1. What is the advantage of the F1 measure?
In information retrieval and text categorisation the F1 measure is commonly used for determining classification effectiveness and has the advantage of giving equal weight to precision and recall [21].
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2. What is the way to compute word weights?
A well known approach for computing word weights is the term frequency inverse document frequency (tf-idf) weighting [3] which assigns the weight to a word in a document in proportion to the number of occurrences of the word in the document and in inverse proportion to the number of documents in the collection for which the word occurs at least once.
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3. What is the key benefit of N-Gram-based matching?
The key benefit of N-Gram-based matching derives from its very nature: since every string is decomposed into small parts any errors that are present tend to affect only a limited number of those parts leaving the remainder intact.
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4. What is the fitness of a rule for a particular category?
When evolving a rule for a particular category c the fitness depends on the number of documents in the category where the rule is true and the number of documents outside the category where the rule is true.
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