Database System Concepts
Database System Concepts
7th Edition
ISBN: 9780078022159
Author: Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher: McGraw-Hill Education
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(1) Draw the inverted index that would be built for the following document collection. Compare your answer with the given ones and select the correct one.

Doc 1   new home sales top forecasts

Doc 2   home sales rise in july

Doc 3   increase in home sales in july

Doc 4   july new home sales rise

The following picture shows how an inverted index looks like.
Brutus
1
2
4
11
31
45
173
174
Caesar
→
1
2
4
5
6
16 57
132
...
Calpurnia
forecast
home
in
increase
july
new
rise
sale
top
O
<-
2
31
54
101
1
2->3->4
2->3
3
2->3
1->4
2->4
1->2->4
1
forecast
home
1
2->1->3->4
in
july
new
rise
sale
2->3
increase
3
2->3
1->4
2->4
2->1->3->4
top
1
forecast
home
1
1->2->3->4
in
2->3
increase
3
july
2->3->4
new
1->4
rise
sale
top
2->4
1->2->3->4
1
expand button
Transcribed Image Text:The following picture shows how an inverted index looks like. Brutus 1 2 4 11 31 45 173 174 Caesar → 1 2 4 5 6 16 57 132 ... Calpurnia forecast home in increase july new rise sale top O <- 2 31 54 101 1 2->3->4 2->3 3 2->3 1->4 2->4 1->2->4 1 forecast home 1 2->1->3->4 in july new rise sale 2->3 increase 3 2->3 1->4 2->4 2->1->3->4 top 1 forecast home 1 1->2->3->4 in 2->3 increase 3 july 2->3->4 new 1->4 rise sale top 2->4 1->2->3->4 1
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