Podcast
Questions and Answers
What is a key challenge in data integration systems when dealing with conflicting data?
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?
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?
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?
In the context of data integration, what role does source dependence play?
What is the primary reason for considering a value as true in a data integration system?
What is the primary reason for considering a value as true in a data integration system?
What is the main problem addressed in the text?
What is the main problem addressed in the text?
What can make it difficult to distinguish the true value from conflicting information?
What can make it difficult to distinguish the true value from conflicting information?
What approach does the paper present to address truth discovery from conflicting information?
What approach does the paper present to address truth discovery from conflicting information?
In which situations is it very likely that one data source copies from another according to the text?
In which situations is it very likely that one data source copies from another according to the text?
What is crucial for data integration systems to provide quality data to users?
What is crucial for data integration systems to provide quality data to users?
