Keyword selection |
1. How to use keywords: Nouns as keywords |
Used 60 (59%) |
Not used 41 (41%) |
2. How to use keywords: Nouns, adjectives, and adverbs as common keywords |
Used 43 (43%) |
Not used 58 (57%) |
3. How to use keywords: Sentences as keywords |
Used 28 (28%) |
Not used 73 (72%) |
Boolean logic query |
How to reduce the scope of data and whether to use the operators “AND”, “OR”, and “NOT” |
Used 27 (27%) |
Not used 74(73%) |
Unlimited scope for query |
1. Whether to limit the scope of the query: Limit the date of the unnamed title |
Yes 2 (2%) |
No 99 (98%) |
2. Whether to restrict the scope of the query: Limit the data type |
Yes 12 (12%) |
No 89 (88%) |
3. Whether to limit the scope of the query: Limit the language |
Yes 2 (2%) |
No 99 (98%) |