# Mehmet Yildiz (@Mehmet_Stern) on x

- id: koinon:creator:x_mehmet_stern
- url: https://koinonlink.com/kol/x/Mehmet_Stern
- schema_version: 1.4

## Identity
- platform: x
- handle: Mehmet_Stern
- platform_url: https://twitter.com/Mehmet_Stern
- website: https://youtube.com/@mehmetyildizch?si=bAct9o2VG8Mg7Swv
- country: CH
- entity_type: creator
- person_id: Cross-platform identity not resolved for this creator.

## Reach
- followers: 11642
- following: 1024
- posts_total: 11480
- posts_observed: 1
- posts_per_day: 8.523
- account_age_days: 1347
- verified: true
- size_tier: koc

## Engagement
- status: peak_post_only
- peak_post_engagement_rate: 0.00052
- best_post_interactions: 6
- 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: lifestyle
- subcategory: travel
- category_confidence: 0.75
- category_source: derived_from_recent_content
- topics: Istanbul street scenes and music, Turkish language nuances, East-West cultural links, Personal daily life in Kadıköy
- bio: Regards croisés 🇨🇭 • East to West 🌍 • West to East 
Liens Est-Ouest et dynamiques culturelles.

## Audience (inferred)
- status: present
- description: Istanbul culture observers and East-West cultural enthusiasts, mainly casual followers interested in street life and personal observations
- roles: consumer
- seniority: consumer
- posts_analysed: 7
- confidence: 0.4

## Commercial (inferred)
- audience_buyer_fit: 0.1
- promotion_intent: 0.1
- open_to_collaboration: false
- contact: Koinon does not publish creator contact details.

## Quality signals
- authenticity_score: 65
- authenticity_basis: engagement_observed
- credibility_score: 80
- flagged_for_review: false
- koinon_bd_grade: C — 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_mehmet_stern#372cdd74] Roms d’Istanbul, musiciens de rue, Kadıköy - rive asiatique https://t.co/W5b9PWhViq https://t.co/UGx9uTC1cD (https://twitter.com/Mehmet_Stern/status/2065736212380340634)
- [x_mehmet_stern#a470525d] Dil sürçmesi değilse, süreç kelimesini çoğul olarak kullandığına göre, tek bir “süreç” değil, bir kaç “süreç” söz konusu.
- [x_mehmet_stern#3da69dc9] Salutations d’Istanbul avec mon pote Soda 🐾 https://t.co/x4SyqscByD
- [x_mehmet_stern#b3659944] Insulter Marie et son fils de la sorte… l’enfer est bel et bien sur terre. https://t.co/T2JrMBCu7w
- [x_mehmet_stern#d0cb7d10] L’avenir c’est le tigre. Il n’y a plus grand chose d’intéressant chez l’homme. https://t.co/zNV900r2Xx
- [x_mehmet_stern#92da1171] Certainement la plus belle voix que j'aie jamais entendue sur le quai de Kadıköy, rive orientale d’Istanbul. Le fait qu'elle soit en kurde la rend encore plus spéciale. Puisses-tu avoir de nombreux auditeurs, mon cher frère ☀️ Vous pouvez aussi suivre Kerim Kaplan sur sa chaîne Y
- [x_mehmet_stern#73b9f9fb] En Turquie, tout l’éventai

## 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=77, method=llm_persona_from_recent_content
- audience.roles: source_type=ai_inferred, confidence=0.4, freshness_days=77, method=llm_persona_from_recent_content
- audience.seniority: source_type=ai_inferred, confidence=0.4, freshness_days=77, method=llm_persona_from_recent_content
- commercial.audience_buyer_fit: source_type=ai_inferred, confidence=0.6, freshness_days=77, 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=77, method=llm_scorer
- quality.anomaly_flags: source_type=heuristic, confidence=0.5, freshness_days=111, 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=77, 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=111, 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=111, method=platform_profile

## Freshness
- profile_checked_days_ago: 111
- content_analysed_days_ago: 77
- audience_updated_days_ago: 77

## AI retrieval
- indexing_requests: 10
- 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_mehmet_stern
- Request removal: https://koinonlink.com/claim?k=x_mehmet_stern
- Terms: https://koinonlink.com/for-ai