- Tropical deforestation
B- Tropical deforestation
C- unknown
D- unknown
E- Lanham : Rowman & Littlefield
F- c2006
2. location, status, call #
A- Book Stacks
B-ON THE SHELF
C-
Sd418.3.t76t752006
3.
Deforestation tropics
forest biodiversity conservation tropics
forests and forestry tropic
4. Deforestation tropics
10 entries
5.
A-
with a keyword search, i have goten many results, but most of them are not what i am looking for and with the heading seatch i got less results but more of what i am looking for.
B-
many of the results are straight on what i am searching for and very accurate to what i am looking for.
C-
with the keyword search i noticed that i was getting results that just had the word i place in to search or just partial word results, while the results with the subject i got what i was looking for even if it came up with less results.
the difference i found between the two search method was that the keyword search would have more results but less information than what i would be looking for. the subject search gave me less results but more accurate information to what i am looking for and has more valuable information to receive.
Yes, I think you have the idea. The question is whether you understand why this is so.
ReplyDeleteThere are 2 important elements to subject headings.
1. Unlike keyword searching, which merely machine matches your string of characters to the same strings of characters in the records, subject headings are structured language created by human beings. They are pre-set.
2. When librarians read the books, they assign one or more of these structured headings to the books.
The end result is that the books sit together on the shelves and they also show up under the subject headings in ways that a mere machine match can't provide.
I hope this is clear.