Pith Number

pith:UB6EB65V

pith:2018:UB6EB65VN2WILWUY4PRIIHXSA5

not attested not anchored not stored refs pending

Learning to Match via Inverse Optimal Transport

Haomin Zhou, Hongyuan Zha, Ruilin Li, Xiaojing Ye

arxiv:1802.03644 v3 · 2018-02-10 · stat.ML · cs.LG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{UB6EB65VN2WILWUY4PRIIHXSA5}

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	2026-05-18T00:01:53.454649Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a07c40fbb56eac85da98e3e2841ef207535c4de56e6d65ad67beeed2bc7a11bd

Aliases

arxiv: 1802.03644 · arxiv_version: 1802.03644v3 · doi: 10.48550/arxiv.1802.03644 · pith_short_12: UB6EB65VN2WI · pith_short_16: UB6EB65VN2WILWUY · pith_short_8: UB6EB65V

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/UB6EB65VN2WILWUY4PRIIHXSA5 \
  | 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: a07c40fbb56eac85da98e3e2841ef207535c4de56e6d65ad67beeed2bc7a11bd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bb46489ad334106ed2e9a259149d371353d3d03f9661036dacf104623107bc38",
    "cross_cats_sorted": [
      "cs.LG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "stat.ML",
    "submitted_at": "2018-02-10T19:33:38Z",
    "title_canon_sha256": "fc6a9f3daa5ada6da3bf96c73306acb5cd990c1b4b72eba14ad60294bc7b8374"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1802.03644",
    "kind": "arxiv",
    "version": 3
  }
}