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Explanation: Anomaly detection is specifically designed to identify rare events or outliers that deviate significantly from expected patterns in data. In the context of fraud detection in financial transactions, anomaly detection methods can be employed to recognize unusual behavior, such as a sudden large transaction or activity from an unfamiliar location. These anomalies are flagged for further investigation. Unlike traditional classification methods, anomaly detection doesn't require labeled data (fraudulent or non-fraudulent labels) and instead focuses on identifying any deviations from a model of normal behavior. Techniques like Isolation Forest and One-Class SVM are commonly used for this purpose in fraud detection systems. Option A: Decision Trees are helpful for classification problems but are less suited for anomaly detection compared to specialized anomaly detection algorithms. Option B: K-Means Clustering is a clustering technique that groups data based on similarity but doesn't inherently detect outliers or anomalies. Option C: Naive Bayes is a probabilistic classifier, often used for classification tasks, but it is not typically used for anomaly detection. Option D: Neural Networks can be used for anomaly detection in complex scenarios, but they generally require large amounts of labeled data and computational resources, making anomaly detection more suitable for this specific use case.
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