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        <datestamp>2025-07-16T02:51:24Z</datestamp>
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          <dc:title xml:lang="ja">Well-being分析と機械学習：ランダムフォレストの活用</dc:title>
          <dcterms:alternative xml:lang="en">Well-being Analysis and Machine Learning: Application of Random Forests</dcterms:alternative>
          <jpcoar:creator>
            <jpcoar:creatorName xml:lang="ja">横山, 直</jpcoar:creatorName>
          </jpcoar:creator>
          <jpcoar:subject xml:lang="en" subjectScheme="Other">Well-being</jpcoar:subject>
          <jpcoar:subject xml:lang="ja" subjectScheme="Other">生活満足度</jpcoar:subject>
          <jpcoar:subject xml:lang="ja" subjectScheme="Other">幸福度</jpcoar:subject>
          <jpcoar:subject xml:lang="en" subjectScheme="Other">Beyond GDP</jpcoar:subject>
          <jpcoar:subject xml:lang="ja" subjectScheme="Other">機械学習</jpcoar:subject>
          <jpcoar:subject xml:lang="ja" subjectScheme="Other">ランダムフォレスト</jpcoar:subject>
          <jpcoar:subject xml:lang="en" subjectScheme="Other">life satisfaction</jpcoar:subject>
          <jpcoar:subject xml:lang="en" subjectScheme="Other">happiness</jpcoar:subject>
          <jpcoar:subject xml:lang="en" subjectScheme="Other">machine learning</jpcoar:subject>
          <jpcoar:subject xml:lang="en" subjectScheme="Other">random forests</jpcoar:subject>
          <datacite:description descriptionType="Other">https://www.grips.ac.jp/list/jp/facultyinfo/yokoyama_tadashi/</datacite:description>
          <datacite:description xml:lang="ja" descriptionType="Abstract">GDPでは捉えられない人々のWell-beingを計測し、政策に活用しようとする取組が世界的に広がる中、Well-beingに関連する分野や要素についての研究も活発に行われている。また、情報処理能力の向上等により、機械学習の手法が社会科学を含む様々な分野で活用されるようになっている。本稿では日本の主観的Well-beingに関連する分野や要素について、機械学習手法の一つであるランダムフォレスト（ RF）を用いた分析を行った。その結果、RFは主観的Well-beingに関連する要素を、「広がり」、「インパクト」、「非線形性」といった観点から多角的かつ柔軟に捉えることが可能であり、日本のWell-beingの特徴を把握する上で有効なツールになり得ることが示唆された。また、RFを用いて60歳代半ばにおける生活満足度の上昇要因について分析したところ、ワークライフバランスの変化が大きく影響していることが示された。
While global efforts have been made to measure people’s well-being that are not captured by GDP and to incorporate them into policymaking, various studies have been conducted regarding the domains and factors associated with well-being. Concurrently, developments in computational capabilities have facilitated the application of machine learning techniques across various disciplines, including the social sciences. This study employs Random Forests (RF), a machine learning algorithm, to analyze the domains and factors associated with subjective well-being in Japan. The results demonstrate that RF can comprehensively and flexibly capture factors related to subjective well-being, particularly in terms of breadth, impact, and non-linearity. This suggests that RF may serve as an effective analytical tool for identifying the characteristics of well-being in Japan. Additionally, an RF-based analysis of factors contributing to a rise in life satisfaction among individuals in their mid-60s shows that changes in work-life balance play a significant role.</datacite:description>
          <dc:publisher xml:lang="en">GRIPS Policy Research Center</dc:publisher>
          <datacite:date dateType="Issued">2025-07-15</datacite:date>
          <dc:language>jpn</dc:language>
          <dc:type>technical report</dc:type>
          <jpcoar:identifier identifierType="DOI">https://doi.org/10.24545/0002000200</jpcoar:identifier>
          <jpcoar:identifier identifierType="URI">https://grips.repo.nii.ac.jp/records/2000200</jpcoar:identifier>
          <jpcoar:identifierRegistration identifierType="JaLC">10.24545/0002000200</jpcoar:identifierRegistration>
          <jpcoar:sourceTitle xml:lang="en">GRIPS Discussion Papers</jpcoar:sourceTitle>
          <jpcoar:volume>25-7</jpcoar:volume>
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