{"id":246,"date":"2021-07-12T15:37:48","date_gmt":"2021-07-12T15:37:48","guid":{"rendered":"https:\/\/www.wikitechy.com\/interview-questions\/?p=246"},"modified":"2021-09-14T10:09:26","modified_gmt":"2021-09-14T10:09:26","slug":"how-to-optimize-apache-solr-boost-factors-using-genetic-algorithms","status":"publish","type":"post","link":"https:\/\/www.wikitechy.com\/interview-questions\/apache-solr\/how-to-optimize-apache-solr-boost-factors-using-genetic-algorithms\/","title":{"rendered":"How to optimize Apache Solr boost factors using genetic algorithms ?"},"content":{"rendered":"<div class=\"TextHeading\">\n<div class=\"hddn\">\n<h2 id=\"optimize-apache-solr-boost-factors\" class=\"color-purple\" style=\"text-align: justify;\">Optimize Apache Solr boost Factors:<\/h2>\n<\/div>\n<\/div>\n<div class=\"row\">\n<div class=\"col-sm-12\">\n<div class=\"ImageContent\" style=\"text-align: justify;\">\n<div class=\"hddn\"><img fetchpriority=\"high\" decoding=\"async\" class=\"aligncenter size-medium\" src=\"https:\/\/cdn.wikitechy.com\/interview-questions\/apache-solr\/optimize-apache-solr.png\" alt=\"Optimize apache solr\" width=\"933\" height=\"690\" \/><\/div>\n<\/div>\n<div class=\"TextHeading\" style=\"text-align: justify;\">\n<div class=\"hddn\">\n<h2 id=\"the-problem-to-solve\" class=\"color-purple\">The problem to solve:<\/h2>\n<\/div>\n<\/div>\n<div class=\"Content\" style=\"text-align: justify;\">\n<div class=\"hddn\">\n<ul>\n<li>When running search indexes with Solr, you might stumble upon is that you have various fields in your documents and you\u2019ve to adjust their weights to get reasonable results.<\/li>\n<\/ul>\n<\/div>\n<\/div>\n<div class=\"Content\" style=\"text-align: justify;\">\n<div class=\"hddn\">\n<ul>\n<li>Finding those \u201cboosting\u201d values can be quite complex when you have many fields and many scenarios.<\/li>\n<li>Usually getting the values right is a task for very experienced integrators.<\/li>\n<\/ul>\n<\/div>\n<\/div>\n<div class=\"CodeContent\" style=\"text-align: justify;\">\n<div class=\"hddn\">\n<figure class=\"highlight\"><div class=\"code-embed-wrapper\"> <div class=\"code-embed-infos\"> <\/div> <pre class=\"language-markdown code-embed-pre line-numbers\"  data-start=\"1\" data-line-offset=\"0\"><code class=\"language-markdown code-embed-code\">\/Solr\/select?defType=dismax&q=my+query<br\/>&qf=title^**42**+description^**23**+footnotes^**5**+dalmatiners^**101**+foo^**9001**+comments<\/code><\/pre> <\/div><\/figure>\n<\/div>\n<\/div>\n<div class=\"Content\" style=\"text-align: justify;\">\n<div class=\"hddn\">\n<ul>\n<li>Looking at it from a more technical perspective \u2013 when your Solr query looks like the one above, the question you\u2019ve to answer is how the values for the highlighted numbers should look like to get reasonable results.<\/li>\n<\/ul>\n<\/div>\n<\/div>\n<div class=\"TextHeading\" style=\"text-align: justify;\">\n<div class=\"hddn\">\n<h2 id=\"measuring-reasonable\" class=\"color-purple\">Measuring \u201creasonable\u201d:<\/h2>\n<\/div>\n<\/div>\n<div class=\"Content\">\n<div class=\"hddn\">\n<ul style=\"text-align: justify;\">\n<li style=\"list-style-type: none;\">\n<ul>\n<li>In order to solve the problem answer what we expect the outcome to look like.<\/li>\n<li>In other words, we\u2019ve to measure how reasonable a specific solution is.\n<ul>\n<li>For a search engine this can be done with some sample queries and some expectations along with that.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<ul>\n<li style=\"text-align: justify;\">The expectation could come in a form that we explicitly tell which documents we expect in the result lists of specific queries (and at predefined positions).<\/li>\n<li style=\"text-align: justify;\">We can simple test agains the expectations and check whether or not specific boost factor values actually satisfy them.<\/li>\n<\/ul>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p> Answer:When running search indexes with Solr, you might stumble upon is that you 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