<div style="line-height:1.7;color:#000000;font-size:14px;font-family:Arial"><div>Thanks Andrew.</div><div><br></div><div>Sorry for my confusion about CQP and CQPweb ...</div><div><br></div><div>Well, for illustration of "not really executed", let's take the<span style="font-family: Arial, sans-serif; line-height: 1.7;"> query [pos="N.*" & f(word)>100] on the Brown corpus for example, which returns 90,211 matches. In comparison, resetting 100 to 1000 in the previous query returns 7,205 matches (all experimented with BFSU CQPweb). This fact shows that the f() function does work. However, further "Frequency breakdown" reveals that even words with a single occurrence are in the final result set, an evidence that the f() function is not really respected (at least in some operations within CQPweb)</span><span style="font-family: Arial, sans-serif; line-height: 1.7;">. </span></div><div><span style="font-family: Arial, sans-serif; line-height: 1.7;"><br></span></div><div><font face="Arial, sans-serif">I find the dynamic attribute an attractive idea as it would enable CQPweb administrators to extend the CQP query language to suit their particular needs, for instance, using WordNet for some semantic restrictions. There must be some good reasons for removing it from the source but is it possible to have it back?</font></div><div><font face="Arial, sans-serif"><br></font></div><div><font face="Arial, sans-serif">Best,</font></div><div><font face="Arial, sans-serif" style="line-height: 1.7;">Liangping</font><span style="line-height: 1.7;"> </span></div><div style="position:relative;zoom:1"><div style="clear:both"></div></div><div id="divNeteaseMailCard"></div><br>At 2015-10-06 06:35:25, "Hardie, Andrew" <a.hardie@lancaster.ac.uk> wrote:<br> <blockquote id="isReplyContent" style="PADDING-LEFT: 1ex; MARGIN: 0px 0px 0px 0.8ex; BORDER-LEFT: #ccc 1px solid">
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif";color:#1F497D">This is a CQP issue rather than a CQPweb issue, I think. Anyway…<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif";color:#1F497D">When you say, “doesn’t seem to work” , “not really executed”, what do you mean? That the results were not as desired? Can you give an example of a case where
there was a difference between what you expected and what you got?<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif";color:#1F497D">To explain the background:
<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif";color:#1F497D">True dynamic attributes, i.e. user-created functions that evaluate by passing their arguments to an external program, no longer exist.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif";color:#1F497D">However, CQP’s builtin functions (which is the current terminology for what Christ 1994 calls “predefined dynamic attributes”) are implemented using the parameter-passing
system for dynamic attributes (but they are not real dynamic attributes because they do not use an external program). So a lot of the code for dynamic attributes survives to support these functions, even though you can’t have
<i>REAL</i> dynamic attributes.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif";color:#1F497D">These builtin functions are defined in cqp/builtins.c lines 50 to 70, and implemented on lines 229 to 518 . f() is one of them.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif";color:#1F497D">Finally: Christ (1994) is of historical interest only. All the builtin functions
<i>except f()</i> are documented in the current CQP tutorial, however, which means they are still part of the query language (not sure why f() doesn’t get mentioned, Stefan may be able to shed light)<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif";color:#1F497D">best
<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif";color:#1F497D">Andrew.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><b><span lang="EN-US" style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span lang="EN-US" style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> <a href="mailto:cwb-bounces@sslmit.unibo.it">cwb-bounces@sslmit.unibo.it</a> [mailto:<a href="mailto:cwb-bounces@sslmit.unibo.it">cwb-bounces@sslmit.unibo.it</a>]
<b>On Behalf Of </b>(Ray) WU Liangping<br>
<b>Sent:</b> 05 October 2015 19:17<br>
<b>To:</b> <a href="mailto:cwb@sslmit.unibo.it">cwb@sslmit.unibo.it</a><br>
<b>Subject:</b> [CWB] Does CQPweb support dynamic attributes now?<o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><span style="font-size:10.5pt;font-family:"Arial","sans-serif";color:black">hi all,<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.5pt;font-family:"Arial","sans-serif";color:black"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.5pt;font-family:"Arial","sans-serif";color:black">I tried the query [pos="N.*" & f(word)>100] on some corpora but the frequency limitation doesn't seem to work. <o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.5pt;font-family:"Arial","sans-serif";color:black">According to Christ (1994: 6) , f is a predefined dynamic attribute. However, the query was happily accepted by CQPweb but not really executed.<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.5pt;font-family:"Arial","sans-serif";color:black">I noticed in cwb-decode.c that a comment reads like this "case ATT_DYN: /* dynamical attributes aren't implemented */".<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.5pt;font-family:"Arial","sans-serif";color:black">So that is where the answer lies?<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.5pt;font-family:"Arial","sans-serif";color:black"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.5pt;font-family:"Arial","sans-serif";color:black">Thanks for any tips.<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.5pt;font-family:"Arial","sans-serif";color:black">Wu Liangping<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.5pt;font-family:"Arial","sans-serif";color:black"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.5pt;font-family:"Arial","sans-serif";color:black">Reference<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.5pt;font-family:"Arial","sans-serif";color:black">Christ, Oliver (1994). A modular and flexible architecture for an integrated corpus query system. In Papers in Computational Lexicography (COMPLEX '94), pages 22–32,
Budapest, Hungary.<o:p></o:p></span></p>
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