Re: WP-34S: question - Initialization of local registers Message #7 Posted by Marcel Samek on 7 July 2013, 3:54 p.m., in response to message #5 by Walter B
A permuted index takes a set of keywords and automatically indexes every occurrence of each keyword in the entire document. However, instead of just listing the keyword, it puts each occurrence of the keyword in context by listing the words before and after the keywords. It is somewhat related to KWIC indexes.
Here is a pretty good online example:
Erlang permuted index
The first word of the second column is the alphabetized keyword. Any part of the sentence before that keyword is in the first column and any words after they keyword are just listed after the keyword in the second column. The third column is the reference to the location in the document, in your case a page number.
There are variations of the format, but that is the general idea. The manual task is picking all the keywords, but you can do that by simply generating a list of all words used in the document and then deleting all the ones that don't seem appropriate. After that, there are various utilities that can generate a permuted index - although I can imagine that getting the page number reference right will be tricky.
Basically it facilitates manual searching in a way that is not that different than what people do when they are searching electronically. They jump from sentence to sentence that contains a particular keyword and decide from context whether they want to read more in that section or not.
Edited: 7 July 2013, 3:56 p.m.
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