Pith Number

pith:RYA2A4BW

pith:2019:RYA2A4BWRVCRXYHL5S6X26STDE

not attested not anchored not stored refs pending

Sentiment Classification using N-gram IDF and Automated Machine Learning

Hideaki Hata, Kenichi Matsumoto, Rungroj Maipradit

arxiv:1904.12162 v2 · 2019-04-27 · cs.IR · cs.CL

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{RYA2A4BWRVCRXYHL5S6X26STDE}

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	2026-05-17T23:45:08.942158Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8e01a070368d451be0ebecbd7d7a5319314f78ce5f36005c90d91d9ad7a84e74

Aliases

arxiv: 1904.12162 · arxiv_version: 1904.12162v2 · doi: 10.48550/arxiv.1904.12162 · pith_short_12: RYA2A4BWRVCR · pith_short_16: RYA2A4BWRVCRXYHL · pith_short_8: RYA2A4BW

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/RYA2A4BWRVCRXYHL5S6X26STDE \
  | 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: 8e01a070368d451be0ebecbd7d7a5319314f78ce5f36005c90d91d9ad7a84e74

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "338abc0c426a673b7182baf9a11c223dc6e51c1cc0520491ea6ee0b95f0ac96e",
    "cross_cats_sorted": [
      "cs.CL"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IR",
    "submitted_at": "2019-04-27T14:46:34Z",
    "title_canon_sha256": "19f118a202451bd82f983ebb95dcb3185165f07f5e96f3bf0ee91fd55b6b0447"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1904.12162",
    "kind": "arxiv",
    "version": 2
  }
}