Pith Number

pith:G7TMO2UF

pith:2015:G7TMO2UFFXL422OTXRPVAER56S

not attested not anchored not stored refs pending

Why Regularized Auto-Encoders learn Sparse Representation?

Devansh Arpit, Hung Ngo, Venu Govindaraju, Yingbo Zhou

arxiv:1505.05561 v5 · 2015-05-21 · stat.ML · 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{G7TMO2UFFXL422OTXRPVAER56S}

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	2026-05-18T01:12:18.457055Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

37e6c76a852dd7cd69d3bc5f50123df4a58455fa16cbb0691a467749554a0d54

Aliases

arxiv: 1505.05561 · arxiv_version: 1505.05561v5 · doi: 10.48550/arxiv.1505.05561 · pith_short_12: G7TMO2UFFXL4 · pith_short_16: G7TMO2UFFXL422OT · pith_short_8: G7TMO2UF

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/G7TMO2UFFXL422OTXRPVAER56S \
  | 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: 37e6c76a852dd7cd69d3bc5f50123df4a58455fa16cbb0691a467749554a0d54

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4683d103939bf69a2d26b18298b4b94144999068078cdd2495f98ac9292674cd",
    "cross_cats_sorted": [
      "cs.CV",
      "cs.LG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "stat.ML",
    "submitted_at": "2015-05-21T00:10:46Z",
    "title_canon_sha256": "b40dc655ff35f2931d4c62c885ac101799c38aaacb1f89db1b2af62bc43e65e4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1505.05561",
    "kind": "arxiv",
    "version": 5
  }
}