Pith Number

pith:X7IS4N2B

pith:2026:X7IS4N2BIUY2WUFCTYLO3KEPJL

not attested not anchored not stored refs pending

ChartREG++: Towards Benchmarking and Improving Chart Referring Expression Grounding under Diverse referring clues and Multi-Target Referring

Qingfu Zhu, Tianhao Niu, Wanxiang Che, Xuan Dong, Ziyu Han

A new benchmark and code-driven synthesis pipeline improve referring expression grounding on charts with multiple targets and diverse clues.

arxiv:2605.07415 v2 · 2026-05-08 · cs.CV · 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{X7IS4N2BIUY2WUFCTYLO3KEPJL}

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.

Claims

C1strongest claim

The resulting system consistently outperforms baselines on our benchmark and generalizes well to a ChartQA-derived real-chart grounding benchmark.

C2weakest assumption

That the code-driven synthesis pipeline produces masks that faithfully match real rendered charts and that the benchmark's distribution of clues and chart types reflects practical use cases.

C3one line summary

ChartREG++ creates a new multi-target chart grounding benchmark with diverse cues and a code-driven synthesis pipeline for accurate masks, yielding a model that outperforms baselines and generalizes to real ChartQA charts.

Receipt and verification

First computed	2026-06-10T01:10:03.088707Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bfd12e37414531ab50a29e16eda88f4aefe1efdea45157c0fc0a6ccee550698a

Aliases

arxiv: 2605.07415 · arxiv_version: 2605.07415v2 · doi: 10.48550/arxiv.2605.07415 · pith_short_12: X7IS4N2BIUY2 · pith_short_16: X7IS4N2BIUY2WUFC · pith_short_8: X7IS4N2B

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/X7IS4N2BIUY2WUFCTYLO3KEPJL \
  | 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: bfd12e37414531ab50a29e16eda88f4aefe1efdea45157c0fc0a6ccee550698a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "65c60e257d7ad46333a07d328d6afaf4374524cfc96f6176377e5988ff8ff638",
    "cross_cats_sorted": [
      "cs.CL"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2026-05-08T08:07:11Z",
    "title_canon_sha256": "e4123e93fe4522b2a1fbc4a03bdbb45570cd91f48708a16c29ac2b653eb583c5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2605.07415",
    "kind": "arxiv",
    "version": 2
  }
}