Ian,
Thanks for pointing out the oddness in the query I pasted. I've attempted to
modify the code to fix that as well as another glaring oversight, and
hopefully with a little annotation my question will make more sense. Please
do correct any misconceptions I have at any stage.
(: Say we want to retrieve the top most frequently used keyword tied to the
word "water" from our database. I would do it thusly, using the value
lexicon on the element "kwd" that we've created beforehand. :)
let $q := cts:word-query("water")
let $elem := cts:element-values(xs:QName("kwd"), "",
("frequency-order","fragment-frequency"), $q)[1]
let $freq := cts:frequency($elem)
(: Now, I would like to see all documents in my database that use this
retrieved keyword ($elem). My understanding is that the search I perform
should return the same number of results as is indicated by the frequency of
the keyword $elem. I've attempted this by using a cts:and-query of my
original word-query and a cts:element-query :)
let $cnt := xdmp:estimate(cts:search(doc(), cts:and-query( ($q,
cts:element-query(xs:QName("kwd"), $elem)) ) ))
(: When I compare the two numerical results however, I find that they aren't
the same. The search results tend to be greater than the frequency count :)
return concat ($elem, " (freq: ", $freq, ") (search: ", $cnt, ")")
I think my misunderstanding lies in the query I'm using to perform the
search, so it would be great if I could be pointed in the right direction
with regards to that.
Thanks,
-Bilal
From: Ian Small <[EMAIL PROTECTED]>
Date: May 23, 2007 5:47 PM
Subject: RE: [MarkLogic Dev General] Frequency and Search Results in 3.2
To: General Mark Logic Developer Discussion <[email protected]
>
Bilal -
It's not clear what you're trying to accomplish from the code fragment
below, since your use of cts:element-query() on QName kwd as a filter to the
value lexicon on element QName kwd is puzzling to me.
If you'd like to explain what your objective is, we might be able to
suggest a simpler code fragment, and then address why things do or don't
match. At a glance, the code fragment you've provided is (sort of) doing
two different things between the element-values()/frequency call and the
xdmp:estimate() call. But I'd rather start from your objective than try to
unwind this code sample.
Cheers
ian
------------------------------
*From:* [EMAIL PROTECTED] [mailto:
[EMAIL PROTECTED] *On Behalf Of *Bilal Khalid
*Sent:* Wednesday, May 23, 2007 2:40 PM
*To:* [email protected]
*Subject:* [MarkLogic Dev General] Frequency and Search Results in 3.2
Hello All,
I've been trying to resolve the frequency count (retrieved through a
function like cts:element-values) into actual search results in 3.2, but
the number of results does not match the frequency count. The example below
shows the query I've been trying out in CQ.
let $elem := cts:element-values(xs:QName("kwd"), "",
("frequency-order","fragment-frequency"), cts:element-query(xs:QName("kwd"),
"water"))[1]
let $freq := cts:frequency($elem)
let $cnt := xdmp:estimate(cts:search(doc(),
cts:element-query(xs:QName("kwd"), $elem)))
return concat ($elem, " (freq: ", $freq, ") (search: ", $cnt, ")")
Please note that I use cts:element-query in both lexicon and search
queries. The only difference is that the search parameter in the second
query is changed to the first item of the results from the lexicon.
-Bilal
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