Analysis Challenges
Diagnose, segment, model — turn a real situation into a sharp recommendation.
- AnalysisBeginnerNew
Detect Fraudulent Refund Requests for a Mid-Market Marketplace
You receive a labeled dataset with buyer history, seller history, shipping carrier, refund reason text, and outcome label (legit / fraud). Train and evaluate at least two classi…
- Classification
- Model Calibration
- Imbalanced Classification
Open coursework - AnalysisBeginnerNew
Build a Topic-Modeling Pipeline for Citizen Feedback
Take the 60,000 comments (anonymized). Build a BERTopic pipeline with multilingual sentence embeddings (Catalan + Spanish + occasional English). Tune number-of-topics via topic-…
- Topic Modeling
- Bertopic
- Multilingual NLP
Open coursework - AnalysisSeniorNew
M&A Strategy: Should Precision Parts Acquire MicroGears?
Using the financial-data workbook and the industry benchmarks memo provided, value MicroGears Ltd. two ways — a discounted-cash-flow analysis and a comparable-transactions analy…
- Mergers And Acquisitions
- DCF Valuation
- Synergy Estimation
Open coursework - AnalysisIntermediateNew
Compare Kernel SVMs and Gradient Boosting on Imbalanced Tabular Data
You receive a 220,000-row anonymized loan-default dataset with mixed numeric and categorical features and a ~6% positive class. Train and evaluate (1) an RBF-kernel SVM with pro…
- Kernel Methods
- Gradient Boosting
- Model Selection
Machine Learning Practice your coursework on real scenarios.
Every challenge is shaped from real-world context — not generic exercises. The work mirrors what your degree prepares you for.
Why Ewance
- AnalysisBeginnerNew
Build a Reproducible Pricing Analysis for a DTC Skincare Brand
You receive 24 months of order-line data (around 480,000 lines), a Shopify-style customer export, and a discount-code log. Build a Python pipeline that produces: SKU-level price…
- Data Wrangling
- Exploratory Data Analysis
- Cohort Analysis
Applied Data Analysis and Practical Data Science - AnalysisBeginnerNew
Build a Restoration Workflow for a Digital Heritage Archive
You receive 50 high-resolution scans of glass plates plus 3 reference 'gold' restorations done by a senior conservator. Design a reproducible workflow combining inpainting for s…
- Image Restoration
- Inpainting
- Tone Mapping
Open coursework - AnalysisSeniorNew
Tame the P99 Latency Tail of a Real-Time Ad-Auction Service
Working from the four provided materials only, isolate and fix the latency tail of the bidder. Start with the representative auction-handler module ('bidder-module') as the code…
- Performance Optimization
- Ebpf
- Go
Open coursework - AnalysisIntermediateNew
Annual Report Teardown: Zalando vs. ASOS for an Equity Note
Using the two companies' most recent annual reports (provided as links to their investor relations pages) and the supplied list of international accounting standards for referen…
- Financial Statement Analysis
- Ratio Analysis
- IFRS Interpretation
Open coursework - Browse challenges
Explore role
Product Manager
Ship product that solves real user problems. Combine user research, prototyping, and stakeholder alignment to turn ambiguous briefs into measurable wins — the role at the centre of modern software teams.
- AnalysisSeniorNew
Diagnose a Hard-Real-Time Failure in an Automotive ECU
Receive anonymized AUTOSAR runnable + task traces (CSV + Vector CANalyzer .blf), 8 hours covering 3 failure events. Identify timing budget per task and runnable. Reproduce on th…
- Autosar
- Real Time Debugging
- Can Bus Analysis
Open coursework - AnalysisIntermediateNew
Benchmark Visual SLAM Stacks for an Indoor Delivery Robot
You receive 8 indoor rosbag recordings (about 90 minutes total) captured by the robot's stereo camera + Inertial Measurement Unit (IMU) plus ground-truth trajectories from an ex…
- Visual Slam
- Sensor Fusion
- Trajectory Evaluation
Open coursework - AnalysisBeginnerNew
Currency Risk Hedging for a German Exporter
You are a junior treasury analyst. Analyze the company's transaction exposure by reviewing historical exchange rate data and forecasted cash flows. Recommend a hedging strategy …
- Exchange Rate Analysis
- Financial Hedging
- Risk Management
International Economics - AnalysisBeginnerNew
Field Study: Fixing Order Fulfillment at a Cosmetics Startup
Using the order-fulfillment log dataset and the company case file provided to you, map how an order moves from placement to dispatch today and pinpoint where errors and delays a…
- Process Mapping
- Lean
- Quality Management
Open coursework Build a verifiable portfolio.
Submissions become evidence. Reviewers with shipping experience score against a rubric; the result becomes a credential anyone can verify.
Why Ewance
- AnalysisBeginnerNew
Customer-Segmentation Study for a DTC Subscription Box
Use 18 months of anonymized data: order history, churn events, NPS responses, box-rating data, referral activity, marketing-channel attribution. Engineer features (RFM-style + b…
- Unsupervised Learning
- Python Programming
- Ml Applications
Machine Learning (CS Elective) - AnalysisIntermediateNew
Technical-Debt Quantification for an Acquired SaaS
Run a static-analysis sweep (SonarQube + custom dependency scripts) and a 4-hour structured walkthrough with the acquired team's 3 senior engineers. Categorize debt into: code-q…
- Technical Debt
- Code Analysis
- Estimation
Software Evolution and Maintenance - AnalysisIntermediateNew
Run a Pre-Deployment Fairness + Drift Audit on a Hiring Model
You receive a trained classifier (joblib), the training data sample, and a held-out 'next-month' evaluation set. Compute group fairness metrics (false-positive-rate gap, true-po…
- Fairness Metrics
- Drift Detection
- Bias Mitigation
Machine Learning in Practice - AnalysisBeginnerNew
Field-Screen EV Charging Partners for Numbat's Nordic Push
Treat this as a field investigation of publicly observable site networks. Using the provided Numbat capability brief and the candidate-sites dataset, build a partner-selection f…
- Partner Screening
- Alliance Strategy
- Competitive Analysis
Open coursework - AnalysisSeniorNew
Gender Pay Gap Audit at a Hamburg Tech Scale-up
Your task is to analyze the provided anonymized employee dataset (including salary, job level, tenure, performance rating, and gender) to determine if a gender pay gap exists af…
- Pay Gap Analysis
- Regression Analysis
- Blinder Oaxaca Decomposition
Open coursework - AnalysisIntermediateNew
Minimum Wage Impact on a Munich Bakery Chain
You are to produce a policy brief for the bakery's management. Using data on current wages, hours, and profit margins (provided in a simulated dataset), model the impact of the …
- Minimum Wage Analysis
- Labor Demand Modeling
- Cost Benefit Analysis
Open coursework - AnalysisBeginnerNew
Consolidation of a New York D2C Cosmetics Startup with a French Subsidiary
Your task is to produce a full consolidation package for GlowUp Naturals Group. You will receive the trial balances of both entities, details of intercompany transactions (inclu…
- IFRS Consolidation
- Intercompany Elimination
- Non Controlling Interest
Open coursework - AnalysisIntermediateNew
Business Model Innovation for a Traditional Bookstore Chain
Your task is to research and analyze three business model options for PageTurners. For each, assess market potential, required investment, and alignment with core competencies. …
- Business Model Canvas
- Market Research
- Financial Analysis
Open coursework - AnalysisBeginnerNew
Explain a Credit-Risk Model with SHAP for a Fintech
You receive a trained XGBoost credit-risk model (binary default prediction), the training feature schema (38 features), and a held-out 10,000-sample test set with labels. Comput…
- Shap
- Interpretability
- Fairness Analysis
Explainable and Interpretable AI - AnalysisIntermediateNew
Map Knowledge Diffusion Across an Open-Source Project Ecosystem
Using the de-identified contributor activity export (material 1), build a temporal contributor-project network from the recorded events, then collapse it into a contributor-to-c…
- Network Science
- Temporal Networks
- Graph Analysis
Open coursework - AnalysisBeginnerNew
Profile and Optimize a Virtual-Memory-Heavy Image Pipeline
Receive the Go pipeline source, a representative batch (1,200 photos averaging 12MB each, with 30 outliers over 80MB), and host specs (4-core, 16GB RAM, Linux kernel 5.15). Run …
- Virtual Memory
- Performance Profiling
- Memory Hierarchy
Open coursework - AnalysisFoundationalNew
Production Planning for a Sustainable Fashion Brand
Your task is to build a linear program that decides weekly production quantities for each product line. Constraints include labor hours (max 400 hrs), machine hours (max 200 hrs…
- Linear Programming
- Optimization
- Excel
Operations Research and Optimization
How it works
From brief to credential, in six steps.
Step 01
Browse challenges aligned to your studies.
Step 02
Accept the one that fits your goals.
Step 03
Work through it with AI Copilot guidance.
Step 04
Submit for structured evaluation.
Step 05
Earn a verified credential.
Step 06
Add it to LinkedIn with one click.
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