Pith Number

pith:H2RCZW3U

pith:2021:H2RCZW3UZP75XOLDKATW4NB7TI

not attested not anchored not stored refs pending

On UMAP's true loss function

Fred A. Hamprecht, Sebastian Damrich

arxiv:2103.14608 v2 · 2021-03-26 · cs.LG · stat.ML

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{H2RCZW3UZP75XOLDKATW4NB7TI}

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.

Cited by

1 paper in Pith

CosMAP: Contrastive Manifold Approximation and Projection for Dimensionality Reduction of Omics and Genealogical Data

Receipt and verification

First computed	2026-07-05T02:34:12.245670Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3ea22cdb74cbffdbb96350276e343f9a22fc142ca6e873bab7ca71f3691984a4

Aliases

arxiv: 2103.14608 · arxiv_version: 2103.14608v2 · doi: 10.48550/arxiv.2103.14608 · pith_short_12: H2RCZW3UZP75 · pith_short_16: H2RCZW3UZP75XOLD · pith_short_8: H2RCZW3U

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/H2RCZW3UZP75XOLDKATW4NB7TI \
  | 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: 3ea22cdb74cbffdbb96350276e343f9a22fc142ca6e873bab7ca71f3691984a4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ff20e38d4d6358edb409506eb2e3af42baeadc3c0a8e27e673d7d746eb054928",
    "cross_cats_sorted": [
      "stat.ML"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2021-03-26T17:22:58Z",
    "title_canon_sha256": "89fa3f7a952f6c12e1f86f19bbeef388d8732d07b8c8e52c2c29b4f581049eb2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2103.14608",
    "kind": "arxiv",
    "version": 2
  }
}