pith_short_8: LBRUQWB2

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/LBRUQWB23ICJUD3YUFFB5SU7IM \
  | 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: 586348583ada049a0f78a14a1eca9f43077a74ba9ccae862ffc8d7e13a6d22a0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ff8cb3c64001f52a0d258af34c254dbad9aa256b9e25cc0cffad1d4e9829d3a0",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.SE",
    "submitted_at": "2018-07-27T06:49:27Z",
    "title_canon_sha256": "738477d7e590552518c8505d6cbb72f554f2abe22ca00abd2f9282c1701a18cf"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1807.10453",
    "kind": "arxiv",
    "version": 4
  }
}