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Functional Boosts

Engine Type Supported?
Crawler-based Engine YES
API-based Engine YES

Functional boosts increase result scores based on the value of an integer or float field.

There are 3 types of functional boosts:

Boost Type Description
logarithmic Multiplies the original score by ln(field value)
exponential Multiplies the original score by efield value
linear Multiplies the original score by field value
The query used within your search.
The Engine Key associated with your Engine. Found within your dashboard.
Values can be logarithmic, exponential, or linear. See the above table for more information.
Example - Return the most popular results from the books DocumentType, but first boost the total_purchases field with a logarithmic boost. Crawler based Engines use page as the default DocumentType.
curl -XGET '' \
  -H 'Content-Type: application/json' \
  -d '{
        "engine_key": "YOUR_ENGINE_KEY",
        "q": "brothers",

Supported Field Types

Type Boosting
string No
text No
enum No
integer Yes
float Yes
date No
location No

Stuck? Looking for help? Contact support or check out the Site Search community forum!