Correcting user spelling mistakes

One of the simplest ways to improve the user search experience is to correct spelling mistakes either automatically, or by just showing the correct query phrase and allowing the user to use it. For example, this is what Google shows us when we type in elasticsaerch instead of Elasticsearch:

Starting from version 0.90.0 Beta1, Elasticsearch allows us to use the suggest API to correct user spelling mistakes. With the newer versions of Elasticsearch, the API was changed, bringing new features and becoming more and more powerful. In this section, we will try to bring you a comprehensive guide on how to use the suggest API provided by Elasticsearch, both in simple use cases and in ones that require more configuration.

Testing data

For the purposes of this section, we need a bit more data than a few documents. In order to get the data, we have decided to index some news documents from Wikipedia dump.

Let's follow the given steps for downloading and importing...