omputer Science For the following values, explain whether we can efficiently get the value from a default (standard) inverted index postings file. By efficiently we mean with one lookup--not scanning the entire index. Symbol Value |d| total number of terms in a given doc |d|u number of unique terms in a given doc df(w) number of documents term w appears in c(w, C) number of times term w occurs in corpus C c(w, d) number of times term w occurs in document d p(w, d) probability of term w occurring in document d a. p(w,d) b. |d|u c. |d| d. df(w) e. c(w,C) f. c(w,d)
omputer Science For the following values, explain whether we can efficiently get the value from a default (standard) inverted index postings file. By efficiently we mean with one lookup--not scanning the entire index. Symbol Value |d| total number of terms in a given doc |d|u number of unique terms in a given doc df(w) number of documents term w appears in c(w, C) number of times term w occurs in corpus C c(w, d) number of times term w occurs in document d p(w, d) probability of term w occurring in document d a. p(w,d) b. |d|u c. |d| d. df(w) e. c(w,C) f. c(w,d)
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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Computer Science
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For the following values, explain whether we can efficiently get the value from a default (standard) inverted index postings file. By efficiently we mean with one lookup--not scanning the entire index.
Symbol Value |d| total number of terms in a given doc |d|u number of unique terms in a given doc df(w) number of documents term w appears in c(w, C) number of times term w occurs in corpus C c(w, d) number of times term w occurs in document d p(w, d) probability of term w occurring in document d a. p(w,d)
b. |d|u
c. |d|
d. df(w)
e. c(w,C)
f. c(w,d)
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