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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif;color:#1F497D;mso-fareast-language:EN-US">Hi Philipp,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif;color:#1F497D;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif;color:#1F497D;mso-fareast-language:EN-US">Aha! That (the collocation discount applying to other things) is a bug I fixed in 3.3. I’ve just backported the fix to 3.2.43 in the
repo.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif;color:#1F497D;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif;color:#1F497D;mso-fareast-language:EN-US">best<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif;color:#1F497D;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif;color:#1F497D;mso-fareast-language:EN-US">Andrew.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif;color:#1F497D;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif">From:</span></b><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif"> cwb-bounces@sslmit.unibo.it <cwb-bounces@sslmit.unibo.it>
<b>On Behalf Of </b>Philipp Heinrich<br>
<b>Sent:</b> 08 April 2022 11:11<br>
<b>To:</b> Open source development of the Corpus WorkBench <cwb@sslmit.unibo.it><br>
<b>Cc:</b> Fabian Schäfer <fabian.schaefer@fau.de><br>
<b>Subject:</b> Re: [CWB] Problems with CQPweb frequency list permissions<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p>Thanks, Stephanie, for your help and to Andrew for his explanations.<o:p></o:p></p>
<p>I already thought that there might be a difference between privileges for frequency list creation and other ad hoc databases, but I (as a more or less sane person) had not searched at the bottom of the user page for further privileges. Instead I had commented
out the relevant bit in db-lib.php<o:p></o:p></p>
<blockquote style="margin-top:5.0pt;margin-bottom:5.0pt">
<p style="mso-margin-top-alt:5.0pt;margin-right:36.0pt;margin-bottom:5.0pt;margin-left:36.0pt">
# if ($num_of_rows > $table_max)<br>
# {<br>
# unregister_db_process();<br>
# exiterror("The action you have requested uses up a lot of diskspace.\n"<br>
# . "Your limit is currently set to $table_max instances.\n"<br>
# . "Please contact your system administrator if you need access to the information you requested."<br>
# );<br>
# }<o:p></o:p></p>
</blockquote>
<p>which did the job. (Or rather, this was done by a more daring colleague of mine.)<o:p></o:p></p>
<p>It seems to me though that – at least in the outdated v3.2.41 running on our server – the $table_max value is effectively divided by four also for frequency breakdowns.
<o:p></o:p></p>
<blockquote style="margin-top:5.0pt;margin-bottom:5.0pt">
<blockquote style="margin-top:5.0pt;margin-bottom:5.0pt">
<pre style="mso-margin-top-alt:5.0pt;margin-right:72.0pt;margin-bottom:5.0pt;margin-left:72.0pt">This is bizarre because (a) a breakdown of 300,000 matches should have less than 1 mio. instances and (b) the user has been explicitly granted the right to build frequency lists of up to 1 billion tokens.<o:p></o:p></pre>
</blockquote>
<pre><o:p> </o:p></pre>
<pre style="mso-margin-top-alt:0cm;margin-right:36.0pt;margin-bottom:0cm;margin-left:36.0pt;margin-bottom:.0001pt">The 1,000,000 limit should allow you to do a frequency breakdown of 300,000 matches, but for a collocation database the # of matches is multiplied by a (default) cost factor of 4, giving an effective table size of 1,200,000 > 1,000,000 rows.<o:p></o:p></pre>
<pre><o:p> </o:p></pre>
</blockquote>
<p>With the value being set to 1,000,000, I can create frequency breakdowns for a query with 241,233 matches – but not for one with 255,249 matches.<o:p></o:p></p>
<p>Thanks again and all the best,<o:p></o:p></p>
<p>Philipp<o:p></o:p></p>
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