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

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

<p>Precision score (D)</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 (A)</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 (B)</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 (D)</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 (B)</p> Signup and view all the answers

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