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Integrating Conflicting Data: Source Dependence

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Integrating Conflicting Data: Source Dependence

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Questions and Answers

What is a key challenge in data integration systems when dealing with conflicting data?

Ignoring conflicting values from different sources

Resolving conflicts and discovering true values (correct)

Ensuring all sources provide the same set of values

Copying information from one source to another

How do data integration systems typically identify true values from conflicting information?

By selecting the values provided by the minority of sources

By applying voting and choosing the values provided by the majority of sources (correct)

By choosing the values with the highest numerical value

By ignoring all values and starting from scratch

Why can truth discovery be extremely tricky in data integration systems?

Because all sources always provide accurate information

Because false values can be spread through copying, making it challenging to discern the truth (correct)

Because false values are never spread through copying

Due to the limited number of sources available

In the context of data integration, what role does source dependence play?

Source dependence influences how data from multiple sources is integrated Signup and view all the answers

What is the primary reason for considering a value as true in a data integration system?

Being provided by the majority of sources Signup and view all the answers

What is the main problem addressed in the text?

Resolving conflicts and discovering true values Signup and view all the answers

What can make it difficult to distinguish the true value from conflicting information?

Copying of values between sources Signup and view all the answers

What approach does the paper present to address truth discovery from conflicting information?

Bayesian analysis Signup and view all the answers

In which situations is it very likely that one data source copies from another according to the text?

When they provide many common values rarely seen in other sources Signup and view all the answers

What is crucial for data integration systems to provide quality data to users?