# Most popular recommendation filters

Many websites use filters to refine the results of recommendation algorithms, ensuring that recommendation banners are highly relevant and impactful.

By default, some filters are automatically applied in AB Tasty’s recommendation algorithms:

* The API does not return products flagged as unavailable or inactive in the product feed.

Additionally, a wide range of custom filters can be configured directly on the platform to suit specific business goals. Below is a selection of the most commonly used filters, categorised by strategy and objective.

## Promotions Filters <a href="#h_01jdmj17wgce5tekax7t0eyt8w" id="h_01jdmj17wgce5tekax7t0eyt8w"></a>

**Description:** Include or exclude promotional items based on the time of year or specific page types.\
**Strategy:** All strategies\
**Objective:** Boost conversion rate\
**Type:** Items inclusion or exclusion

## Ratings and Reviews Filters <a href="#h_01jdmj237dcvcdg0f3c6cs4ez5" id="h_01jdmj237dcvcdg0f3c6cs4ez5"></a>

**Description**: Include only items with ratings higher than a set threshold (e.g., 4/5), depending on the availability of ratings and reviews data.\
**Strategy**: All strategies\
**Objectives**: Boost cart additions, increase average order value\
**Type**: Items inclusion

## Brand Filters <a href="#h_01jdmj2pz5gnp2450f2pxc63ys" id="h_01jdmj2pz5gnp2450f2pxc63ys"></a>

**Description**: Prioritise or exclusively include items from specific brands or the same brand as the input item.\
**Strategy**: All strategies\
**Objective**: Increase relevance\
**Type**: Items inclusion

## Custom Availability Filters <a href="#h_01jdmj372tjfc1fa5re9bvgk1y" id="h_01jdmj372tjfc1fa5re9bvgk1y"></a>

**Description**: Recommend items available in specific stores, marketplaces, or stock locations.\
**Strategy**: All strategies\
**Objective**: Increase relevance\
**Type**: Items inclusion

## Exclude User Items (Bought, Cart, Viewed) <a href="#h_01jdmj3rz6cqq10vptsjxg91ms" id="h_01jdmj3rz6cqq10vptsjxg91ms"></a>

**Description**: Exclude items already purchased, added to the cart, or recently viewed by the user.\
**Strategy**: All strategies\
**Objective**: Increase relevance\
**Type**: Items exclusion

## Selected Options Filters <a href="#h_01jdmj48rzna1nsjt8fpge7t6e" id="h_01jdmj48rzna1nsjt8fpge7t6e"></a>

**Description**: Exclude items with fewer than a set number of options available in stock.\
**Strategy**: All strategies\
**Objective**: Increase relevance\
**Type**: Items exclusion

## Exclude Free Items <a href="#h_01jdmj4s5v8qq20f6tbv5bfnep" id="h_01jdmj4s5v8qq20f6tbv5bfnep"></a>

**Description**: Remove gift cards, special packaging, or other "free" items from recommendations.\
**Strategy**: All strategies\
**Objective**: Clean recommendation results\
**Type**: Items exclusion

## Exclude Trash Items <a href="#h_01jdmj5b8m1a1e6hmgfq3400cg" id="h_01jdmj5b8m1a1e6hmgfq3400cg"></a>

**Description**: Exclude items with incomplete data (e.g., no image, missing price, title, description, or URL).\
**Strategy**: All strategies\
**Objective**: Clean recommendation results\
**Type**: Items exclusion

## Higher Price Filters <a href="#h_01jdmj5wpywb3bxh3pftd6w290" id="h_01jdmj5wpywb3bxh3pftd6w290"></a>

**Description**: Include only items priced higher than a given threshold or higher than the input item’s price (e.g., on product pages).\
**Strategy**: Product page\
**Objective**: Boost conversion rate\
**Type**: Items inclusion

## Same (Sub)Category Filters <a href="#h_01jdmj6bvwm2zj16f39k28p637" id="h_01jdmj6bvwm2zj16f39k28p637"></a>

**Description**: Include only items from the same category, subcategory, or product type as the input item (e.g., viewed item, cart item).\
**Strategy**: Product page\
**Objective**: Increase relevance\
**Type**: Items inclusion

## Different Category Filters <a href="#h_01jdmj6v7c10hv1qknw4xqy94a" id="h_01jdmj6v7c10hv1qknw4xqy94a"></a>

**Description**: Exclude items from the same category to promote cross-category navigation.\
**Strategy**: Category page\
**Objective**: Boost average order value\
**Type**: Items exclusion

## Lower Price Filters <a href="#h_01jdmj7cy6mwr0mxhv0trsea2s" id="h_01jdmj7cy6mwr0mxhv0trsea2s"></a>

**Description**: Include only items priced lower than a given threshold or lower than the input item’s price (e.g., on cart pages).\
**Strategy**: Cart page\
**Objective**: Boost average order value\
**Type**: Items inclusion