Raza Serafim

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Raza Serafim

Automation and Computer Science · Technical University of Cluj-Napoca

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Projects

Certified

Self-directed project

Machine Learning for Automotive

AI / ML · July 2026

92/ 100

A ProoV case study · educational project, not employment

Built an end-to-end used-car pricing workflow for VW and Audi listings: combined the datasets, explored price and mileage patterns, engineered predictive features, and trained both Linear Regression and Random Forest models. The work culminated in a business summary that translated model results into a practical recommendation for a Certified Pre-Owned purchasing dashboard.

Graded against

  • Exploratory Data Analysis20%
  • Feature Engineering25%
  • Model Building & Evaluation35%
  • Business Communication20%

Passed · pass mark 60/100

What stood out6
  • Combined VW and Audi listings with a brand column and used the merged dataset consistently in analysis
  • Added the key predictive features and cleaned obvious data errors before modeling
  • Compared Linear Regression against Random Forest using R², MAE, and RMSE rather than relying on a single metric
  • Wrote an executive summary that connects model performance to a concrete CPO purchasing recommendation
  • Leakage-Free Feature Engineering
  • Honest Model Evaluation
The work I submitted10 tasks

5 tasks · 6 lines · 5 written answers · 166 words

  • VW Sprint1 Complete56 characters
  • VW Sprint2 Complete61 characters
  • VW Sprint3 Complete59 characters
  • VW Business Insights1.4k characters
  • Jupyterlite Code2 lines
  • VW Sprint1 Complete1 word
  • VW Sprint2 Complete1 word
  • VW Sprint3 Complete1 word
  • VW Business Insights162 words
  • Jupyterlite Code1 word

Summarised on purpose — the submitted code and writing stay private so this page cannot be reused as an answer key. The full submission sits behind the verified certificate.

Verified certificateTamper-proof · issued by ProoV
1Project completed
1Verified certificate
92Average score
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