Pith Number

pith:PTLGEZW5

pith:2015:PTLGEZW5YO5VCL2Q4C7LOGNCN6

not attested not anchored not stored refs pending

Learning Sparse Feature Representations using Probabilistic Quadtrees and Deep Belief Nets

Manohar Karki, Ramakrishna Nemani, Robert DiBiano, Saikat Basu, Sangram Ganguly, Supratik Mukhopadhyay

arxiv:1509.03413 v1 · 2015-09-11 · 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{PTLGEZW5YO5VCL2Q4C7LOGNCN6}

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	2026-05-18T01:33:23.298805Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7cd66266ddc3bb512f50e0beb719a26f86563093ac578dc4a9137a4533eca590

Aliases

arxiv: 1509.03413 · arxiv_version: 1509.03413v1 · doi: 10.48550/arxiv.1509.03413 · pith_short_12: PTLGEZW5YO5V · pith_short_16: PTLGEZW5YO5VCL2Q · pith_short_8: PTLGEZW5

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/PTLGEZW5YO5VCL2Q4C7LOGNCN6 \
  | 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: 7cd66266ddc3bb512f50e0beb719a26f86563093ac578dc4a9137a4533eca590

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c9969c64c1cb3c5d9cec08710d6e9c7c801d2261e23cb3b0ed6d5fba80f3fc99",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2015-09-11T08:13:35Z",
    "title_canon_sha256": "6ec920cf32d52713325656c5654e7357742dd8d8400a26c696cbb51f26cddbff"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1509.03413",
    "kind": "arxiv",
    "version": 1
  }
}