Pith Number

pith:X67U6NMJ

pith:2019:X67U6NMJ57ULJWIJGSQ73VGIHH

not attested not anchored not stored refs pending

Sentiment analysis is not solved! Assessing and probing sentiment classification

Erik Velldal, Jeremy Barnes, Lilja {\O}vrelid

arxiv:1906.05887 v1 · 2019-06-13 · 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{X67U6NMJ57ULJWIJGSQ73VGIHH}

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	2026-05-17T23:43:24.130236Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bfbf4f3589efe8b4d90934a1fdd4c839db53427385e3488686485abe9cce9bd0

Aliases

arxiv: 1906.05887 · arxiv_version: 1906.05887v1 · doi: 10.48550/arxiv.1906.05887 · pith_short_12: X67U6NMJ57UL · pith_short_16: X67U6NMJ57ULJWIJ · pith_short_8: X67U6NMJ

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/X67U6NMJ57ULJWIJGSQ73VGIHH \
  | 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: bfbf4f3589efe8b4d90934a1fdd4c839db53427385e3488686485abe9cce9bd0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "be37854f18d7807e45a7a45fcf9270f202ec62a937dd7989ac711a6f58dd19a5",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.CL",
    "submitted_at": "2019-06-13T18:35:00Z",
    "title_canon_sha256": "6effbe75d62cf2ac7b1cb64a9b3a18ee16e5fab5eb40f1f1eb31e2de345ca664"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1906.05887",
    "kind": "arxiv",
    "version": 1
  }
}