Anomaly Detection Techniques
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Questions and Answers

What is a major limitation of supervised anomaly detection?

  • Limited applicability
  • High accuracy
  • High computational cost
  • Data unavailability and unbalanced classes (correct)

Which anomaly detection technique uses a labeled dataset?

  • Semi-supervised anomaly detection
  • Reinforcement learning
  • Supervised anomaly detection (correct)
  • Unsupervised anomaly detection

What is a common application of unsupervised anomaly detection?

  • Natural language processing
  • Network intrusion detection (correct)
  • Recommendation systems
  • Image classification

Which algorithm is often used in unsupervised anomaly detection?

<p>Clustering algorithms (B)</p> Signup and view all the answers

What is the main advantage of unsupervised anomaly detection?

<p>No need for labeled data (D)</p> Signup and view all the answers

What type of neural networks are used in anomaly detection to identify anomalies in limited labeled data?

<p>Semi-supervised neural networks (B)</p> Signup and view all the answers

What is the purpose of categorizing anomaly detection techniques?

<p>To compare and evaluate their effectiveness (D)</p> Signup and view all the answers

What is the primary objective of an agent in reinforcement learning?

<p>To learn a policy that maximizes the reward over time (D)</p> Signup and view all the answers

What type of machine learning training method is used for anomaly detection?

<p>Reinforcement learning (A)</p> Signup and view all the answers

What type of data is commonly used in supervised anomaly detection?

<p>Labeled dataset (B)</p> Signup and view all the answers

Why are labels typically binary in anomaly detection?

<p>No specific reason, it's just a convention (D)</p> Signup and view all the answers

What is the primary application of reinforcement learning models in anomaly detection?

<p>Algorithmic trading (B)</p> Signup and view all the answers

What is the environment of an agent in reinforcement learning?

<p>An environment with clear parameters defining beneficial and non-beneficial activity (D)</p> Signup and view all the answers

What is the goal of the agent's decision-making process in reinforcement learning?

<p>To maximize the reward over time (C)</p> Signup and view all the answers

What type of anomaly detection systems use reinforcement learning?

<p>Reinforcement learning models (A)</p> Signup and view all the answers

What is the characteristic of the overarching endgame in reinforcement learning?

<p>Clear parameters defining beneficial and non-beneficial activity (D)</p> Signup and view all the answers

What can reinforcement learning be useful for in anomaly detection?

<p>Learning through trial-and-error interactions with the environment (A)</p> Signup and view all the answers

What is the primary purpose of statistical methodologies in Network Anomaly Detection Systems (NADS)?

<p>To identify and predict abnormal behavior (C)</p> Signup and view all the answers

What is the Z-score used for in anomaly detection?

<p>To measure the distance of a data point from the mean (C)</p> Signup and view all the answers

What is the primary difference between parametric and non-parametric techniques in statistical anomaly detection models?

<p>Parametric techniques assume data distribution, while non-parametric techniques do not (C)</p> Signup and view all the answers

What is the purpose of density-based algorithms in anomaly detection?

<p>To determine outliers based on a data point's deviation from a specific density threshold (B)</p> Signup and view all the answers

What is the primary advantage of the modified Z-score method?

<p>It is useful for detecting outliers in non-Gaussian distributions (B)</p> Signup and view all the answers

What is the purpose of the semi-supervised statistical approach in anomaly detection?

<p>To create a probabilistic model of network normal behavior and detect deviations from this model (D)</p> Signup and view all the answers

What is the primary purpose of correlation methods in Network Anomaly Detection Systems (NADS)?

<p>To identify and predict abnormal behavior (D)</p> Signup and view all the answers

What is the primary purpose of correlation-based feature selection in anomaly detection?

<p>To select the most relevant features by calculating their correlation with the target variable (A)</p> Signup and view all the answers

What is the main advantage of using correlation methods in NADS?

<p>They can analyze the correlation between different network variables (C)</p> Signup and view all the answers

Which method uses a deep neural network classifier to classify network traffic?

<p>Correlation-based classification (A)</p> Signup and view all the answers

What is the primary goal of NADS?

<p>To identify and predict abnormal behavior in computer networks (D)</p> Signup and view all the answers

What is used to identify anomalies in the data correlation method?

<p>Regression relations (B)</p> Signup and view all the answers

What do logic methodologies aid in NADS?

<p>Identifying and predicting abnormal behavior in computer networks (A)</p> Signup and view all the answers

What is the main difference between correlation-based anomaly detection and correlation-based feature selection?

<p>Anomaly detection analyzes the correlation between different network variables, while feature selection analyzes individual variables (A)</p> Signup and view all the answers

What is the benefit of using correlation methods in complex network environments?

<p>They can enhance the accuracy of anomaly detection (A)</p> Signup and view all the answers

What technique can Fuzzy Logic be used for in network anomaly detection systems?

<p>Unsupervised Anomaly Detection (B)</p> Signup and view all the answers

What is the primary function of automation in AI-driven anomaly detection algorithms?

<p>Automate dataset analysis (C)</p> Signup and view all the answers

What type of networks are used in NADS for unsupervised anomaly detection?

<p>Artificial Neural Networks (ANNs) (C)</p> Signup and view all the answers

What is the purpose of Fuzzy Logic in NADS?

<p>To determine if malicious activity is occurring on a network (B)</p> Signup and view all the answers

What is the advantage of using AI in NADS?

<p>Reduced human analyst workload and improved anomaly detection accuracy (D)</p> Signup and view all the answers

What is the role of machine learning in NADS?

<p>To analyze network traffic and identify anomalies (A)</p> Signup and view all the answers

What is the purpose of real-time analysis in AI-driven anomaly detection?

<p>To allow for immediate detection of anomalies and quick response times (A)</p> Signup and view all the answers

What is the role of Genetic Algorithms in Fuzzy Logic?

<p>To create a network profile using recent data (D)</p> Signup and view all the answers

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