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  ],
  "rai:dataCollection": "Schematic source files (.kicad_sch, .qucs) were collected from publicly available GitHub repositories for the qucs / kicad / myriadrf / m17 / oresat ecosystems. Pages were rendered to PNG via KiCad CLI and Qucs native renderers. A page-level Qwen3.6 RF-relevance gate filtered out non-RF pages.",
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  "rai:dataCollectionRawData": "Original `.kicad_sch` and `.qucs` files plus their rendered images.",
  "rai:dataPreprocessingProtocol": "Each schematic page is rendered to a primary PNG image. For Dynamic Reasoning, ngspice simulation outputs and counterfactual variant plots are pre-computed. RF-relevance gating applied at the page level.",
  "rai:dataAnnotationProtocol": "Gold answers are produced deterministically by Python rules authored by domain experts, extracting structured ground truth from KiCad CLI / Qucs / ngspice outputs. LLMs are NOT used in the gold-answer path. Iterative rule refinement: experts review generated questions and patch rules when systematic errors are found; the released release reflects the latest revisions.",
  "rai:dataAnnotationPlatform": "Custom Python pipelines under `qa_pipelines/<source>/` in the source repository.",
  "rai:dataAnnotationAnalysis": "An independent post-hoc gold audit on a stratified sample is planned as part of the validity protocol; results will be reported in the camera-ready paper.",
  "rai:annotationsPerItem": "1 gold answer per question, deterministic from rules.",
  "rai:annotatorDemographics": "Gold answers produced by deterministic rule code; no human annotators per item.",
  "rai:dataUseCases": [
    "Evaluation of multimodal LLMs on RF circuit schematic understanding.",
    "Diagnostic analysis of structural connectivity reasoning in vision-language models.",
    "Reasoning-mode (thinking on/off) ablation studies."
  ],
  "rai:dataLimitations": "Per-source-class question counts are imbalanced (40 to 974); per-source claims should be reported with N. Dynamic Reasoning subset (N=55) exists only on simulation-capable source class. Questions evaluated in English; Chinese parallel translations provided for reference. Single-image-per-question protocol.",
  "rai:dataBiases": "Source-class bias: the largest source class contributes ~41% of questions, which can dominate micro accuracy. We provide a `permissive` config that excludes the NonCommercial source and recommend reporting both micro and source-balanced macro accuracy. Domain bias: schematics are biased toward open-source SDR / amateur radio / satellite hardware; commercial proprietary RF designs are not represented.",
  "rai:dataReleaseMaintenancePlan": "Versioned releases under semver. Discussion thread is open for gold-answer corrections and parser / scorer disputes. After acceptance, this anonymous repository will be transferred to a maintainer account.",
  "rai:personalSensitiveInformation": "None. The dataset contains schematic images from open-source hardware projects, with no personally identifiable information, biometric data, or sensitive content.",
  "rai:dataSocialImpact": "Positive: enables systematic evaluation of multimodal LLMs on RF engineering tasks, supporting safer deployment in EE / RF design workflows. Risk: LLMs that perform well on this benchmark are not certified for production EE design. Use as evaluation tool, not deployment certification.",
  "rai:hasSyntheticData": false,
  "prov:wasDerivedFrom": [
    {
      "@type": "sc:Dataset",
      "name": "Qucs-S example library (RF subset)",
      "description": "Educational RF circuit examples shipped with Qucs-S; rendered to PNG via Qucs native renderer.",
      "url": "https://github.com/ra3xdh/qucs_s"
    },
    {
      "@type": "sc:Dataset",
      "name": "KiCad public RF schematic projects",
      "description": "Curated set of public GitHub KiCad projects with RF subsystems; rendered to PNG via KiCad CLI."
    },
    {
      "@type": "sc:Dataset",
      "name": "MyriadRF / LimeSDR hardware schematics",
      "description": "Professional SDR board schematics released by Lime Microsystems and the MyriadRF community.",
      "url": "https://github.com/myriadrf"
    },
    {
      "@type": "sc:Dataset",
      "name": "M17 Project digital radio hardware",
      "description": "Open-source digital radio community hardware schematics (CC-BY-NC-SA-4.0 — used in nc_allowed config only).",
      "url": "https://github.com/M17-Project"
    },
    {
      "@type": "sc:Dataset",
      "name": "OreSat satellite GPS module",
      "description": "OreSat space hardware schematics covering RF / GPS subsystems.",
      "url": "https://github.com/oresat"
    }
  ],
  "prov:wasGeneratedBy": {
    "@type": "prov:Activity",
    "name": "RFSchemBench construction pipeline",
    "description": "(1) Schematic source files from open-source repos rendered to PNG via KiCad CLI / Qucs native; (2) Page-level RF-relevance gate (Qwen3.6, used only as filter, not for gold answers); (3) Domain-expert-authored Python rules (`qa_pipelines/<source>/build_tier{1..4}_question_bank.py`) deterministically extract structured ground truth from KiCad netlist / Qucs schematic graph / ngspice simulation outputs and emit (question, gold) tuples; (4) Iterative rule refinement: experts review samples and patch rules upon discovering systematic errors."
  }
}