Pith Number

pith:EWH5M2AJ

pith:2011:EWH5M2AJ36FD6T5GQR5D3PMRCB

not attested not anchored not stored refs pending

How to Evaluate Dimensionality Reduction? - Improving the Co-ranking Matrix

Barbara Hammer, Bassam Mokbel, Michael Biehl, Wouter Lueks

arxiv:1110.3917 v1 · 2011-10-18 · cs.LG · cs.IR

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{EWH5M2AJ36FD6T5GQR5D3PMRCB}

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	2026-05-18T04:10:47.687363Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

258fd66809df8a3f4fa6847a3dbd911065cba4b1ff39796ff01276baf0bc69ee

Aliases

arxiv: 1110.3917 · arxiv_version: 1110.3917v1 · doi: 10.48550/arxiv.1110.3917 · pith_short_12: EWH5M2AJ36FD · pith_short_16: EWH5M2AJ36FD6T5G · pith_short_8: EWH5M2AJ

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/EWH5M2AJ36FD6T5GQR5D3PMRCB \
  | 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: 258fd66809df8a3f4fa6847a3dbd911065cba4b1ff39796ff01276baf0bc69ee

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d3dbebbc88053fee42b80bf8b763c62e199cc5eb9fb6febfa83d521652fe503a",
    "cross_cats_sorted": [
      "cs.IR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2011-10-18T09:17:29Z",
    "title_canon_sha256": "69f5d02916fd11c8ac632572be221822f897a9133a7c0f4f298fd36f53e3c002"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1110.3917",
    "kind": "arxiv",
    "version": 1
  }
}