Technique for aggregating content from a common graph edge

A system comprising:

• at least one processor;
• a computer-readable storage medium storing instructions thereon, which, when executed by the at least one processor, cause the system to:
• receive a request associated with a first end-user of an online service for presentation of a personalized, vertically scrolling content feed;
• retrieve from a database a plurality of content items eligible for presentation to the first end-user via the vertically scrolling content feed, each content item in the plurality of content items selected based on the content item having a relationship to the first end-user as memorialized by an edge connecting a first node, representing the first end-user, to a second node, associated with a respective content item in a connection graph maintained by the online service;
• assigning to each content item in the plurality of content items a ranking score;
• for a first content item, determining that there are some predetermined minimum number of other content items sharing in common with the first content item the same relationship to the first end-user such that a node representing the first content item and nodes representing each of the other content items are connected to the node representing the first end-user in the connection graph by the same edge;
• and
• generating a user interface to display the personalized, vertically scrolling content feed on a client-device of the first end-user, wherein content items are presented in the vertically scrolling content feed in a position relative to one another based on the ranking score assigned to each content item, and the first content item and some predetermined number of the other content items are presented as a group in a horizontally scrolling content carousel at a position in the vertically scrolling content feed that is based on the ranking score of the first content item.

A computer-implemented method comprising:

• responsive to receiving a request associated with a first end-user of a social networking service for presentation of a personalized content feed, retrieving from a database a plurality of content items eligible for presentation to the first end-user via the content feed, each content item in the plurality of content items selected based on the content item being associated with a node in a connection graph that is directly connected with a node representing the end-user;
• assigning to each content item in the plurality of content items a ranking score, resulting in a ranked list of content items;
• identifying a first content item within the ranked list of content items that satisfies a condition indicating that the first content item is eligible for presentation, via a content carousel, with a group of other content items satisfying the same condition;
• determining that there are some predetermined minimum number of other content items satisfying the same condition satisfied by the first content item, wherein the condition involves the first content item being associated with the end-user by a particular type of edge connecting nodes in a connection graph maintained by the social networking service;
• and
• generating a user interface to display the personalized content feed on a client-device of the end-user, wherein content items are presented in the content feed in a position relative to one another based on the ranking score assigned to each content item, and the first content item and some predetermined number of the other content items are presented as a group in a content carousel at a position in the content feed that is based on the ranking score of the first content item.