Machine Learning Algorithms for Beginners
Comparison of Machine Learning Algorithms Machine Learning algorithms are techniques used to build models that can make predictions or decisions based on data. Choosing the right algorithm depends on the type of data available and the nature of the problem you’re aiming to solve. Algorithm Name Algorithm Type Supervision Typical Use Cases Key Strengths Linear Regression Regression Supervised House prices, demand forecasting Simple, interpretable Logistic Regression Classification Supervised Churn prediction, spam detection Probabilistic output, efficient Decision Trees Classification/Regression Supervised Credit scoring, rule-based modelling Interpretability, works with categorical data Random Forest Classification/Regression Supervised Recommendation systems, market prediction Robust, handles overfitting well SVM Classification Supervised Image and text classification Effective in high-dimensional spaces Neural Networks Classification/Regression Supervised Speech, image, and language tasks Powerful with large and complex data K-Means Clustering Unsupervised Customer segmentation, social analysis Fast, simple clustering PCA Dimensionality Reduction Unsupervised Pre-processing, noise reduction Reduces dimensionality, improves efficiency Hierarchical Clustering Clustering Unsupervised Taxonomy, market segmentation No need to pre-define clusters Autoencoders Feature Learning Unsupervised Anomaly detection, image reconstruction Learns compact representations Q-Learning Reinforcement Learning RL Grid-based environments, simple agents Simple, foundational RL approach DQN Reinforcement Learning RL Game playing, real-time systems Combines RL with deep learning Policy Gradients Reinforcement Learning RL Robotics, continuous control Handles continuous actions Actor-Critic Reinforcement Learning RL Resource allocation, adaptive control Balanced learning via value and policy K-Nearest Neighbours Classification/Regression Supervised Price estimation, recommendations Easy to implement, intuitive Naive Bayes Classification Supervised Text classification, sentiment analysis Fast, works well with high-dimensional data Semi-Supervised Learning Hybrid Semi-Supervised Medical imaging, web classification Reduces labelling effort, improves accuracy Self-Supervised Learning Representation Learning Self-Supervised Pretraining for NLP/vision models Learns features without manual labels Ensemble Learning Meta-Model Supervised Fraud detection, competitions High accuracy, reduces overfitting Types of Machine Learning Algorithms Linear Regression Linear Regression is used to predict a continuous value based on one or more input features. It fits a straight line (or hyperplane in multiple dimensions) to model the relationship between variables. ...