http://www.corpus4u.com/forum_view.asp?forum_id=7&view_id=1471
**Keyword List**
In addition to generating word lists, AntConc can compare the words that appear in the target files with the words that appear in a 'reference corpus' to generate a list of "Keywords" that are unusually frequent (or infrequent) in the target files.
To produce a keyword list, a user needs to perform the following actions:
1) Select a set of target files.
2) Go to the 'Preferences' menu and chose the 'Keyword Preferences' option.
3) Choose a statistical measure to assess the 'keyness' of the target file words. The default setting of Log Likelihood is recommended.
4) Choose a threshold for the number of keywords to be displayed.
5) Choose whether or not to view 'Negative Keywords' (target file words with an unusually low frequency compared with the frequency in the reference corpus)
6) Choose a reference corpus of text (.txt) files, in the same manner that the target files are chosen.
7) The reference corpus directory will be shown (if appropriate), and the list of reference corpus files will appear at the bottom of the Keyword Preferences option menu.
8) Click 'OK' in the Keyword Preferences menu, and return to the main Keywords window.
9) Choose suitable options for displaying the list of generated Keywords (in a similar manner to the options for generating a Word List).
10) Press the 'Start' button.
At any time, the generation of the keyword list can be halted using the 'Stop' button.
Clicking on the keyword will generate a set of KWIC lines using the text as the search term.
**Keyword List**
In addition to generating word lists, AntConc can compare the words that appear in the target files with the words that appear in a 'reference corpus' to generate a list of "Keywords" that are unusually frequent (or infrequent) in the target files.
To produce a keyword list, a user needs to perform the following actions:
1) Select a set of target files.
2) Go to the 'Preferences' menu and chose the 'Keyword Preferences' option.
3) Choose a statistical measure to assess the 'keyness' of the target file words. The default setting of Log Likelihood is recommended.
4) Choose a threshold for the number of keywords to be displayed.
5) Choose whether or not to view 'Negative Keywords' (target file words with an unusually low frequency compared with the frequency in the reference corpus)
6) Choose a reference corpus of text (.txt) files, in the same manner that the target files are chosen.
7) The reference corpus directory will be shown (if appropriate), and the list of reference corpus files will appear at the bottom of the Keyword Preferences option menu.
8) Click 'OK' in the Keyword Preferences menu, and return to the main Keywords window.
9) Choose suitable options for displaying the list of generated Keywords (in a similar manner to the options for generating a Word List).
10) Press the 'Start' button.
At any time, the generation of the keyword list can be halted using the 'Stop' button.
Clicking on the keyword will generate a set of KWIC lines using the text as the search term.
