Data Quality Challenges in Behavioral Analysis
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Questions and Answers

Which of the following is a challenge in analyzing behavioral data such as stylometry extracted from computer-mediated communications?

  • The structured nature of the data
  • The lack of variability in the data
  • The unstructured nature of the data (correct)
  • The inherent stability of human behavioral and cognitive characteristics

    • What is the difference between free actions and fixed actions in human-computer interaction data?

  • Free actions are used for static authentication while fixed actions are used for continuous authentication
  • Free actions are freely generated by a user without following a predefined template while fixed actions refer to sample HCI data generated using predefined templates (correct)
  • Free actions are sample HCI data generated using predefined templates while fixed actions are freely generated by a user
  • Free actions are generated using predefined templates while fixed actions are freely generated by a user

    • What is the equal error rate (EER) used for in assessing the performance of a biometric system?

  • To measure the accuracy of a biometric system in terms of false rejection rate (FRR) and false acceptance rate (FAR)
  • To measure the time to authenticate (TTA)
  • To identify the operating point where FAR equals FRR (correct)
  • To assess the variability of human behavioral and cognitive characteristics

    • Which of the following is NOT a challenge in analyzing behavioral data such as stylometry extracted from computer-mediated communications?

    <p>The structured nature of the data</p> Signup and view all the answers

    What is the primary performance factor for any biometric system?

    <p>False rejection rate</p> Signup and view all the answers

    Why is free actions analysis more challenging than fixed actions analysis in continuous authentication?

    <p>Free actions must be carried out using unseen examples at training time</p> Signup and view all the answers

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