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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif";color:#1F497D">Hi Thilo,<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">By default frequency list tables use the MySQL case-insensitive collation. This collation is, unfortunately, also accent-insensitive.<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">You can switch to case-sensitive mode in “Corpus settings” but please take note of the warning in the UI “if you change this setting, you must delete and recreate
all frequency lists and delete cached databases”. Case-sensitive mode is also accent-sensitive.<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">This is a limitation in the collations provided by MySQL: ideally, we’d want to be able to switch case-sensitivity and diacritic-sensitivity independently,
but the choice of collations you get don’t afford that. <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>
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<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""> cwb-bounces@liste.sslmit.unibo.it [mailto:cwb-bounces@liste.sslmit.unibo.it]
<b>On Behalf Of </b>Thilo Wiertz<br>
<b>Sent:</b> 17 August 2016 15:13<br>
<b>To:</b> Open source development of the Corpus WorkBench<br>
<b>Subject:</b> [CWB] UTF corpus and frequency list issue<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">On another issue (that most likely has nothing to do with my previous mail):<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">I am using a utf-coded corpus that contains german characters such as ä, ö, ü, ß. While this does not cause trouble, e.g. in standard queries, there seems to be an issue in frequency lists. Just one example: in a newspaper corpus, the term
"sägte" (as in he "sawed") is listed way up with a frequency of 90,000. Actually clicking on the word gives the correct occurence of the term – which is only one. <o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">What the calculation is confusing is the term "sagte" (said) with "sägte" ("a" instead of the "ä"). Similar examples occur as frequency list somehow seems to like awkward but rare spellings – so that a football transcription
<i>Ri - "bé" - ry </i>links the search result for "be" ;-).<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Best wishes,<o:p></o:p></p>
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<p class="MsoNormal">Thilo<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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