Pith Number

pith:2VZ5WBYR

pith:2018:2VZ5WBYRXYVW5J23HOOYSUOFMX

not attested not anchored not stored refs pending

Sparse Reduced Rank Regression With Nonconvex Regularization

Daniel P. Palomar, Ziping Zhao

arxiv:1803.07247 v1 · 2018-03-20 · stat.ML · cs.LG · q-fin.CP · stat.ME

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{2VZ5WBYRXYVW5J23HOOYSUOFMX}

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	2026-05-18T00:20:33.846723Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d573db0711be2b6ea75b3b9d8951c565f98795fe5fca7d09ec6c4effd6ec3caf

Aliases

arxiv: 1803.07247 · arxiv_version: 1803.07247v1 · doi: 10.48550/arxiv.1803.07247 · pith_short_12: 2VZ5WBYRXYVW · pith_short_16: 2VZ5WBYRXYVW5J23 · pith_short_8: 2VZ5WBYR

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/2VZ5WBYRXYVW5J23HOOYSUOFMX \
  | 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: d573db0711be2b6ea75b3b9d8951c565f98795fe5fca7d09ec6c4effd6ec3caf

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5b7a57aba7e5f8d202dddbc4d19bd39e2d7490763a42ce4e9e7bd7bc200881d5",
    "cross_cats_sorted": [
      "cs.LG",
      "q-fin.CP",
      "stat.ME"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "stat.ML",
    "submitted_at": "2018-03-20T04:07:02Z",
    "title_canon_sha256": "5f13c85268f0fb3e0d1a81e386b4768a0316caf87a8e5c1e2d87b84ee7354f57"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1803.07247",
    "kind": "arxiv",
    "version": 1
  }
}