Pith Number

pith:QTSL3YD3

pith:2015:QTSL3YD3SLC4PRRWSHIMWUYM2O

not attested not anchored not stored refs pending

Normalized Hierarchical SVM

Heejin Choi, Nathan Srebro, Yutaka Sasaki

arxiv:1508.02479 v2 · 2015-08-11 · 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{QTSL3YD3SLC4PRRWSHIMWUYM2O}

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	2026-05-18T01:19:38.666473Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

84e4bde07b92c5c7c63691d0cb530cd385e8b2dd9fb3dc4f5efabc7ab9b2de59

Aliases

arxiv: 1508.02479 · arxiv_version: 1508.02479v2 · doi: 10.48550/arxiv.1508.02479 · pith_short_12: QTSL3YD3SLC4 · pith_short_16: QTSL3YD3SLC4PRRW · pith_short_8: QTSL3YD3

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/QTSL3YD3SLC4PRRWSHIMWUYM2O \
  | 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: 84e4bde07b92c5c7c63691d0cb530cd385e8b2dd9fb3dc4f5efabc7ab9b2de59

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "33f123bfd28b9a998c3fc40686ceee3f9b705e7605751dad123097c7eda9efd6",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2015-08-11T03:34:33Z",
    "title_canon_sha256": "0bd6c46e391bb0086460fb61f99c86d4c9de9bb9128f5b21eca1e1114eb3dcec"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1508.02479",
    "kind": "arxiv",
    "version": 2
  }
}