DN
Data analyst & data engineer
Devi Nirfana Hermawan
Transforming raw data into actionable insights. Specializing in data analysis and data engineering.
PythonSQLPower BITableau
Selected work
View allComparative Fraud Detection Using Machine Learning Models
A machine learning project to detect fraudulent activities using various classification models, with performance evaluation and model tuning for optimal accuracy.
Data AnalysisPythonSQLScikit-learnhuggingface
Customer Churn Analysis and Insights
This project performs customer churn analysis to identify key drivers and potentially predict customer attrition.
Data AnalysisPythonTableauPandas
Marketing Campaign A/B Testing Analysis
Analyzed marketing campaign data to determine the most effective promotion strategy across market sizes and store age groups using statistical testing and data visualization.
Data AnalysisPythonPandasScipyStatsmodelsSeaborn