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Machine Learning Problems for Regression and Classification
Here are popular ML problems that belong to both regression and classification types, along with their details and suitable algorithms:
Regression
Task: Predicting House Prices
- Factors: Location, size, age, number of rooms, amenities, market conditions
- Target Variable: House price (continuous)
- Algorithms: Linear Regression, Support Vector Regression, Random Forest Regression, Gradient Boosting Machines
Task: Predicting Stock Prices
- Factors: Company financial data, historical stock prices, market trends, news articles
- Target Variable: Stock price (continuous)
- Algorithms: Recurrent Neural Networks (RNNs), Long Short-Term Memory (LSTM), Autoregressive Integrated Moving Average (ARIMA)
Task: Predicting Customer Lifetime Value (CLTV)
- Factors: Purchase history, demographics, customer interactions, marketing campaign responses
- Target Variable: CLTV (continuous)
- Algorithms: Regression models, clustering algorithms
Task: Predicting Sales Revenue
- Factors: Marketing spend, product pricing, seasonality, competitor activity
- Target Variable: Sales revenue (continuous)
- Algorithms: Time Series Analysis, Regression models
Task: Predicting Energy Consumption
- Factors: Weather conditions, time of day, occupancy, building characteristics
- Target Variable: Energy consumption (continuous)
- Algorithms: Regression models, Neural Networks
Task: Predicting Crop Yield
- Factors: Soil quality, weather patterns, fertilizer usage, seed variety
- Target Variable: Crop yield (continuous)
- Algorithms: Regression models, Support Vector Machines
Task: Predicting Traffic Flow
- Factors: Time of day, day of week, road conditions, accidents, events
- Target Variable: Traffic volume (continuous)
- Algorithms: Time Series Analysis, Regression models, Neural Networks
Task: Predicting Customer Churn
- Factors: Customer demographics, usage patterns, service interactions, billing information
- Target Variable: Churn probability (continuous)
- Algorithms: Logistic Regression, Support Vector Machines, Decision Trees
Task: Predicting Credit Risk
- Factors: Credit history, income, debt, employment status
- Target Variable: Credit score (continuous)
- Algorithms: Logistic Regression, Support Vector Machines, Decision Trees
Task: Predicting the Price of Used Cars
- Factors: Car model, year, mileage, condition, location
- Target Variable: Price (continuous)
- Algorithms: Linear Regression, Random Forest Regression, Gradient Boosting Machines
Classification
Task: Image Classification
- Factors: Image pixels, features, patterns
- Target Variable: Image class (categorical)
- Algorithms: Convolutional Neural Networks (CNNs), Transfer Learning
Task: Spam Detection
- Factors: Email content, sender information, header information
- Target Variable: Spam or not spam (categorical)
- Algorithms: Naive Bayes, Support Vector Machines
Task: Sentiment Analysis
- Factors: Textual content, emotions, opinions
- Target Variable: Sentiment (positive, negative, neutral)
- Algorithms: Recurrent Neural Networks (RNNs), Naive Bayes, Support Vector Machines
Task: Fraud Detection
- Factors: Transaction details, customer behavior, historical data
- Target Variable: Fraudulent or not fraudulent (categorical)
- Algorithms: Anomaly Detection, Decision Trees, Random Forests
Task: Medical Diagnosis
- Factors: Patient symptoms, medical history, test results
- Target Variable: Disease diagnosis (categorical)
- Algorithms: Decision Trees, Support Vector Machines, Neural Networks
Task: Customer Segmentation
- Factors: Customer demographics, purchase history, behavior patterns
- Target Variable: Customer segment (categorical)
- Algorithms: Clustering algorithms (K-means, hierarchical clustering)
Task: Object Detection
- Factors: Image pixels, object features, location
- Target Variable: Object class and bounding box (categorical)
- Algorithms: YOLO (You Only Look Once), Faster R-CNN
Task: Speech Recognition
- Factors: Audio waveforms, frequencies, speech patterns
- Target Variable: Transcribed text (categorical)
- Algorithms: Hidden Markov Models (HMMs), Recurrent Neural Networks (RNNs)
Task: Natural Language Processing (NLP)
- Factors: Textual data, grammatical structure, semantics
- Target Variable: Language understanding (e.g., translation, summarization, question answering)
- Algorithms: Recurrent Neural Networks (RNNs), Transformers
Task: Handwritten Digit Recognition
- Factors: Pixel values, image features, shape
- Target Variable: Digit (0-9)
- Algorithms: Convolutional Neural Networks (CNNs), Support Vector Machines
This collection of problems can help students understand the differences between regression and classification tasks and the appropriate algorithms for each type. By analyzing the factors and target variables, students can learn to identify the nature of the problem and choose the best approach for solving it.