# Building a graph-powered suggestion engine for redditlater with Loom

DevFeed: [Building a graph-powered suggestion engine for redditlater with Loom](<https://devfeed.tech/articles/building-a-graph-powered-suggestion-engine-for-redditlater-with-loom-32098.md>)

Original publisher: [Read original article](<https://adambard.com/blog/building-a-suggestion-engine-for-redditlater/>)

Published: 2015-06-07T00:00:00Z

Content type: tutorial

Language: en

Sources: [Adam Bard](<https://devfeed.tech/sources/adam-bard.md>)

Topics: [Graphs](<https://devfeed.tech/topics/graphs.md>), [data](<https://devfeed.tech/topics/data.md>), [MongoDB](<https://devfeed.tech/topics/mongodb.md>), [Clojure](<https://devfeed.tech/topics/clojure.md>), [JavaScript](<https://devfeed.tech/topics/javascript.md>), [Library](<https://devfeed.tech/topics/library.md>)

Tags: [clojure](<https://devfeed.tech/tags/clojure.md>), [data](<https://devfeed.tech/tags/data.md>), [database](<https://devfeed.tech/tags/database.md>), [graph](<https://devfeed.tech/tags/graph.md>), [javascript](<https://devfeed.tech/tags/javascript.md>), [library](<https://devfeed.tech/tags/library.md>), [mongodb](<https://devfeed.tech/tags/mongodb.md>), [reddit](<https://devfeed.tech/tags/reddit.md>)

## AI overview

The article explains how redditlater builds a graph-powered subreddit suggestion engine. It uses session search histories to connect subreddits, weights connections by co-occurrence, and uses Loom and MongoDB aggregation to generate related-subreddit suggestions.

## Source excerpt

Besides the post scheduling, the main reason people come to http://www.redditlater.com/ is the subreddit analysis feature. This lets folks enter in a subreddit and tells them when the best time to post on a given subreddit is. Little do they know, it tells me about them, too.