The Salience Engine is a set of tools that I created in order to simplify routing players to the correct conversation based on external factors. It is designed to work as an add-on on top of Yarn Spinner.
The general design (and name) was influenced by a blog post by Emily Short detailing alternatives to branching narratives. In that post, Short describes salience-based narratives as
[...] interactive narratives that pick a bit of content out of a large pool depending on which content element is judged to be most applicable at the moment.The Salience Engine was designed to achieve that same goal - picking the most relevant content from a large pool - but, it differs in one particularly noteworthy way: it is embedded into an otherwise branching narrative structure, so rather than picking out little bits of content, it instead picks out large branches.
Development of the Salience Engine is currently ongoing. The primary intent is to use it in my current project, as the text content of the project is too large and interconnected to effectively manage using branches alone.
If you're interested in more details about the Salience Engine, I've written about it in the following blog posts: