Pith Number

pith:NHPKZ2KY

pith:2026:NHPKZ2KYHYYS63NWRZE52XKFN4

not attested not anchored not stored refs pending

HiSAC: Hierarchical Sparse Activation Compression for Ultra-long Sequence Modeling in Recommenders

Binbin Cao, Changfa Wu, Daixuan Cheng, Jian Wu, Junyu Bi, Kun Yuan, Shuwen Xiao, Yuning Jiang

arxiv:2602.21009 v2 · 2026-02-24 · 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{NHPKZ2KYHYYS63NWRZE52XKFN4}

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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.

Cited by

2 papers in Pith

SinkRec: Mitigating Semantic State Sink in Long Sequence Recommendation with Memory-Conditioned Gated Delta Networks

IAT: Instance-As-Token Compression for Historical User Sequence Modeling in Industrial Recommender Systems

Receipt and verification

First computed	2026-07-07T01:16:06.402172Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

69deace9583e312f6db68e49dd5d456f1bf06e5904a82166aafb38cea793362e

Aliases

arxiv: 2602.21009 · arxiv_version: 2602.21009v2 · doi: 10.48550/arxiv.2602.21009 · pith_short_12: NHPKZ2KYHYYS · pith_short_16: NHPKZ2KYHYYS63NW · pith_short_8: NHPKZ2KY

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/NHPKZ2KYHYYS63NWRZE52XKFN4 \
  | 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: 69deace9583e312f6db68e49dd5d456f1bf06e5904a82166aafb38cea793362e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f0334b2d93144692421e4406a882877a421817a9db6b9b68eaa4b9f4db69149b",
    "cross_cats_sorted": [
      "cs.CL"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IR",
    "submitted_at": "2026-02-24T15:28:58Z",
    "title_canon_sha256": "ceb4e58abae2e55d16600a2cf3735283d2669dd66c9c0e5a4d043e5b42863a39"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2602.21009",
    "kind": "arxiv",
    "version": 2
  }
}