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Alan Orth 2018-05-17 12:37:21 +03:00
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9
content/posts/2018-05.md
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@ -278,4 +278,11 @@ ga('send', 'pageview', {
- Testing reconciliation of countries against Solr via conciliator, I notice that `CÔTE D'IVOIRE` doesn't match `COTE D'IVOIRE`, whereas with reconcile-csv it does
- Also, when reconciling regions against Solr via conciliator `EASTERN AFRICA` doesn't match `EAST AFRICA`, whereas with reconcile-csv it does
- And `SOUTH AMERICA` matches both `SOUTH ASIA` and `SOUTH AMERICA` with the same match score of 2... WTF.
- It could be that I just need to tune the index or query filters in Solr (currently using the example `text_en` field type)
- It could be that I just need to tune the query filter in Solr (currently using the example `text_en` field type)
- Oh sweet, it turns out that the issue with searching for characters with accents is called "code folding" in Solr
- You can use either a [`solr.ASCIIFoldingFilterFactory` filter](https://lucene.apache.org/solr/guide/7_3/language-analysis.html) or a [`solr.MappingCharFilterFactory` charFilter](https://lucene.apache.org/solr/guide/7_3/charfilterfactories.html) mapping against `mapping-FoldToASCII.txt`
- Also see: https://opensourceconnections.com/blog/2017/02/20/solr-utf8/
- Now `CÔTE D'IVOIRE` matches `COTE D'IVOIRE`!
- I'm not sure which method is better, perhaps the `solr.ASCIIFoldingFilterFactory` filter because it doesn't require copying the `mapping-FoldToASCII.txt` file
- And actually I'm not entirely sure about the order of filtering before tokenizing, etc...
- Ah, I see that `charFilter` must be before the tokenizer because it works on a stream, whereas `filter` operates on tokenized input so it must come after the tokenizer

15
docs/2018-05/index.html
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@ -27,7 +27,7 @@ Also, I switched it to use OpenJDK instead of Oracle Java, as well as re-worked
<meta property="article:published_time" content="2018-05-01T16:43:54&#43;03:00"/>
<meta property="article:modified_time" content="2018-05-17T09:45:45&#43;03:00"/>
<meta property="article:modified_time" content="2018-05-17T10:51:46&#43;03:00"/>
@ -65,9 +65,9 @@ Also, I switched it to use OpenJDK instead of Oracle Java, as well as re-worked
"@type": "BlogPosting",
"headline": "May, 2018",
"url": "https://alanorth.github.io/cgspace-notes/2018-05/",
"wordCount": "2164",
"wordCount": "2267",
"datePublished": "2018-05-01T16:43:54&#43;03:00",
"dateModified": "2018-05-17T09:45:45&#43;03:00",
"dateModified": "2018-05-17T10:51:46&#43;03:00",
"author": {
"@type": "Person",
"name": "Alan Orth"
@ -461,7 +461,14 @@ $ ./bin/post -c countries ~/src/git/DSpace/2018-05-10-countries.csv
<li>Testing reconciliation of countries against Solr via conciliator, I notice that <code>CÔTE D'IVOIRE</code> doesn&rsquo;t match <code>COTE D'IVOIRE</code>, whereas with reconcile-csv it does</li>
<li>Also, when reconciling regions against Solr via conciliator <code>EASTERN AFRICA</code> doesn&rsquo;t match <code>EAST AFRICA</code>, whereas with reconcile-csv it does</li>
<li>And <code>SOUTH AMERICA</code> matches both <code>SOUTH ASIA</code> and <code>SOUTH AMERICA</code> with the same match score of 2&hellip; WTF.</li>
<li>It could be that I just need to tune the index or query filters in Solr (currently using the example <code>text_en</code> field type)</li>
<li>It could be that I just need to tune the query filter in Solr (currently using the example <code>text_en</code> field type)</li>
<li>Oh sweet, it turns out that the issue with searching for characters with accents is called &ldquo;code folding&rdquo; in Solr</li>
<li>You can use either a <a href="https://lucene.apache.org/solr/guide/7_3/language-analysis.html"><code>solr.ASCIIFoldingFilterFactory</code> filter</a> or a <a href="https://lucene.apache.org/solr/guide/7_3/charfilterfactories.html"><code>solr.MappingCharFilterFactory</code> charFilter</a> mapping against <code>mapping-FoldToASCII.txt</code></li>
<li>Also see: <a href="https://opensourceconnections.com/blog/2017/02/20/solr-utf8/">https://opensourceconnections.com/blog/2017/02/20/solr-utf8/</a></li>
<li>Now <code>CÔTE D'IVOIRE</code> matches <code>COTE D'IVOIRE</code>!</li>
<li>I&rsquo;m not sure which method is better, perhaps the <code>solr.ASCIIFoldingFilterFactory</code> filter because it doesn&rsquo;t require copying the <code>mapping-FoldToASCII.txt</code> file</li>
<li>And actually I&rsquo;m not entirely sure about the order of filtering before tokenizing, etc&hellip;</li>
<li>Ah, I see that <code>charFilter</code> must be before the tokenizer because it works on a stream, whereas <code>filter</code> operates on tokenized input so it must come after the tokenizer</li>
</ul>

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docs/sitemap.xml
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@ -4,7 +4,7 @@
<url>
<loc>https://alanorth.github.io/cgspace-notes/2018-05/</loc>
<lastmod>2018-05-17T09:45:45+03:00</lastmod>
<lastmod>2018-05-17T10:51:46+03:00</lastmod>
</url>
<url>
@ -164,7 +164,7 @@
<url>
<loc>https://alanorth.github.io/cgspace-notes/</loc>
<lastmod>2018-05-17T09:45:45+03:00</lastmod>
<lastmod>2018-05-17T10:51:46+03:00</lastmod>
<priority>0</priority>
</url>
@ -175,7 +175,7 @@
<url>
<loc>https://alanorth.github.io/cgspace-notes/tags/notes/</loc>
<lastmod>2018-05-17T09:45:45+03:00</lastmod>
<lastmod>2018-05-17T10:51:46+03:00</lastmod>
<priority>0</priority>
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@ -187,13 +187,13 @@
<url>
<loc>https://alanorth.github.io/cgspace-notes/posts/</loc>
<lastmod>2018-05-17T09:45:45+03:00</lastmod>
<lastmod>2018-05-17T10:51:46+03:00</lastmod>
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<lastmod>2018-05-17T09:45:45+03:00</lastmod>
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