Learn how to create and edit a recommendation strategy, and define the settings for the strategy.

Creating a recommendation strategy

To create a recommendation strategy:

In the Frosmo Control Panel, in the sidebar, select More > Recommendations.
Click Create recommendation strategy.
Define the recommendation strategy settings.
When you're done, click Save. The Frosmo Platform generates the recommendation data for the new strategy. The data generation may take several minutes.

The platform automatically regenerates the recommendation data at regular time intervals. The exact regeneration frequency depends on the algorithms used by a strategy.
Once the recommendation data has been successfully generated, preview the results.
To return to the recommendation strategies list, click Cancel.

You can now use the strategy in a modification to build and display a recommendation.

Editing a recommendation strategy

Be careful when editing a recommendation strategy that is in use, since changes to the strategy affect all modifications that use it. In particular, if you edit a strategy that is currently used in an active variation of an active modification, the changes will affect all visitors who see the variation content.

If you want to make major changes to a strategy, such as change its algorithms or filters, it is recommended that you first duplicate the strategy and associated modification, test the changes with the duplicates, and update the original strategy only after you're happy with how its duplicate works. You might even consider switching to using the duplicate strategy, while leaving the original unchanged. This way, you can always revert back to the original strategy, if necessary.

To edit a recommendation strategy:

In the Frosmo Control Panel, in the sidebar, select More > Recommendations.
In the recommendation strategies list, find the strategy you want to edit, and click the strategy name.
Edit the recommendation strategy settings.
When you're done, click Save. The Frosmo Platform regenerates the recommendation data for the updated strategy. The data generation may take several minutes.

The platform automatically regenerates the recommendation data at regular time intervals. The exact regeneration frequency depends on the algorithms used by a strategy.
Once the recommendation data has been successfully generated, preview the results.
To return to the recommendation strategies list, click Cancel.

Previewing recommendation results

The recommendation data returned by a strategy is based on the following factors:

Fixed items defined for the strategy.
Results generated by the algorithms that the strategy uses.
Filters and affinity the strategy applies to the algorithm results.

Moreover, the algorithms, filters, and affinity depend on dynamic contextual factors such as the particular web page on which the recommendation gets displayed or the individual visitor who sees the recommendation. For example, a smartphone product page will show different recommendations than a toilet brush product page, and a visitor with a strong affinity for Apple devices will see different recommendations than a visitor with a strong affinity for Samsung devices.

You can preview the recommendation data for a strategy in the Frosmo Control Panel. You can simulate different real-world situations by defining the relevant contextual information for the preview.

To preview the recommendation data for a strategy:

In the Frosmo Control Panel, in the sidebar, select More > Recommendations.
In the recommendation strategies list, find the strategy whose data you want to preview, and click the strategy name.
In the Preview section, define the necessary contextual information for generating the preview:
- Visitor ID: Optionally, if you want to preview the data as personalized for an individual visitor, enter the visitor's local Frosmo ID. If you do not enter an ID, the data is not personalized. This field only has effect when the strategy uses a "by the visitor" algorithm or applies affinity.
- Depending on the selected page type, define the appropriate information:
  - Cart items: Define one or more items to simulate the shopping cart contents. To define an item, start typing its ID or name in the field, select the item from the autocomplete list, and click Add.
  - Categories: Define one or more categories to simulate a category page. These are the categories whose items are shown on the simulated category page. To define a category, start typing its name in the field, select the category from the autocomplete list, and click Add.
  - Item: Define the item whose page you want to simulate. To define the item, start typing its ID or name in the field, and select the item from the autocomplete list.
  - Search results: Define one or more items and/or categories to simulate the search results. The former represent the matches returned by the search, while the latter represent the categories to which the returned items belong. To define an item, start typing its ID or name in the item field, select the item from the autocomplete list, and click Add. To define a category, start typing its name in the category field, select the category from the autocomplete list, and click Add.
If you edit the strategy in between previewing the recommendation data, you need to regenerate the data after each edit. To regenerate the data, click Generate, or save the strategy.
Click Show.
View the data.
The preview displays the recommended items in slot order, that is, in the order in which the items are recommended to visitors. The preview also displays selected information, such as ID and name, for each item. Finally, the preview provides two links for each item: one to the item details page in the Frosmo Control Panel, and the other to the item page on the site, such as a product page.

Recommendation strategy settings

The following table describes the settings you can define for a recommendation strategy in the Frosmo Control Panel.

Table: Recommendation strategy settings

Setting	Description	Role
Name	Enter a name for the strategy.	Required
ID	The Control Panel automatically generates a unique ID for the strategy based on the name. You can edit the ID when you create a new strategy, but only until you save the strategy for the first time. Once you save the strategy, the ID becomes non-editable.	Required
Description	Enter a description for the strategy. You can use the description to, for example, explain what sort of recommendation the strategy generates.	Optional
Page type	Select the type of page on which the recommendation is displayed. The page types available for your site depend on the site's vertical. If the recommendation is displayed on multiple types of pages, select Other. The page type determines the available algorithms.	Required
Fixed items	Define the items that are always included ("fixed") in the recommendation. You must at minimum define either one algorithm or one fixed item for the strategy. If a fixed item also appears in the results generated by an algorithm, the platform automatically removes the duplicate from the final set of items returned by the strategy. Adding a fixed item To add a fixed item: Click Add item. The Control Panel adds an undefined item. In the empty field, start typing the item name or ID, and select the item you want. The field automatically lists items tracked for the site. Enter the slot number for the item. The slot number determines the item's absolute position in the recommendation results. The position is not affected by algorithms, filters, or shuffling. For example, if you set the slot number to "1", the item is always displayed first in the recommendation. You cannot enter the same slot number for multiple items. Editing a fixed item You can change the selected item and slot number of a fixed item. Removing a fixed item To remove a fixed item, click ✕ for the item.	Optional
Algorithms	Select the algorithms for the strategy. The algorithms together determine the dynamically generated set of items returned by the strategy. You can further refine the set by applying filters and affinity. You must at minimum define either one algorithm or one fixed item for the strategy. You can select a maximum of five algorithms. A new strategy includes a single preselected algorithm, which you can change. How algorithms work The platform runs each algorithm separately against the same source usage data and combines the results from the algorithms in the order in which the algorithms are selected. For example, if you have Bought together with current item - 60 days with 5 items as your first algorithm and Viewed together with current item - 30 days with 3 items as your second algorithm, the strategy returns a total of eight items: the first five items are the top five items from the former algorithm and the remaining three items are the top three items from the latter algorithm. The platform automatically reruns the algorithms at regular time intervals, thereby periodically regenerating the recommendation data returned by the strategy. The platform reruns each algorithm separately based on its regeneration frequency. If you select multiple algorithms with different regeneration frequencies, some parts of the data returned by the strategy will be updated more frequently than other parts. To find out the frequency of an algorithm, see Supported algorithms. Adding an algorithm To add an algorithm: Click Add algorithm. The Control Panel adds an algorithm with default settings. Select the algorithm you want to use. For more information about the supported algorithms, see Supported algorithms. Enter the maximum number of items returned by the algorithm. The algorithm will always return this many items, unless it cannot find enough items matching its criteria. Changing an algorithm You can change the selected algorithm and the maximum number of items returned by the algorithm. Removing an algorithm To remove an algorithm, click ✕ for the algorithm.	Optional
Filters	Create filters to further refine the set of items returned by the strategy. The platform also provides predefined filters for certain page types. You can select to apply some of the predefined filters, while the platform automatically applies others. The platform applies the filters separately to the full results of each algorithm, removing items based on the filter settings. The platform then picks the top items for each algorithm, and combines the top items and any fixed items into the final set of recommended items returned by the strategy. The platform does not apply filters to the results of the Most viewed by the visitor, Recently bought by the visitor, and Recently viewed by the visitor algorithms. However, when the selected page type for the recommendation strategy is Product, the currently viewed item is excluded from the recommendation data by default. Adding a filter To add a filter: Click Add filter. The filter settings open. Define the filter settings. Click Save. Editing a filter To edit a filter: Click Edit for the filter. The filter settings open. Edit the filter settings. Click Save. Removing a filter To remove a filter, click ✕ for the filter. Excluding items already in the visitor's shopping cart If the Page type of the strategy is Cart, the Filters section displays the Exclude items already added to the cart checkbox. The checkbox is selected by default, and you cannot deselect it. The strategy automatically excludes items that are already in a visitor's shopping cart: If the visitor has a specific item in their cart, and if an algorithm recommends that item, the strategy automatically removes the item from the final set of recommended items for the visitor. Excluding the currently viewed item If the Page type of the strategy is Product, the Filters section displays the Exclude the currently viewed item checkbox. The checkbox is selected by default, and you cannot deselect it. The strategy automatically excludes the item that a visitor is currently viewing from the final set of recommended items for the visitor. Limiting the results to the viewed category If the Page type of the strategy is Category, and if you only want to return items that belong to the category currently viewed by the visitor, select either Only return items whose type matches the viewed category or Only return items whose categories include the viewed category. The option available to you depends on whether item data for your site uses the `type` (string) or `categories` (array of strings) attribute for storing category information. Limiting the results to the viewed item's categories If the Page type of the strategy is Product, and if you only want to return items that belong to the same category or categories as the item currently viewed by the visitor, select either Only return items whose type is the same as the currently viewed item's or Only return items whose categories include at least one category that is the same as the currently viewed item's. The option available to you depends on whether item data for your site uses the `type` (string) or `categories` (array of strings) attribute for storing category information. Limiting the results to searched categories If the Page type of the strategy is Search, and if you only want to return items that belong to the same category or categories as the items returned by the search, select either Only return items whose type matches a searched category or Only return items whose categories include a searched category. The option available to you depends on whether item data for your site uses the `type` (string) or `categories` (array of strings) attribute for storing category information.	Optional
Affinity	Set the level of visitor affinity applied to the recommendation. The higher the level, the more personalized the set of recommended items is for each individual visitor. The platform applies affinity separately to the full results of each algorithm, after first applying filters to the results. Applying affinity reorders (reranks) the items to a greater or lesser degree depending on the level of affinity selected and how closely a given visitor's affinities match the algorithm results. The possible slider values are: 0% (no affinity applied, an algorithm fully determines how the items it returns are ranked) 25% 50% (affinity and algorithm have equal weight in determining how the items returned by an algorithm are ranked) 75% 100% (affinity fully determines how the items returned by an algorithm are ranked) If a visitor's affinity is not known, the platform does not apply any affinity to the recommendation for that visitor. For more information about affinity and how it works, see Feature: Affinity.	Required

Defining the recommendation strategy settings

Figure: Defining the recommendation strategy settings (click to enlarge)

Supported algorithms

The following table describes the algorithms you can use in a recommendation strategy. The table also shows for which page types an algorithm is valid and how often the recommendation data returned by the algorithms is automatically regenerated.

Table: Supported algorithms

Algorithm	Description	Page type	Regeneration
Bought together with categories recently bought by the visitor	Returns items bought together (in the past 60 days) with the items the visitor has recently bought (in the past 7 days). The returned items are from the same category or categories as the items bought by the visitor. Example The visitor recently bought the following items: Item A from category X one day ago Item B from category Y five days ago Item C from category Z nine days ago The algorithm returns items from categories X and Y that visitors have commonly bought together with items A and B.	All	1 day
Bought together with current category	Returns items bought together (in the past 60 days) with items from the category the visitor is currently viewing.	Category	1 day
Bought together with current item	Returns items bought together (in the past 60 days) with the item the visitor is currently viewing.	Article Game Product	1 day
Bought together with items in the cart	Returns items bought together (in the past 60 days) with the items in the visitor's shopping cart. The algorithm considers a maximum of 20 shopping cart items.	Cart	1 day
Bought together with items recently viewed by the visitor	Returns items bought together (in the past 60 days) with the items the visitor has recently viewed (in the past 7 days).	All	1 day
Most bought on the site in the past 24 hours	Returns the most bought items on the site in the past 24 hours.	All	1 hour
Most bought on the site in recent days	Returns the most bought items on the site in the past 7 days.	All	1 day
Most bought on the site in recent months	Returns the most bought items on the site in the past 60 days.	All	1 day
Most viewed by the visitor	Returns items the visitor has viewed the most in the past 14 days.	All	Real-time
Most viewed on the site in the past 24 hours	Returns the most viewed items on the site in the past 24 hours.	All	1 hour
Most viewed on the site in recent days	Returns the most viewed items on the site in the past 7 days.	All	1 day
Most viewed on the site in recent weeks	Returns the most viewed items on the site in the past 30 days.	All	1 day
Recently bought by the visitor	Returns items the visitor has bought in the past 14 days.	All	Real-time
Recently viewed by the visitor	Returns items the visitor has viewed in the past 14 days.	All	Real-time
Viewed together with categories recently viewed by the visitor	Returns items viewed together (in the past 30 days) with the items the visitor has recently viewed (in the past 7 days). The returned items are from the same category or categories as the items viewed by the visitor. Example The visitor recently viewed the following items: Item A from category X one day ago Item B from category Y five days ago Item C from category Z nine days ago The algorithm returns items from categories X and Y that visitors have commonly viewed together with items A and B.	All	1 day
Viewed together with current category	Returns items viewed together (in the past 30 days) with items from the category the visitor is currently viewing.	Category	1 day
Viewed together with current item	Returns items viewed together (in the past 30 days) with the item the visitor is currently viewing.	Article Game Product	1 day
Viewed together with items recently viewed by the visitor	Returns items viewed together (in the past 30 days) with the items the visitor has recently viewed (in the past 7 days).	All	1 day
Viewed together with recently searched categories	Returns items viewed together (in the past 30 days) with items from the three categories that feature most in the visitor's current search results. Example The visitors current search returns 20 items: 2 items from category A 5 items from category B 8 items from category C 2 items from category D 3 items from category E The algorithm returns items that visitors have commonly viewed together with items from categories C, B, and E.	Search	1 day
Viewed together with recently searched items	Returns items viewed together (in the past 30 days) with the top three items in the visitor's current search results.	Search	1 day

Filter settings

The following table describes the settings you can define for a recommendation strategy filter in the Control Panel. A filter defines a single rule set for filtering recommended items.

Table: Filter settings

Setting

Description

Role

Name

Enter a name for the filter.

Required

Rules

Create one or more rules that together define the filtering logic for the filter.

A rule defines a single comparison operation between an item attribute value and a target value defined by you. The rule is used to include and exclude items from the final recommendation results: any item for which the rule evaluates to true is included, while any item for which the rule evaluates to false is excluded. The comparison is case-insensitive.

If you create multiple rules, the platform applies them all, that is, the platform treats the rules as combined with logical AND operators. The platform only returns items for whom all the rules evaluate to true.

The filter must include at least one rule. A new filter includes a single empty rule, which you can edit.

Example

If you wanted to exclude items that cost more than 100 in your site currency, you would filter for items whose price attribute value was less than or equal to 100, which would give you the rule:

price is less than or equal to 100

The platform would then evaluate every item in the algorithm results and remove any item for which the rule evaluates to false. The final recommendation results returned by the strategy would thus exclude these items. For example:

# Set of items returned by the algorithms

Item 1, price: 100
Item 2, price: 500
Item 3, price: 30

# Filter evaluation

Item 1, price: 100 -> TRUE
Item 2, price: 500 -> FALSE
Item 3, price: 30 -> TRUE

# Set of items returned by the strategy after applying the filter

Item 1, price: 100
Item 3, price: 30

For more examples, see Filter examples.

Adding a rule

To add a rule:

Click Add rule. The Control Panel adds an undefined rule.
Select the item attribute you want to use for filtering items. The field automatically lists the attributes tracked for the site.
Select the relational operator for comparing the item attribute value to the target value. The drop-down menu only displays operators that are valid for the data type of the selected attribute. For more information about the operators, see Filter rule operators.
Enter or select the target value for the comparison. The field automatically lists the different values tracked for the specified item attribute (unless the attribute is an array).
The target value type depends on the operator. For more information about the target values, see Filter rule operators.
If the target value is an array, use the Add button to individually enter the different values in the array. You can remove a value from the array by clicking ✕ for the value.

Editing a rule

You can change the attribute, operator, and value of a rule.

Removing a rule

To remove a rule, click ✕ for the rule.

Removing a rule

Required

Filter rule operators

The following table describes the relational operators supported in filter rules. The Attribute type and Target type columns list the types of item attribute values and target values, respectively, that the operators support. For example, the equals operator expects a Boolean, number, or string as the attribute value and a string as the target value.

The comparison is always case-insensitive.

Table: Supported filter rule operators

Operator	Description	Attribute type	Target type
equals	The rule evaluates to true if the attribute value equals the target value. Example Rule: <type> equals "Fashion/Shoes" type: "Fashion/Shoes" -> TRUE type: "Fashion/Suits" -> FALSE The platform converts the attribute value to a string for the comparison.	Boolean Number String	String
does not equal	The rule evaluates to true if the attribute value does not equal the target value. Example Rule: <type> does not equal "Fashion/Shoes" type: "Fashion/Shoes" -> FALSE type: "Fashion/Suits" -> TRUE The platform converts the attribute value to a string for the comparison.	Boolean Number String	String
is greater than	The rule evaluates to true if the attribute value is greater than the target value. Example Rule: <price> is greater than 50 price: 40 -> FALSE price: 50 -> FALSE price: 60 -> TRUE If the attribute is a number, the platform treats the attribute and the target value as numbers for the comparison.	Number String	String
is less than	The rule evaluates to true if the attribute value is less than the target value. Example Rule: <price> is less than 50 price: 40 -> TRUE price: 50 -> FALSE price: 60 -> FALSE If the attribute is a number, the platform treats the attribute and the target value as numbers for the comparison.	Number String	String
is greater than or equal to	The rule evaluates to true if the attribute value is greater than or equal to the target value. Example Rule: <price> is greater than or equal to 50 price: 40 -> FALSE price: 50 -> TRUE price: 60 -> TRUE If the attribute is a number, the platform treats the attribute and the target value as numbers for the comparison.	Number String	String
is less than or equal to	The rule evaluates to true if the attribute value is less than or equal to the target value. Example Rule: <price> is less than or equal to 50 price: 40 -> TRUE price: 50 -> TRUE price: 60 -> FALSE If the attribute is a number, the platform treats the attribute and the target value as numbers for the comparison.	Number String	String
contains	The rule evaluates to true if the attribute value contains or equals the target value. Example Rule: <type> contains "shoes" type: "Fashion/Shoes" -> TRUE type: "Fashion/Suits" -> FALSE	String	String
does not contain	The rule evaluates to true if the attribute value does not contain or equal the target value. Example Rule: <type> does not contain "shoes" type: "Fashion/Shoes" -> FALSE type: "Fashion/Suits" -> TRUE	String	String
begins with	The rule evaluates to true if the attribute value begins with or equals the target value. Example Rule: <type> begins with "Fashion" type: "Fashion/Shoes" -> TRUE type: "Food/Seafood" -> FALSE	String	String
begins with any one of	The rule evaluates to true if the attribute value begins with or equals any one of the target values. Example Rule: <type> begins with any one of ["Fashion", "Food", "Toys"] type: "Fashion/Shoes" -> TRUE type: "Food/Seafood" -> TRUE type: "Home/Bedroom" -> FALSE	String	Array of strings
ends with	The rule evaluates to true if the attribute value ends with or equals the target value. Example Rule: <type> ends with "Shoes" type: "Fashion/Shoes" -> TRUE type: "Food/Seafood" -> FALSE	String	String
is one of	The rule evaluates to true if the attribute value equals any one of the target values. Example Rule: <brand> is one of ["Cakita", "Kosch", "Wakita"] brand: "Cakita" -> TRUE brand: "Dawelt" -> FALSE brand: "Wakita" -> TRUE The platform converts the attribute value to a string for the comparison.	Number String	Array of strings
is not one of	The rule evaluates to true if the attribute value equals none of the target values. Example Rule: <brand> is not one of ["Cakita", "Kosch", "Wakita"] brand: "Cakita" -> FALSE brand: "Dawelt" -> TRUE brand: "Wakita" -> FALSE The platform converts the attribute value to a string for the comparison.	Number String	Array of strings
includes	The rule evaluates to true if any one of the attribute values equals the target value. Example Rule: <features> includes "respins" features: ["respins", "scatters", "wilds"] -> TRUE features: ["paylines", "scatters", "wilds"] -> FALSE The platform converts the attribute values to strings for the comparison. The platform expects the attribute values to be of the same type.	Array of Booleans Array of numbers Array of strings	String
does not include	The rule evaluates to true if none of the attribute values equal the target value. Example Rule: <features> does not include "respins" features: ["respins", "scatters", "wilds"] -> FALSE features: ["paylines", "scatters", "wilds"] -> TRUE The platform converts the attribute values to strings for the comparison. The platform expects the attribute values to be of the same type.	Array of Booleans Array of numbers Array of strings	String
includes any one of	The rule evaluates to true if at least one of the attribute values equals at least one of the target values. Example Rule: <features> includes any one of ["respins", "wilds"] features: ["respins", "scatters", "wilds"] -> TRUE features: ["free spins", "paylines", "scatters"] -> FALSE The platform converts the attribute values to strings for the comparison. The platform expects the attribute values to be of the same type.	Array of Booleans Array of numbers Array of strings	Array of Booleans Array of numbers Array of strings
does not include any one of	The rule evaluates to true if none of the attribute values equals none of the target values. Example Rule: <features> does not include any one of ["respins", "wilds"] features: ["respins", "scatters", "wilds"] -> FALSE features: ["free spins", "paylines", "scatters"] -> TRUE The platform converts the attribute values to strings for the comparison. The platform expects the attribute values to be of the same type.	Array of Booleans Array of numbers Array of strings	Array of Booleans Array of numbers Array of strings
any one of contains	The rule evaluates to true if any one of the attribute values contains or equals the target value. Example Rule: <tags> any one of contains "sale" tags: ["shirts", "short-sleeve", "top-rated"] -> FALSE tags: ["shirts", "long-sleeve", "summer sale"] -> TRUE tags: ["skirts", "sale 50%", "top-reviewed"] -> TRUE The platform converts the attribute values to strings for the comparison. The platform expects the attribute values to be of the same type.	Array of Booleans Array of numbers Array of strings	String
any one of begins with	The rule evaluates to true if any one of the attribute values begins with or equals the target value. Example Rule: <tags> any one of begins with "top" tags: ["shirts", "short-sleeve", "top-rated"] -> TRUE tags: ["shirts", "long-sleeve", "summer sale"] -> FALSE tags: ["skirts", "sale 50%", "top-reviewed"] -> TRUE The platform converts the attribute values to strings for the comparison. The platform expects the attribute values to be of the same type.	Array of Booleans Array of numbers Array of strings	String
any one of ends with	The rule evaluates to true if any one of the attribute values ends with or equals the target value. Example Rule: <tags> any one of ends with "sleeve" tags: ["shirts", "short-sleeve", "top-rated"] -> TRUE tags: ["shirts", "long-sleeve", "summer sale"] -> TRUE tags: ["skirts", "sale 50%", "top-reviewed"] -> FALSE The platform converts the attribute values to strings for the comparison. The platform expects the attribute values to be of the same type.	Array of Booleans Array of numbers Array of strings	String
during	The rule evaluates to true if the attribute value is inside the specified duration counting backwards from the current date and time of your Frosmo Platform instance. The attribute must be one of the following datetime attributes: `created_at` `feed_updated_at` `updated_at` Any string attribute that represents an ISO 8601 datetime value The target value must be a duration string: a sequence of numbers followed by a unit suffix. The supported units are `h` (hours) and `d` (days). For example: `24h` or `7d`. Example Rule: <created_at> during "10d" Current time: 2022-09-10 12:00:00 UTC+2 created_at: "2022-09-01T15:00:00+02:00" -> TRUE created_at: "2022-08-28T15:00:00+02:00" -> FALSE The platform subtracts the attribute value from the current date and time, and compares the result to the target value (duration). If the result is less than or equal to the target value, the operation evaluates to true. If the attribute value is a future datetime, the operation always evaluates to true. You therefore cannot filter out items whose datetime is in the future. Example: The current date and time is `2022-09-10 12:00:00`, the attribute value is `2022-09-01 15:00:00`, and the target value is `10d`. Subtracting the attribute value from the current date and time yields `8d 21h`. The result is less than the target value, the operation evaluates to true, and the item is therefore included in the recommendation results.	String	String
not during	The rule evaluates to true if the attribute value is not inside the specified duration counting backwards from the current date and time of your Frosmo Platform instance. The attribute must be one of the following datetime attributes: `created_at` `feed_updated_at` `updated_at` Any string attribute that represents an ISO 8601 datetime value The target value must be a duration string: a sequence of numbers followed by a unit suffix. The supported units are `h` (hours) and `d` (days). For example: `24h` or `7d`. Example Rule: <created_at> not during "10d" Current time: 2022-09-10 12:00:00 UTC+2 created_at: "2022-09-01T15:00:00+02:00" -> FALSE created_at: "2022-08-28T15:00:00+02:00" -> TRUE The platform subtracts the attribute value from the current date and time, and compares the result to the target value (duration). If the result is greater than the target value, the operation evaluates to true. Example: The current date and time is `2022-09-10 12:00:00`, the attribute value is `2022-08-28 15:00:00`, and the target value is `10d`. Subtracting the attribute value from the current date and time yields `12d 21h`. The result is greater than the target value, the operation evaluates to true, and the item is therefore included in the recommendation results.	String	String
exists	The rule evaluates to true if the attribute exists. The attribute exists if the platform has tracked at least one value for the attribute. Do not define a target value.	Array of Booleans Array of numbers Array of strings Boolean Number String	–
does not exist	The rule evaluates to true if the attribute does not exist. The attribute does not exist if the platform has not tracked any values for the attribute. Do not define a target value.	Array of Booleans Array of numbers Array of strings Boolean Number String	–
matches regular expression	The rule evaluates to true if the attribute value matches the defined regular expression. Example Rule: <name> matches regular expression "^[Aa]\w+s$" name: "Aliens" -> TRUE name: "ALIENS" -> FALSE Define the regular expression using the RE2 syntax.	String	String
does not match regular expression	The rule evaluates to true if the attribute value does not match the defined regular expression. Example Rule: <name> does not match regular expression "^[Aa]\w+s$" name: "Aliens" -> FALSE name: "ALIENS" -> TRUE Define the regular expression using the RE2 syntax.	String	String

Filter examples

Here are some examples showing how to create filters with different operators and how those filters get evaluated:

Filter examples: equals, greater than, less than

Return all items from the category "Books"

Return all items from the category 'Books'

Filter evaluation examples

type: "Books" -> TRUE
type: "BOOKS" -> TRUE
type: "books" -> TRUE
type: "Book" -> FALSE
type: "Magazines" -> FALSE

Return all items from the category "Books", except ones from a specific company

Return all items from the category 'Books', except ones from a specific company

Filter evaluation examples

type: "Books", company: "Random House" -> TRUE
type: "Books", company: "Vanity Press" -> FALSE
type: "Magazines", company: "Random House" -> FALSE

Return books that cost less than 30 currency

Filter evaluation examples

type: "Books", price: 29.99 -> TRUE
type: "Books", price: 39.99 -> FALSE
type: "Magazines", price: 19.99 -> FALSE

Filter examples: contains, begins with, ends with

Return items whose name contains "cheetah"

Return items whose name contains 'cheetah'

Filter evaluation examples

name: "Cheetah Plushy" -> TRUE
name: "Living with cheetahs, as told by a cheetah lover" -> TRUE
name: "Operation C.H.E.E.T.A.H." -> FALSE

Return items whose name does not contain "cheetah"

Return items whose name does not contain 'cheetah'

Filter evaluation examples

name: "Cheetah Plushy" -> FALSE
name: "Living with cheetahs, as told by a cheetah lover" -> FALSE
name: "Operation C.H.E.E.T.A.H." -> TRUE

Return movies whose name starts with "A"

Return movies whose name starts with 'A'

Filter evaluation examples

type: "Movies", name: "Aliens" -> TRUE
type: "Movies", name: "aliens" -> TRUE
type: "Movies", name: "Tenet" -> FALSE
type: "Movie", name: "Argo" -> FALSE

Return movies whose name starts with "A", "B", or "C"

Return movies whose name starts with 'A', 'B', or 'C'

Filter evaluation examples

type: "Movies", name: "Aliens" -> TRUE
type: "Movies", name: "aliens" -> TRUE
type: "Movies", name: "Tenet" -> FALSE
type: "Movies", name: "Babe" -> TRUE
type: "Movie", name: "A Clockwork Orange" -> FALSE

Return books whose title ends with "for dummies" and that cost less than 30 currency

Return books whose title ends with 'for dummies' and that cost less than 30 currency

Filter evaluation examples

type: "Books", name: "JavaScript For Dummies", price: 29.99 -> TRUE
type: "Books", name: "Windows 10 For Dummies", price: 39.99 -> FALSE
type: "Books", name: "The Complete Idiot's Guide to JavaScript", price: 19.99 -> FALSE

Filter examples: is one of

Return hotels located in Cairo, Kochi, or La Paz

Filter evaluation examples

type: "Hotel", city: "Cairo" -> TRUE
type: "Hotels", city: "Kochi" -> TRUE
type: "Hotels", city: "LaPaz" -> FALSE

Return beach volleyball events in Finland, except those in Tampere and Turku

Filter evaluation examples

mainCategory: "Beach Volleyball", country: "Finland", city: "Helsinki" -> TRUE
mainCategory: "Beach Volleyball", country: "Finland", city: "Tampere" -> FALSE
mainCategory: "BVB", country: "Finland", city: "Turuku" -> TRUE

Filter examples: includes, any one of contains/begins with/ends with

Return any item one whose categories is "slots"

Return any item one whose categories is 'slots'

Filter evaluation examples

categories: ["jackpot", "slots"] -> TRUE
categories: ["jackpot", "slot"] -> FALSE
categories: ["poker", "stud"] -> FALSE

Return any item one whose categories contains "jack"

Return any item one whose categories contains 'jack'

Filter evaluation examples

categories: ["jackpot", "slots"] -> TRUE
categories: ["JACKPOT", "slot"] -> TRUE
categories: ["blackjack", "cards"] -> TRUE

Return any item one whose categories starts with "slot"

Return any item one whose categories starts with 'slot'

Filter evaluation examples

categories: ["jackpot", "slots"] -> TRUE
categories: ["jackpot", "slot"] -> TRUE
categories: ["poker", "stud"] -> FALSE

Filter examples: during

Return items that have been created in the past 24 hours

Filter evaluation examples

If the current time is: 2022-01-20 18:00:00 UTC+2

created_at: "2022-01-19T09:53:31+02:00" -> FALSE
created_at: "2022-01-20T13:23:03+02:00" -> TRUE

Return items that have not been updated in the past 30 days

Return items that have not been updated in the past week

Filter evaluation examples

If the current time is: 2022-01-20 18:00:00 UTC+2

updated_at: "2021-11-11T00:03:54+02:00" -> TRUE
updated_at: "2022-01-20T14:52:16+02:00" -> FALSE

Filter examples: exists

Return items without a name (either the name attribute is missing or the attribute has an empty value)

Return items without a name

Filter evaluation examples

("name" attribute not found) -> TRUE
name: undefined -> TRUE
name: null -> TRUE
name: "" -> TRUE
name: "Aliens" -> FALSE

Filter examples: regular expressions

The platform supports the RE2 syntax for regular expressions.

Return movies whose name starts with "A" or "a" and ends in "s"

Return movies whose name starts with 'A' or 'a' and ends in 's'

Filter evaluation examples

type: "Movies", name: "Aliens" -> TRUE
type: "Movies", name: "aliens" -> TRUE
type: "Movies", name: "ALIENS" -> FALSE
type: "Movies", name: "Alien" -> FALSE

Content

Space Tools

Creating and editing a recommendation strategy

Creating a recommendation strategy

Editing a recommendation strategy

Previewing recommendation results

Recommendation strategy settings

Adding a fixed item

Editing a fixed item

Removing a fixed item

How algorithms work

Adding an algorithm

Changing an algorithm

Removing an algorithm

Adding a filter

Editing a filter

Removing a filter

Excluding items already in the visitor's shopping cart

Excluding the currently viewed item

Limiting the results to the viewed category

Limiting the results to the viewed item's categories

Limiting the results to searched categories

Supported algorithms

Example

Example

Example

Filter settings

Example

Adding a rule

Editing a rule

Removing a rule

Filter rule operators

Filter examples

Filter examples: equals, greater than, less than

Return all items from the category "Books"

Return all items from the category "Books", except ones from a specific company

Return books that cost less than 30 currency

Filter examples: contains, begins with, ends with

Return items whose name contains "cheetah"

Return items whose name does not contain "cheetah"

Return movies whose name starts with "A"

Return movies whose name starts with "A", "B", or "C"

Return books whose title ends with "for dummies" and that cost less than 30 currency

Filter examples: is one of

Return hotels located in Cairo, Kochi, or La Paz

Return beach volleyball events in Finland, except those in Tampere and Turku

Filter examples: includes, any one of contains/begins with/ends with

Return any item one whose categories is "slots"

Return any item one whose categories contains "jack"

Return any item one whose categories starts with "slot"

Filter examples: during

Return items that have been created in the past 24 hours

Return items that have not been updated in the past 30 days

Filter examples: exists

Return items without a name (either the name attribute is missing or the attribute has an empty value)

Filter examples: regular expressions

Return movies whose name starts with "A" or "a" and ends in "s"