CS 3308 -Discussion Forum 4

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School

University of the People**We aren't endorsed by this school

Course

CS 3308

Subject

Computer Science

Date

Dec 18, 2024

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Uploaded by MasterHerring4634

1Determination and calculation of IDF involve understanding the very purpose of IDF: a measure of the importance of a term within collection. Calculations of IDF start with the determination of the total number of documents, N, followed by counting the documents which contain the term in question, df(t). Thus, the formula is:This calculation gives higher weight to those terms that appear in fewer documents; it denotes their importance because of their rarity.Basically, the difference between the two varieties will come from the differing needs to search for something. In most of the cases when structured metadata fields like dates, authors, or categories are available, the parametric indexes will be employed. They use data structures like B-trees or hash maps that enable sorting and filtering for such attributes useful in queries where the conditions to be satisfied are more than text content. (Manning et al., 2009)While a zone index refers to the partitioning of the document according to predefined sections or zones, such as titles, abstracts, or body text, it thereafter enables searching within certain parts of the document. Tagging these sections will allow zone indexes to support the ability of users to specify more detailed queries, such as finding a term only in the title or abstract. While the

2parametric indexes refer to metadata, the zone indexes refer to sections of the documents that result in target searches.Word count:413 wordsReferenceManning, C.D., Raghaven, P., & Schütze, H. (2009). Chapter 6: Scoring, Term Weighting and theVector Space Model. Cambridge, MA: Cambridge University Press. Retrieved September 30, 2024, from http://nlp.stanford.edu/IR-book/information-retrieval-book.html