Pith Number

pith:EP4DHNOI

pith:2026:EP4DHNOIWPZDGWXFGZMED7ZI4N

not attested not anchored not stored refs pending

DualSpectralCF: Training-Free Sign-Aware Spectral Collaborative Filtering

Guanqun Yang, Tong Qi, Xiaoxue Han

arxiv:2608.10247 v1 · 2026-08-10 · cs.IR · cs.LG · cs.SI

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{EP4DHNOIWPZDGWXFGZMED7ZI4N}

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	2026-08-12T00:23:10.540205Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

23f833b5c8b3f2335ae5365841ff28e346aa811583d99bf67a5495c2bcf4b60d

Aliases

arxiv: 2608.10247 · arxiv_version: 2608.10247v1 · doi: 10.48550/arxiv.2608.10247 · pith_short_12: EP4DHNOIWPZD · pith_short_16: EP4DHNOIWPZDGWXF · pith_short_8: EP4DHNOI

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/EP4DHNOIWPZDGWXFGZMED7ZI4N \
  | 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: 23f833b5c8b3f2335ae5365841ff28e346aa811583d99bf67a5495c2bcf4b60d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ac678500c59ef45cbf1e9f7c16f40170803d6f30c814cd39c35bae332b1888b0",
    "cross_cats_sorted": [
      "cs.LG",
      "cs.SI"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IR",
    "submitted_at": "2026-08-10T21:28:37Z",
    "title_canon_sha256": "c4f7f8b3a54729354bb33a239d220c18e50afb46be7c664bc468faef56554203"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2608.10247",
    "kind": "arxiv",
    "version": 1
  }
}