Pith Number

pith:XJREPPWN

pith:2021:XJREPPWN6EM5S2MB5QEFNU7QMQ

not attested not anchored not stored refs pending

Can semi-supervised learning reduce the amount of manual labelling required for effective radio galaxy morphology classification?

Anna M. M. Scaife, Inigo V. Slijepcevic

arxiv:2111.04357 v4 · 2021-11-08 · astro-ph.GA · cs.LG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{XJREPPWN6EM5S2MB5QEFNU7QMQ}

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	2026-07-05T03:53:10.635671Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ba6247becdf119d96981ec0856d3f0642343bec8087c077ba4cae924131d45c7

Aliases

arxiv: 2111.04357 · arxiv_version: 2111.04357v4 · doi: 10.48550/arxiv.2111.04357 · pith_short_12: XJREPPWN6EM5 · pith_short_16: XJREPPWN6EM5S2MB · pith_short_8: XJREPPWN

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/XJREPPWN6EM5S2MB5QEFNU7QMQ \
  | 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: ba6247becdf119d96981ec0856d3f0642343bec8087c077ba4cae924131d45c7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4cbf77c0813e4bcf1bc2215dd381b24374ac2afd0f1d5be46f94c461af5a8d11",
    "cross_cats_sorted": [
      "cs.LG"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2021-11-08T09:36:48Z",
    "title_canon_sha256": "31d94f3a20d1a87e0323a8f42b5fa47322cecd556c099a29c3c99c116c83dda6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2111.04357",
    "kind": "arxiv",
    "version": 4
  }
}