Pith Number

pith:FT2H5RLW

pith:2019:FT2H5RLW3QDX4EGCXPHUHSHK3N

not attested not anchored not stored refs pending

An Imitation Learning Approach to Unsupervised Parsing

Bowen Li, Frank Keller, Lili Mou

arxiv:1906.02276 v1 · 2019-06-05 · 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{FT2H5RLW3QDX4EGCXPHUHSHK3N}

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	2026-05-17T23:44:01.712938Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2cf47ec576dc077e10c2bbcf43c8eadb798aa92d5250f2efad85668c38877d14

Aliases

arxiv: 1906.02276 · arxiv_version: 1906.02276v1 · doi: 10.48550/arxiv.1906.02276 · pith_short_12: FT2H5RLW3QDX · pith_short_16: FT2H5RLW3QDX4EGC · pith_short_8: FT2H5RLW

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/FT2H5RLW3QDX4EGCXPHUHSHK3N \
  | 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: 2cf47ec576dc077e10c2bbcf43c8eadb798aa92d5250f2efad85668c38877d14

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "874bc92fe6112c6df790c379bd7bfb6cfb4a3c75002288ecff91119730f3a3b4",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CL",
    "submitted_at": "2019-06-05T19:45:21Z",
    "title_canon_sha256": "a07126ae4e6e01c49ffeb5fa0c18bda8943bcb018610a33f08c4cb0140305996"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1906.02276",
    "kind": "arxiv",
    "version": 1
  }
}