# Yutaka Ishii / 石井雄隆 (@yishii_0207) on x

- id: koinon:creator:x_yishii_0207
- url: https://koinonlink.com/kol/x/yishii_0207
- schema_version: 1.4

## Identity
- platform: x
- handle: yishii_0207
- platform_url: https://twitter.com/yishii_0207
- website: http://yutakaishii.com/
- entity_type: creator
- person_id: Cross-platform identity not resolved for this creator.

## Reach
- followers: 2391
- following: 511
- posts_total: 21219
- posts_observed: 1
- posts_per_day: 3.577
- account_age_days: 5932
- verified: false
- size_tier: nano

## Engagement
- status: peak_post_only
- peak_post_engagement_rate: 0.00084
- best_post_interactions: 2
- measurement_source: x_post_interactions
- measurement_formula: interactions on one post — likes, or likes + reposts + replies depending on the discovery path (the two are not distinguishable in the stored data)
- comparable_pool: peak_interactions
- status_note: We have only the single best observed post, so no mean exists. peak_post_engagement_rate is an UPPER BOUND, systematically higher than an average — never compare it against an average rate.
- unit_note: engagement_rate and peak_post_engagement_rate are ratios (0-1); avg_interactions_per_post and best_post_interactions are absolute counts. Read status before reading any number: a null rate has several different causes and status says which one applies here.

## Content
- category: software
- subcategory: ai_tools
- category_confidence: 0.95
- category_source: derived_from_recent_content
- topics: AI in language education, AI-assisted language assessment, Teacher feedback with generative AI, Research funding strategies using AI, Action research in EFL teaching, Standardized AI-enabled speaking tasks
- bio: 千葉大学 大学院教育学研究院 准教授／理化学研究所 革新知能統合研究センター 目的指向基盤技術研究グループ 自然言語理解チーム 客員研究員。英語教育・応用言語学を中心に研究しています。ここでの発言はすべて個人の見解であり、所属機関の公式見解ではありません。

## Audience (inferred)
- status: present
- description: Academics and researchers in applied linguistics, English language teaching (ELT), and educational technology, particularly those focused on AI integration in language assessment and pedagogy
- roles: general_ai
- seniority: practitioner
- pain_points: Struggling to design valid and reliable AI-assisted language assessments that align with educational standards, Finding it difficult to integrate generative AI into teacher feedback practices without compromising pedagogical integri, Lacking practical frameworks for using AI in high-stakes language testing contexts, Difficulty in securing research funding due to the novelty and technical complexity of AI-driven educational research
- posts_analysed: 8
- confidence: 0.4

## Commercial (inferred)
- audience_buyer_fit: 0.8
- promotion_intent: 0.7
- open_to_collaboration: false
- contact: Koinon does not publish creator contact details.

## Quality signals
- authenticity_score: 57
- authenticity_basis: engagement_observed
- credibility_score: 57
- flagged_for_review: false
- koinon_bd_grade: B — measures Koinon partner-outreach fit, not creator quality
- interpretation: Signals for triage, not verdicts. A flag means the profile is worth a manual check.

## Evidence
- [x_yishii_0207#b138acd9] 外国語ワーキンググループ取りまとめ（案） https://t.co/pOzWzkD8EP (https://twitter.com/yishii_0207/status/2072991191084507206)
- [x_yishii_0207#a5ed7e9e] 10月3日（土）9:00～10:30、オンラインにて「生成AI時代における外国語教育と評価の再設計―外国語教育研究から考えるAIとの協働―」をテーマに講演をさせていただきます。詳細・お申し込みは、以下のリンクをご参照ください。 https://t.co/tlE2ciXt5x
- [x_yishii_0207#f0434a4d] 小学校英語評価入門: Can-Do・パフォーマンス評価で伸ばす英語力 https://t.co/A3i7lchpgZ
- [x_yishii_0207#2a37dc38] 生成AIを活用した科研費採択へのアプローチ: 研究資金獲得法の最前線 | A hands-on guide to creating research expense claims using generating AI https://t.co/ldwkkIppF8
- [x_yishii_0207#ae47106b] Leveraging generative AI to enhance teacher feedback for EFL writing: an action research study https://t.co/nc7XCmh7Fk
- [x_yishii_0207#47227219] ChatGPT, Doubao, and human teachers in evaluating secondary school students’ handwritten EFL essays: evidence from the Chinese high-stakes exam context https://t.co/gTbFY4a94S
- [x_yishii_0207#82d814fd] Toward Standardized Interactivity: An AI-Enabled Adaptive Speaking Task for Computer-Delivered Large-Scale Assessment https://t.co/5gPfEpnpbz
- [x_yishii_0207#e4cef450] Human-AI feedback ecologies in L2 writing: A Q-methodological study of

## Provenance
Every inferred field below carries how it was produced. Facts stay facts; inferences stay inferences.

- audience.description: source_type=ai_inferred, confidence=0.4, freshness_days=20, method=llm_persona_from_recent_content
- audience.roles: source_type=ai_inferred, confidence=0.4, freshness_days=20, method=llm_persona_from_recent_content
- audience.seniority: source_type=ai_inferred, confidence=0.4, freshness_days=20, method=llm_persona_from_recent_content
- commercial.audience_buyer_fit: source_type=ai_inferred, confidence=0.6, freshness_days=80, method=llm_scorer — Relative signal within Koinon indexing, not a market-wide score.
- commercial.promotion_intent: source_type=ai_inferred, confidence=0.6, freshness_days=80, method=llm_scorer
- quality.anomaly_flags: source_type=heuristic, confidence=0.5, freshness_days=112, method=profile_snapshot_and_engagement_ratio_heuristic — Means "worth a manual check", NOT confirmed fraud. Flags can be wrong and are not a verdict about the person.
- quality.authenticity_score: source_type=heuristic, confidence=0.5, freshness_days=80, method=Profile-shape heuristic from a single snapshot (follower count, following ratio, account age, posting volume, verification), reduced for engagement red flags where post engagement was collected. Where only a follower count is available the score saturates at 58. — The input set differs by platform; do not compare this score across platforms.
- quality.koinon_bd_grade: source_type=ai_inferred, confidence=0.5, freshness_days=112, method=llm_partner_fit_classifier + fit_score >= 0.6 AND authenticity >= 60 => A; fit_score >= 0.4 AND authenticity >= 45 => B; else C. authenticity < 30 or a promotional-pattern flag => quarantine. — Koinon partner-outreach fit, not creator quality.
- reach.followers: source_type=observed, confidence=0.95, freshness_days=112, method=platform_profile

## Freshness
- profile_checked_days_ago: 112
- content_analysed_days_ago: 80
- audience_updated_days_ago: 20

## AI retrieval
- indexing_requests: 6
- user_triggered_requests: 0
- note: Being indexed in bulk is not the same as being retrieved to answer a question.

## This profile
- Claim or correct: https://koinonlink.com/claim?k=x_yishii_0207
- Request removal: https://koinonlink.com/claim?k=x_yishii_0207
- Terms: https://koinonlink.com/for-ai