Pith Number

pith:JM7WKDH4

pith:2015:JM7WKDH4ZWYLRCZMFXDLDG5JFM

not attested not anchored not stored refs pending

Boosted Sparse Non-linear Distance Metric Learning

Tian Zheng, Yuting Ma

arxiv:1512.03396 v1 · 2015-12-10 · stat.ML · 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{JM7WKDH4ZWYLRCZMFXDLDG5JFM}

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	2026-05-18T01:24:37.298649Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4b3f650cfccdb0b88b2c2dc6b19ba92b208b4492bd39cd4c81b083a3c56c703a

Aliases

arxiv: 1512.03396 · arxiv_version: 1512.03396v1 · doi: 10.48550/arxiv.1512.03396 · pith_short_12: JM7WKDH4ZWYL · pith_short_16: JM7WKDH4ZWYLRCZM · pith_short_8: JM7WKDH4

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/JM7WKDH4ZWYLRCZMFXDLDG5JFM \
  | 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: 4b3f650cfccdb0b88b2c2dc6b19ba92b208b4492bd39cd4c81b083a3c56c703a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "dccaf2465640c56564ce6ab08b8acbc76e0210b0ddf8056c7e19265d2ec72a53",
    "cross_cats_sorted": [
      "cs.LG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "stat.ML",
    "submitted_at": "2015-12-10T20:19:01Z",
    "title_canon_sha256": "c042a31d45e6aaeb1edf372e52b2c824d5716b9097ca8b524c2a14d93b78fbda"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1512.03396",
    "kind": "arxiv",
    "version": 1
  }
}