{
 "type": "collaboration",
 "question": "How are Yutaka Matsuo and Yusuke Iwasawa connected?",
 "url": "https://researcher-atlas.com/collaboration/yutaka-matsuo-a5050341583--yusuke-iwasawa-a5063925941/",
 "data_version": "2026.07-r1",
 "updated": "2026-07-28",
 "source": "OpenAlex (CC0)",
 "answer": "Yutaka Matsuo and Yusuke Iwasawa have co-authored 18 distinct works together, with recorded publication years from 2018 to 2026.",
 "researchers": [
  {
   "name": "Yutaka Matsuo",
   "openalex_id": "A5050341583",
   "url": "https://researcher-atlas.com/researcher/yutaka-matsuo-a5050341583/"
  },
  {
   "name": "Yusuke Iwasawa",
   "openalex_id": "A5063925941",
   "url": "https://researcher-atlas.com/researcher/yusuke-iwasawa-a5063925941/"
  }
 ],
 "distinct_works_total": 18,
 "source_records": 18,
 "recorded_first_year": 2018,
 "recorded_last_year": 2026,
 "typed_papers_first_year": 2022,
 "typed_papers_last_year": 2026,
 "period_caveat": "Publication type is absent for most records, so the typed-paper range is a lower bound, not the full collaboration period.",
 "later_edition_years": [],
 "dedup_rule": "DOI > OpenAlex Work ID > normalized title + author count; grouped works are dated by earliest publication year",
 "by_year": [
  {
   "year": 2018,
   "papers": 1
  },
  {
   "year": 2022,
   "papers": 3
  },
  {
   "year": 2023,
   "papers": 2
  },
  {
   "year": 2024,
   "papers": 2
  },
  {
   "year": 2025,
   "papers": 5
  },
  {
   "year": 2026,
   "papers": 5
  }
 ]
}