Pith Number

pith:FB2MPSDJ

pith:2021:FB2MPSDJQF3EAZQSAM4RRX4AXP

not attested not anchored not stored refs pending

Top-$k$ eXtreme Contextual Bandits with Arm Hierarchy

Alexander Rakhlin, Daniel Hill, Dean Foster, Inderjit Dhillon, Lexing Ying, Rahul Kidambi, Rajat Sen

arxiv:2102.07800 v1 · 2021-02-15 · stat.ML · cs.AI · 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{FB2MPSDJQF3EAZQSAM4RRX4AXP}

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	2026-07-05T02:15:43.511814Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2874c7c8698176406612033918df80bbe0eec3f8e6c0fef15a3eef91cd71eeb8

Aliases

arxiv: 2102.07800 · arxiv_version: 2102.07800v1 · doi: 10.48550/arxiv.2102.07800 · pith_short_12: FB2MPSDJQF3E · pith_short_16: FB2MPSDJQF3EAZQS · pith_short_8: FB2MPSDJ

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/FB2MPSDJQF3EAZQSAM4RRX4AXP \
  | 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: 2874c7c8698176406612033918df80bbe0eec3f8e6c0fef15a3eef91cd71eeb8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "001408229e7b436cf9fe6f0757a0fc8037f7838d12f777a026bd7c93de8ec5d2",
    "cross_cats_sorted": [
      "cs.AI",
      "cs.LG"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "stat.ML",
    "submitted_at": "2021-02-15T19:10:52Z",
    "title_canon_sha256": "1d52d159260c6f33b78665bdf99195f91044ae2a9ae8659839a5bce0c1e06598"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2102.07800",
    "kind": "arxiv",
    "version": 1
  }
}