What is the best way to design a search engine that can identify similar results if it cannot find an exact match? (mongoDB)

I'm currently developing a question feature on my website that allows users to search for a specific question. For example, if someone searches "how do I cook a cake?" they should be able to find a link to a similar question titled "how do I make a cake?". However, at the moment, the user cannot find the second question when searching for the first one. I have only used the search bar in collection.find({}). How can I solve this issue? Is there an API available that can generate sentences with similar meaning to aid in searching?

Thank you!

javascriptmongodbmongoosemongodb-querysearch-engine

Answer №1

Although not a full-fledged search engine, this solution showcases the best capabilities of MongoDB.

Refer to $text

  1. Create Index
db.articles.createIndex( { subject: "text" } )
  1. Data
db.articles.insertMany( [
     { _id: 1, subject: "coffee", author: "xyz", views: 50 },
     { _id: 2, subject: "Coffee Shopping", author: "efg", views: 5 },
     { _id: 3, subject: "Baking a cake", author: "abc", views: 90  },
     { _id: 4, subject: "baking", author: "xyz", views: 100 },
     { _id: 5, subject: "Café Con Leche", author: "abc", views: 200 },
     { _id: 6, subject: "Сырники", author: "jkl", views: 80 },
     { _id: 7, subject: "coffee and cream", author: "efg", views: 10 },
     { _id: 8, subject: "Cafe con Leche", author: "xyz", views: 10 }
] )
  1. Query
db.articles.find( { $text: { $search: "coffee" } } )
  1. Result
{ _id: 1, subject: 'coffee', author: 'xyz', views: 50 },
{ _id: 7, subject: 'coffee and cream', author: 'efg', views: 10 },
{ _id: 2, subject: 'Coffee Shopping', author: 'efg', views: 5 }

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