Return single item for each matching field

Elastic Stack Elasticsearch
1

I currently index product data e.g. part #, description, price etc.

Certain products can exist in a group which is also marked as a property on each product e.g. group = 'shirts'

I was wondering if it's possible when running a search to return all matching items but for those in a specific group just return the highest scoring item? So as an example if I had the following:

  • Product1
  • Description: "Yellow Shirt"
  • Group: "shirts"
  • Product2
  • Description: "Blue Shirt"
  • Group: "shirts"
  • Product3
  • Description: "Red Shirt"
  • Group: "shirts"
  • Product 4
  • Description: Black Shirt"
  • Group:

And someone runs a search for "Shirt" then only Product4 and the highest scoring of those items in the "shirts" group would get returned.

Thanks for your help

2

Hi,

What you should do is take a look at the section called "Controlling Relevance" in the Definitive Guide:

https://www.elastic.co/guide/en/elasticsearch/guide/current/controlling-relevance.html

At index time you can add a field to boost product 4, then at query time you can use that field to boost its score.