Pith Number

pith:JXWAPSTC

pith:2015:JXWAPSTCMK5NJQJLFPZGSSSBZP

not attested not anchored not stored refs pending

Hierarchical learning of grids of microtopics

Alessandro Perina, Dongwoo Kim, Nebojsa Jojic

arxiv:1503.03701 v4 · 2015-03-12 · stat.ML · cs.IR · 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{JXWAPSTCMK5NJQJLFPZGSSSBZP}

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	2026-05-18T01:12:43.486444Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4dec07ca6262bad4c12b2bf2694a41cbc187e419e91a2c3ea8debc73ae2f0422

Aliases

arxiv: 1503.03701 · arxiv_version: 1503.03701v4 · doi: 10.48550/arxiv.1503.03701 · pith_short_12: JXWAPSTCMK5N · pith_short_16: JXWAPSTCMK5NJQJL · pith_short_8: JXWAPSTC

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/JXWAPSTCMK5NJQJLFPZGSSSBZP \
  | 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: 4dec07ca6262bad4c12b2bf2694a41cbc187e419e91a2c3ea8debc73ae2f0422

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1dae3f6cb42f0051f191e1f5b6253299d722b74a1af2ddc0a47d571d0efeca97",
    "cross_cats_sorted": [
      "cs.IR",
      "cs.LG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "stat.ML",
    "submitted_at": "2015-03-12T12:59:25Z",
    "title_canon_sha256": "9d75d78e07d6acb535c505a035a326b9af446566995c4dff614bc95c058eceb3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1503.03701",
    "kind": "arxiv",
    "version": 4
  }
}