Understanding Accuracy and Dependence in Data Sources
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Questions and Answers

What is the main difference between the model discussed and theirs?

  • Use of dampening factor
  • Consideration of accuracy
  • Handling dependence between sources (correct)
  • Application of principled fashion
  • How does TRUTH FINDER address the possible dependence between sources?

  • By applying a principled fashion
  • By ignoring the dependence
  • By increasing the accuracy of sources
  • By using a dampening factor (correct)
  • In the motivating example, what issue arises with TRUTH FINDER's approach to source dependence?

  • It underestimates the accuracy of all sources
  • It incorrectly decides that all values provided by S3 are true (correct)
  • It overestimates the accuracy of all sources
  • It fails to consider source accuracy altogether
  • How does the model discussed handle dependence between sources?

    <p>By examining the probability of dependence</p> Signup and view all the answers

    What does the model discussed consider when examining the probability of dependence between data sources?

    <p>The probability that a pair of data sources are dependent</p> Signup and view all the answers

    What metric is used to compute confidence of affiliations in the motivating example?

    <p>Precision score</p> Signup and view all the answers

    What does 'f (d), d ∈ [0, 1], as the percentage of false values R1 whose distribution probability is d' represent?

    <p>Percentage of false values with distribution probability d</p> Signup and view all the answers

    'f (d)' is defined as the percentage of false values whose distribution probability is d; what does it imply about values with 'f (d) = 1'?

    <p>'f (d) = 1' suggests all values are false</p> Signup and view all the answers

    'P r(O ∈ Ōf |S1 ⊥S2 ) = ε(S1 )ε(S2 )' is related to which concept?

    <p>Dependence between sources</p> Signup and view all the answers

    'R1 2 d f (d)' is used to compute what specific probability in the given text?

    <p>'R1 2 d f (d)' determines false-value providers' alignment likelihood</p> Signup and view all the answers

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