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Comparative Analysis of Supervised and Unsupervised Machine Learning for Predictive Analytics

Olabode Michael Soneye; Sylvester Tafirenyika; Tamuka Mavenge Moyo; Bukky Okojie Eboseremen; Ayorinde Olayiwola Akindemowo; Eseoghene Daniel Erigha; Ehimah Obuse; Joshua Oluwagbenga Ajayi

Abstract

Predictive analytics has become a crucial tool in data-driven decision-making across industries, leveraging machine learning techniques to extract meaningful patterns from vast datasets. Supervised and unsupervised learning are two primary machine learning approaches widely used for predictive modeling. This study presents a comparative analysis of supervised and unsupervised machine learning techniques, evaluating their effectiveness, applications, and limitations in predictive analytics. Supervised learning algorithms, including decision trees, support vector machines (SVM), random forests, and neural networks, require labeled data to train models for accurate predictions. These algorithms excel in applications such as fraud detection, medical diagnosis, and sales forecasting. In contrast, unsupervised learning techniques like clustering (K-means, DBSCAN) and dimensionality reduction (Principal Component Analysis, Autoencoders) do not rely on labeled data but uncover hidden structures and anomalies in datasets, making them ideal for market segmentation, anomaly detection, and recommendation systems. This study assesses both learning paradigms based on key performance criteria, including accuracy, interpretability, computational efficiency, scalability, and real-world applicability. Findings indicate that supervised learning achieves higher predictive accuracy due to explicit guidance from labeled data but often requires extensive data preprocessing and domain knowledge. Conversely, unsupervised learning provides insights from unstructured data, uncovering hidden relationships, yet lacks definitive accuracy due to the absence of ground truth labels. The selection of the appropriate approach depends on the nature of the dataset, problem complexity, and desired outcome. The study concludes that combining both supervised and unsupervised learning in hybrid models enhances predictive performance by leveraging labeled data for a

Keywords

Predictive AnalyticsSupervised LearningUnsupervised LearningMachine LearningDecision TreesSVMNeural NetworksClusteringDimensionality ReductionAnomaly Detection.

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