Pith Number

pith:V2NJGG2D

pith:2021:V2NJGG2DLBJ3I66GC6PR5CRG7P

not attested not anchored not stored refs pending

Low-Shot Validation: Active Importance Sampling for Estimating Classifier Performance on Rare Categories

Deva Ramanan, Fait Poms, Kayvon Fatahalian, Nimit S. Sohoni, Ravi Teja Mullapudi, Vishnu Sarukkai, William R. Mark

arxiv:2109.05720 v1 · 2021-09-13 · 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{V2NJGG2DLBJ3I66GC6PR5CRG7P}

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	2026-07-05T03:13:41.704072Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ae9a931b435853b47bc6179f1e8a26fbd5fb701be4aa3b78d3c1ee2a2a6e55aa

Aliases

arxiv: 2109.05720 · arxiv_version: 2109.05720v1 · doi: 10.48550/arxiv.2109.05720 · pith_short_12: V2NJGG2DLBJ3 · pith_short_16: V2NJGG2DLBJ3I66G · pith_short_8: V2NJGG2D

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/V2NJGG2DLBJ3I66GC6PR5CRG7P \
  | 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: ae9a931b435853b47bc6179f1e8a26fbd5fb701be4aa3b78d3c1ee2a2a6e55aa

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "23c532b192c78001f6bf47ceda3e9da449f60588b2c60d92a453c0db1f329a68",
    "cross_cats_sorted": [
      "cs.LG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2021-09-13T06:01:16Z",
    "title_canon_sha256": "273411142dece2e33530cc0acd7b28177e3680ed90f074bff4927ab503bb990f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2109.05720",
    "kind": "arxiv",
    "version": 1
  }
}