Why would you need Classify as well as a search engine?

 Following the release of UNSILO Classify, in May 2017, some users have asked why their site would require both a search engine and UNSILO Classify.
Search engines and Classify serve two fundamentally different purposes. A search engine, such as Google, or Elastic Search or Solr, the most widely used search engines used on corporate websites,  enables users to key in a term or term and find content.
In contract, Classify is a way of grouping content around one topic. This is a very different goal, which remedies many of the deficiencies of standard searching. For example, a search for “kidney disease” in any of the major search engines will not retrieve largely synonymous expressions such as “renal failure”. Using a standard search engine, users have to know in advance the synonyms for each topic, as well as the major syntactic variants. This is particularly the case in science and medicine, where there is frequently a common-language name for something as well as a technical term used by researchers and the medical profession, for example, “heart attack” and “myocardial infarction”.
A glance at MeSH, the well-known classification system for medical content maintained by the US National Center for Biotechnology Information, shows a large number of synonyms for this topic. They list, at the entry for myocardial infarction:
  • Infarction, Myocardial
  • Infarctions, Myocardial
  • Myocardial Infarctions
  • Cardiovascular Stroke
  • Cardiovascular Strokes
  • Stroke, Cardiovascular
  • Strokes, Cardiovascular
  • Heart Attack
  • Heart Attacks
  • Myocardial Infarct
  • Infarct, Myocardial
  • Infarcts, Myocardial
  • Myocardial Infarcts
Search engines typically retrieve simple syntactic variants of a phrase – for example, Google will typically retrieve “myocardial infarctions” if you search for “myocardial infarction”. But search engines do not provide links to other synonyms, such as “heart attack” when the user searches for “myocardial infarction”.
Using UNSILO Classify, makes it possible to create a collection using all related terms for a subject. Classify takes advantage of the underlying concept engine’s ability to identify terms and phrases that have similar meaning. Using Classify does not remove the need for a search engine – users will still want to be able to search for a term or terms – but it provides a ready-built collection of content that can be run as frequently as required without the need for any human expertise each time it is run.

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