Pith Number

pith:7HXW6F25

pith:2020:7HXW6F25XA4F7EJ423Y46TAAQ2

not attested not anchored not stored refs pending

Filtering for Aggregate Hidden Markov Models with Continuous Observations

Qinsheng Zhang, Rahul Singh, Yongxin Chen

arxiv:2011.02521 v2 · 2020-11-04 · stat.ML · cs.IT · cs.LG · cs.SY · eess.SY · math.IT · math.OC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{7HXW6F25XA4F7EJ423Y46TAAQ2}

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	2026-07-05T01:49:39.496460Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f9ef6f175db8385f913cd6f1cf4c008694c3afa24a80f3a1bc1058106c5a4e92

Aliases

arxiv: 2011.02521 · arxiv_version: 2011.02521v2 · doi: 10.48550/arxiv.2011.02521 · pith_short_12: 7HXW6F25XA4F · pith_short_16: 7HXW6F25XA4F7EJ4 · pith_short_8: 7HXW6F25

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/7HXW6F25XA4F7EJ423Y46TAAQ2 \
  | 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: f9ef6f175db8385f913cd6f1cf4c008694c3afa24a80f3a1bc1058106c5a4e92

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6a4214fe04f14e29cdc2502ee84d577b4694dbffbd0f3805dedad603742c1ac8",
    "cross_cats_sorted": [
      "cs.IT",
      "cs.LG",
      "cs.SY",
      "eess.SY",
      "math.IT",
      "math.OC"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "stat.ML",
    "submitted_at": "2020-11-04T20:05:36Z",
    "title_canon_sha256": "97ca329d2294f1fe125cc3e9bc125e816c7cf09ea7217738c25654d73f9edeec"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2011.02521",
    "kind": "arxiv",
    "version": 2
  }
}