Pith Number

pith:G7O664BT

pith:2014:G7O664BTLI766I7EEYF4YWKTMK

not attested not anchored not stored refs pending

Compute Less to Get More: Using ORC to Improve Sparse Filtering

Johannes Lederer, Sergio Guadarrama

arxiv:1409.4689 v2 · 2014-09-16 · cs.CV · 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{G7O664BTLI766I7EEYF4YWKTMK}

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	2026-05-18T02:03:48.271007Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

37ddef70335a3fef23e4260bcc595362b6fd42f295bcb30c64f24e376bef823a

Aliases

arxiv: 1409.4689 · arxiv_version: 1409.4689v2 · doi: 10.48550/arxiv.1409.4689 · pith_short_12: G7O664BTLI76 · pith_short_16: G7O664BTLI766I7E · pith_short_8: G7O664BT

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/G7O664BTLI766I7EEYF4YWKTMK \
  | 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: 37ddef70335a3fef23e4260bcc595362b6fd42f295bcb30c64f24e376bef823a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "91548fc76cb109b664209c1795de89ad0415b31ab5a571d828727fecf5a87189",
    "cross_cats_sorted": [
      "cs.LG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2014-09-16T16:31:07Z",
    "title_canon_sha256": "e49dc951c23761c96f8dd923355d2d642a08c65669e7418c28cedddba94e6011"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1409.4689",
    "kind": "arxiv",
    "version": 2
  }
}