Pith Number

pith:STOQPARD

pith:2015:STOQPARDYJAHJKQ4FKJ7UT3S77

not attested not anchored not stored refs pending

Efficient Sum of Outer Products Dictionary Learning (SOUP-DIL) and Its Application to Inverse Problems

Jeffrey A. Fessler, Raj Rao Nadakuditi, Saiprasad Ravishankar

arxiv:1511.06333 v4 · 2015-11-19 · 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{STOQPARDYJAHJKQ4FKJ7UT3S77}

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	2026-05-17T23:43:28.852678Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

94dd078223c24074aa1c2a93fa4f72fff5470650cb355c77cfb63dd91c44744e

Aliases

arxiv: 1511.06333 · arxiv_version: 1511.06333v4 · doi: 10.48550/arxiv.1511.06333 · pith_short_12: STOQPARDYJAH · pith_short_16: STOQPARDYJAHJKQ4 · pith_short_8: STOQPARD

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/STOQPARDYJAHJKQ4FKJ7UT3S77 \
  | 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: 94dd078223c24074aa1c2a93fa4f72fff5470650cb355c77cfb63dd91c44744e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0e85626965c2128ee702ad6316218da3cc90e6b3dc9d82b0fd1c5686eedfe180",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2015-11-19T20:01:24Z",
    "title_canon_sha256": "e86356f6a1ca3e440bfdadcfc1733bc9c3e22c0a000f11efd9c235464dc91391"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1511.06333",
    "kind": "arxiv",
    "version": 4
  }
}