Pith Number

pith:Z4CRLPO4

pith:2019:Z4CRLPO45J74B5WPVGNSC3ANS2

not attested not anchored not stored refs pending

Joint Learning of Discriminative Low-dimensional Image Representations Based on Dictionary Learning and Two-layer Orthogonal Projections

Bo Jin, Hao Shen, Lijun Zhao, Xian Wei, Xuan Tang, Yi Lu Murphey, Yuanxiang Li

arxiv:1903.09977 v2 · 2019-03-24 · cs.CV

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{Z4CRLPO45J74B5WPVGNSC3ANS2}

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	2026-07-05T00:18:26.337553Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

cf0515bddcea7fc0f6cfa99b216c0d969eaf80fa97e7cf7e26aaa54eb672e53b

Aliases

arxiv: 1903.09977 · arxiv_version: 1903.09977v2 · doi: 10.48550/arxiv.1903.09977 · pith_short_12: Z4CRLPO45J74 · pith_short_16: Z4CRLPO45J74B5WP · pith_short_8: Z4CRLPO4

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/Z4CRLPO45J74B5WPVGNSC3ANS2 \
  | 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: cf0515bddcea7fc0f6cfa99b216c0d969eaf80fa97e7cf7e26aaa54eb672e53b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ccc4c48b3caa937e627047fad92e7e625d23d6e95efa158ea15d21ed2b9afca7",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/publicdomain/zero/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2019-03-24T12:06:49Z",
    "title_canon_sha256": "42c5fe061119e2c3c4cbaaa9a97d8d1b532e9de8614f4e1679522f9b393a7662"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1903.09977",
    "kind": "arxiv",
    "version": 2
  }
}