Ditto publishes an engineering write-up on its background memory graph pipeline
Nobody fully understands why we dream. One theory is memory consolidation - your brain replaying the day and weaving it into what you already know. We built the algorithmic version of that for Ditto. The bugs we shipped along the way? Those were the nightmares.
Why it matters: Explains how Ditto turns conversations into searchable personal knowledge. Link:
Discussion
memory graph from convos is the right shape. been waiting for someone to actually ship this
i went into the write up assuming it was the usual store everything and embed it dressed up as a graph. but the part where they describe pruning stale nodes and merging duplicate facts in the background is actually the hard problem and they took it seriously. changing my mind on ditto a bit, this is more thought through than i gave them credit for.
good writeup. a graph over a flat vector store makes sense for cross-session recall. curious about the eviction policy
graph-based recall writeups are my favorite genre. a memory that never forgets is just a slow context window, so the eviction policy is the whole design