Database System Concepts
7th Edition
ISBN: 9781260084504
Author: Abraham Silberschatz, S. Sudarshan, Abraham, Henry Korth, Silberschatz Abraham, Silberschatz Professor
Publisher: McGraw-Hill Education
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Chapter 8, Problem 13E
Explanation of Solution
Concept of frequency
- Frequency is the logarithm of number of occurrences of the term that is divided by the number of terms in the document.
- The concept of term frequency does not make sense when it comes to small
databases with few attributes with each containing only a few words. - The relevance of any term does not depend on the number of occurrences of the term.
- The logarithmic increase in the term frequency is not a good indicator when the domain is very small...
Explanation of Solution
Similarity of two tuples
- The similarity of two tuples can be measured by cosine similarity metric.
- The only difference is that the values that...
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Chapter 8 Solutions
Database System Concepts
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