Pith Number

pith:7H7Q24KV

pith:2019:7H7Q24KV54ZRGW6GSCDLNIUD3P

not attested not anchored not stored refs pending

Incorporating System-Level Objectives into Recommender Systems

Himan Abdollahpouri

arxiv:1906.01435 v1 · 2019-05-31 · cs.IR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{7H7Q24KV54ZRGW6GSCDLNIUD3P}

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	2026-05-17T23:44:16.616245Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f9ff0d7155ef33135bc69086b6a283dbfdca7f99f612c2351bf31ccd620ae641

Aliases

arxiv: 1906.01435 · arxiv_version: 1906.01435v1 · doi: 10.48550/arxiv.1906.01435 · pith_short_12: 7H7Q24KV54ZR · pith_short_16: 7H7Q24KV54ZRGW6G · pith_short_8: 7H7Q24KV

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/7H7Q24KV54ZRGW6GSCDLNIUD3P \
  | 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: f9ff0d7155ef33135bc69086b6a283dbfdca7f99f612c2351bf31ccd620ae641

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "dcb1cef1677f95bd7d0d22ddde19dc6f943775e95493b55fe29190776fabbbc2",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IR",
    "submitted_at": "2019-05-31T23:20:01Z",
    "title_canon_sha256": "1536211d5d185ca17b203ffc59e514425f5085ef04c81d8f940dcb649e3f2152"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1906.01435",
    "kind": "arxiv",
    "version": 1
  }
}