Pith Number

pith:BIH2YNFO

pith:2014:BIH2YNFOZ2AHEI4HT7HAQ645R2

not attested not anchored not stored refs pending

Joint Variable Selection for Data Envelopement Analysis via Group Sparsity

Irene Song, Zhiwei Qin

arxiv:1402.3740 v1 · 2014-02-16 · math.OC · 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{BIH2YNFOZ2AHEI4HT7HAQ645R2}

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	2026-05-18T02:58:47.040907Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0a0fac34aece807223879fce087b9d8e86c6987e6a2849a2751180cf3c858603

Aliases

arxiv: 1402.3740 · arxiv_version: 1402.3740v1 · doi: 10.48550/arxiv.1402.3740 · pith_short_12: BIH2YNFOZ2AH · pith_short_16: BIH2YNFOZ2AHEI4H · pith_short_8: BIH2YNFO

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/BIH2YNFOZ2AHEI4HT7HAQ645R2 \
  | 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: 0a0fac34aece807223879fce087b9d8e86c6987e6a2849a2751180cf3c858603

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5bb74b6afb63b5d8ed4dc8d287aadc2d9f308411016db9f7e10e01e604700ea0",
    "cross_cats_sorted": [
      "stat.ME"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2014-02-16T00:40:09Z",
    "title_canon_sha256": "c4dae5235d060d0222fb6e5d8d2240cc8d89e4a529646a29a70fb387ecefa04b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1402.3740",
    "kind": "arxiv",
    "version": 1
  }
}