{
  "experiment": "D",
  "dataset": "Anonymous semantic taxonomy of 30 Japanese web essays",
  "taxonomy_version": "1.0",
  "created_at": "2026-09-21",
  "corpus": {
    "article_count": 30,
    "author_count": 1,
    "language": "ja",
    "publication_period": "2026-08 to 2026-09",
    "source_visibility": "public web essays",
    "public_source_identifiers_withheld": true
  },
  "privacy": {
    "titles_published": false,
    "source_urls_published": false,
    "author_name_published": false,
    "platform_name_published": false,
    "engagement_metrics_published": false,
    "exact_publication_dates_published": false,
    "note": "The public dataset intentionally removes direct identifiers and engagement data. Semantic labels remain interpretive and may still carry some re-identification risk."
  },
  "method": {
    "description": "Each essay is classified into a controlled thematic taxonomy and descriptive writing-feature labels.",
    "classification_type": "human-guided language-model semantic classification",
    "interpretive_status": "labels are analytical interpretations, not ground-truth facts",
    "length_band": {
      "short": "comparatively brief within this 30-essay corpus",
      "standard": "middle range within this 30-essay corpus",
      "long": "comparatively long within this 30-essay corpus"
    }
  },
  "theme_distribution": {
    "AI & technology": 10,
    "Language & meaning": 7,
    "Culture & media": 4,
    "Work & society": 2,
    "Everyday life & memory": 4,
    "Sports & fandom": 2,
    "Customs & belief": 1
  },
  "articles": [
    {
      "article_id": "essay-m6a3",
      "publication_month": "2026-09",
      "main_theme": "language_meaning",
      "subtheme": "social identity created through externally assigned symbols",
      "article_type": "conceptual_essay",
      "writing_features": [
        "first_person",
        "social_observation",
        "hypothesis_driven",
        "concept_reframing"
      ],
      "key_concepts": [
        "social_symbol",
        "age_identity",
        "external_labeling",
        "SNS"
      ],
      "length_band": "standard"
    },
    {
      "article_id": "essay-j2p8",
      "publication_month": "2026-08",
      "main_theme": "culture_media",
      "subtheme": "medium fit and the durability of news-consumption habits",
      "article_type": "experience_reflection",
      "writing_features": [
        "long_term_routine",
        "contrast_structure",
        "media_behavior",
        "first_person"
      ],
      "key_concepts": [
        "news",
        "audio",
        "habit",
        "media_format"
      ],
      "length_band": "standard"
    },
    {
      "article_id": "essay-n3v6",
      "publication_month": "2026-09",
      "main_theme": "ai_technology",
      "subtheme": "AI-assisted discovery outside platform recommendations",
      "article_type": "experiment_log",
      "writing_features": [
        "first_person",
        "self_experiment",
        "humor",
        "feedback_loop"
      ],
      "key_concepts": [
        "recommendation",
        "discovery",
        "AI_selection",
        "feedback"
      ],
      "length_band": "standard"
    },
    {
      "article_id": "essay-w8c3",
      "publication_month": "2026-08",
      "main_theme": "sports_fandom",
      "subtheme": "sports identity sustained by narrative and institutional memory",
      "article_type": "sports_cultural_analysis",
      "writing_features": [
        "historical_narrative",
        "question_led",
        "myth_analysis",
        "fandom_perspective"
      ],
      "key_concepts": [
        "sports_legacy",
        "institution",
        "narrative",
        "succession"
      ],
      "length_band": "standard"
    },
    {
      "article_id": "essay-k7m2",
      "publication_month": "2026-09",
      "main_theme": "culture_media",
      "subtheme": "visual storytelling and genre expectations",
      "article_type": "cultural_analysis",
      "writing_features": [
        "question_led",
        "contrast_structure",
        "close_reading",
        "hypothesis_driven"
      ],
      "key_concepts": [
        "opening_sequence",
        "genre_convention",
        "absence",
        "food_media"
      ],
      "length_band": "standard"
    },
    {
      "article_id": "essay-b2k9",
      "publication_month": "2026-08",
      "main_theme": "language_meaning",
      "subtheme": "a technical term spreading into general workplace language",
      "article_type": "language_analysis",
      "writing_features": [
        "personal_anecdote",
        "semantic_shift",
        "humor",
        "concept_reframing"
      ],
      "key_concepts": [
        "semantic_shift",
        "jargon",
        "workplace_language",
        "ambiguity"
      ],
      "length_band": "long"
    },
    {
      "article_id": "essay-v9k1",
      "publication_month": "2026-09",
      "main_theme": "culture_media",
      "subtheme": "memory attached to viewing context more strongly than plot details",
      "article_type": "media_revisit",
      "writing_features": [
        "retrospective",
        "sensory_memory",
        "associative_structure",
        "contrast_structure"
      ],
      "key_concepts": [
        "television",
        "childhood",
        "memory",
        "routine"
      ],
      "length_band": "standard"
    },
    {
      "article_id": "essay-t9m6",
      "publication_month": "2026-08",
      "main_theme": "language_meaning",
      "subtheme": "negative metaphor hidden inside workplace jargon",
      "article_type": "humorous_personification",
      "writing_features": [
        "personification",
        "humor",
        "workplace_observation",
        "short_form"
      ],
      "key_concepts": [
        "jargon",
        "metaphor",
        "bottleneck",
        "personification"
      ],
      "length_band": "short"
    },
    {
      "article_id": "essay-h9p4",
      "publication_month": "2026-09",
      "main_theme": "everyday_memory",
      "subtheme": "a hobby becoming an ordinary household routine",
      "article_type": "experience_reflection",
      "writing_features": [
        "first_person",
        "retrospective",
        "household_observation",
        "humor"
      ],
      "key_concepts": [
        "home_roasting",
        "routine",
        "delegation",
        "domestication"
      ],
      "length_band": "standard"
    },
    {
      "article_id": "essay-z5m2",
      "publication_month": "2026-09",
      "main_theme": "ai_technology",
      "subtheme": "prompt skill as accumulated context rather than clever wording",
      "article_type": "conceptual_essay",
      "writing_features": [
        "first_person",
        "concept_reframing",
        "contrast_structure",
        "process_focus"
      ],
      "key_concepts": [
        "prompting",
        "context",
        "dialogue",
        "skill"
      ],
      "length_band": "standard"
    },
    {
      "article_id": "essay-u3q7",
      "publication_month": "2026-08",
      "main_theme": "ai_technology",
      "subtheme": "whether AI should examine the goals behind assigned objectives",
      "article_type": "conceptual_essay",
      "writing_features": [
        "workplace_case",
        "speculative",
        "value_inquiry",
        "future_orientation"
      ],
      "key_concepts": [
        "goals",
        "automation",
        "values",
        "meta_objective"
      ],
      "length_band": "long"
    },
    {
      "article_id": "essay-q4x9",
      "publication_month": "2026-09",
      "main_theme": "ai_technology",
      "subtheme": "AI lowers execution barriers and reveals missed possibilities",
      "article_type": "conceptual_essay",
      "writing_features": [
        "first_person",
        "hypothesis_driven",
        "concept_reframing",
        "future_orientation"
      ],
      "key_concepts": [
        "opportunity_cost",
        "capability_boundary",
        "experimentation",
        "AI_assistance"
      ],
      "length_band": "standard"
    },
    {
      "article_id": "essay-c4w1",
      "publication_month": "2026-08",
      "main_theme": "language_meaning",
      "subtheme": "meaning-making across etymology, observation, and care",
      "article_type": "language_cultural_analysis",
      "writing_features": [
        "cross_domain_comparison",
        "hypothesis_revised",
        "first_person",
        "source_checking"
      ],
      "key_concepts": [
        "observation",
        "care",
        "etymology",
        "interpretation"
      ],
      "length_band": "long"
    },
    {
      "article_id": "essay-l4y9",
      "publication_month": "2026-08",
      "main_theme": "everyday_memory",
      "subtheme": "resisting overcomplication in everyday coffee culture",
      "article_type": "experience_reflection",
      "writing_features": [
        "personal_anecdote",
        "value_reframing",
        "contrast_structure",
        "practical_tone"
      ],
      "key_concepts": [
        "coffee",
        "expertise",
        "simplicity",
        "everyday_practice"
      ],
      "length_band": "standard"
    },
    {
      "article_id": "essay-y4n5",
      "publication_month": "2026-09",
      "main_theme": "work_society",
      "subtheme": "blind recruitment and strategic self-presentation",
      "article_type": "workplace_analysis",
      "writing_features": [
        "retrospective",
        "historical_context",
        "game_metaphor",
        "causal_chain"
      ],
      "key_concepts": [
        "recruitment",
        "credentials",
        "self_presentation",
        "evaluation"
      ],
      "length_band": "long"
    },
    {
      "article_id": "essay-x5a6",
      "publication_month": "2026-08",
      "main_theme": "work_society",
      "subtheme": "balancing information security with emergency access",
      "article_type": "workplace_analysis",
      "writing_features": [
        "event_triggered_reconsideration",
        "risk_tradeoff",
        "policy_reasoning",
        "contrast_structure"
      ],
      "key_concepts": [
        "smartphone",
        "security",
        "emergency",
        "risk_design"
      ],
      "length_band": "long"
    },
    {
      "article_id": "essay-t5c2",
      "publication_month": "2026-09",
      "main_theme": "everyday_memory",
      "subtheme": "language learning embedded in commuting and fandom",
      "article_type": "experience_reflection",
      "writing_features": [
        "first_person",
        "routine_based",
        "humor",
        "associative_link"
      ],
      "key_concepts": [
        "commute",
        "shadowing",
        "fandom",
        "habit"
      ],
      "length_band": "short"
    },
    {
      "article_id": "essay-h3y7",
      "publication_month": "2026-08",
      "main_theme": "ai_technology",
      "subtheme": "authorship when generative AI can produce polished creative outputs",
      "article_type": "cultural_analysis",
      "writing_features": [
        "question_led",
        "concept_reframing",
        "authorship_focus",
        "hypothesis_driven"
      ],
      "key_concepts": [
        "authorship",
        "style",
        "generative_AI",
        "creative_identity"
      ],
      "length_band": "standard"
    },
    {
      "article_id": "essay-p3d6",
      "publication_month": "2026-09",
      "main_theme": "ai_technology",
      "subtheme": "AI answers shaped by conversational context and user framing",
      "article_type": "conceptual_essay",
      "writing_features": [
        "observed_case",
        "self_reflection",
        "cautionary",
        "concept_reframing"
      ],
      "key_concepts": [
        "context",
        "confirmation",
        "reasoning",
        "interaction"
      ],
      "length_band": "standard"
    },
    {
      "article_id": "essay-r7d3",
      "publication_month": "2026-08",
      "main_theme": "language_meaning",
      "subtheme": "names as traces of historical distribution routes",
      "article_type": "language_analysis",
      "writing_features": [
        "etymology",
        "cross_domain_comparison",
        "historical_context",
        "concept_reframing"
      ],
      "key_concepts": [
        "etymology",
        "trade",
        "naming",
        "distribution"
      ],
      "length_band": "long"
    },
    {
      "article_id": "essay-d2w7",
      "publication_month": "2026-09",
      "main_theme": "culture_media",
      "subtheme": "rereading a formative story across different life stages",
      "article_type": "media_revisit",
      "writing_features": [
        "first_person",
        "retrospective",
        "age_contrast",
        "emotional_self_observation"
      ],
      "key_concepts": [
        "rereading",
        "memory",
        "age",
        "emotional_change"
      ],
      "length_band": "standard"
    },
    {
      "article_id": "essay-e9v4",
      "publication_month": "2026-08",
      "main_theme": "sports_fandom",
      "subtheme": "the changing identity of a legacy sports franchise",
      "article_type": "sports_cultural_analysis",
      "writing_features": [
        "personal_fandom",
        "historical_comparison",
        "identity_analysis",
        "question_led"
      ],
      "key_concepts": [
        "franchise_identity",
        "tradition",
        "modernization",
        "fandom"
      ],
      "length_band": "long"
    },
    {
      "article_id": "essay-b8r1",
      "publication_month": "2026-09",
      "main_theme": "everyday_memory",
      "subtheme": "a recurring lottery ritual and imagined escape from ordinary life",
      "article_type": "personal_essay",
      "writing_features": [
        "first_person",
        "recurring_ritual",
        "humor",
        "compact_form"
      ],
      "key_concepts": [
        "lottery",
        "ritual",
        "fantasy",
        "ordinary_life"
      ],
      "length_band": "short"
    },
    {
      "article_id": "essay-n8f5",
      "publication_month": "2026-08",
      "main_theme": "language_meaning",
      "subtheme": "pronouns acquiring relationship meanings",
      "article_type": "language_analysis",
      "writing_features": [
        "historical_trace",
        "contrast_structure",
        "semantic_shift",
        "question_led"
      ],
      "key_concepts": [
        "pronouns",
        "romance",
        "semantic_change",
        "modern_language"
      ],
      "length_band": "long"
    },
    {
      "article_id": "essay-c7q2",
      "publication_month": "2026-09",
      "main_theme": "customs_belief",
      "subtheme": "pragmatic support and reciprocity around a local religious institution",
      "article_type": "custom_reflection",
      "writing_features": [
        "personal_anecdote",
        "value_reframing",
        "humor",
        "retrospective"
      ],
      "key_concepts": [
        "ritual",
        "patronage",
        "reciprocity",
        "institution"
      ],
      "length_band": "standard"
    },
    {
      "article_id": "essay-f6n1",
      "publication_month": "2026-08",
      "main_theme": "ai_technology",
      "subtheme": "prompting as iterative gap-closing communication",
      "article_type": "conceptual_essay",
      "writing_features": [
        "analogy",
        "process_model",
        "first_person",
        "concept_reframing"
      ],
      "key_concepts": [
        "prompting",
        "difference",
        "iteration",
        "communication"
      ],
      "length_band": "standard"
    },
    {
      "article_id": "essay-g1r7",
      "publication_month": "2026-08",
      "main_theme": "language_meaning",
      "subtheme": "an ordinary gesture becoming an age-coded symbol",
      "article_type": "language_analysis",
      "writing_features": [
        "personal_anecdote",
        "historical_trace",
        "social_observation",
        "question_led"
      ],
      "key_concepts": [
        "gesture",
        "symbol",
        "age_code",
        "platform_culture"
      ],
      "length_band": "standard"
    },
    {
      "article_id": "essay-r1f8",
      "publication_month": "2026-09",
      "main_theme": "ai_technology",
      "subtheme": "cultural unease around AI-assisted writing",
      "article_type": "cultural_analysis",
      "writing_features": [
        "first_person",
        "social_observation",
        "naming_gap",
        "hypothesis_driven"
      ],
      "key_concepts": [
        "AI_writing",
        "authorship",
        "stigma",
        "cultural_norm"
      ],
      "length_band": "standard"
    },
    {
      "article_id": "essay-s2b5",
      "publication_month": "2026-08",
      "main_theme": "ai_technology",
      "subtheme": "AI broadens the set of ideas considered feasible",
      "article_type": "experience_reflection",
      "writing_features": [
        "work_anecdote",
        "capability_reframing",
        "first_person",
        "reflective"
      ],
      "key_concepts": [
        "capability",
        "experimentation",
        "automation",
        "possibility"
      ],
      "length_band": "standard"
    },
    {
      "article_id": "essay-a8t4",
      "publication_month": "2026-09",
      "main_theme": "ai_technology",
      "subtheme": "future normalization of perceived AI personhood",
      "article_type": "conceptual_essay",
      "writing_features": [
        "speculative",
        "social_observation",
        "question_led",
        "hypothesis_driven"
      ],
      "key_concepts": [
        "personhood",
        "anthropomorphism",
        "normalization",
        "interface"
      ],
      "length_band": "standard"
    }
  ]
}