Building HTM Systems (WIP Document)


I recently asked who was building HTM systems and got quite a few people respond. That’s great, because I’m starting a big educational project, called Building HTM Systems. It is an interactive document with visualizations and sample code. It will explain SP and TM in enough detail that readers can implement it themselves, complete with running sample code and live visualizations in the browser (the sample HTM will be in JavaScript). I’m currently working on it at

This is a big project and I just started on it. I’d like to share updates and new content when I make progress, which is why I’m posting now.

I’m trying to explain why choosing receptive fields when setting up spatial pooling is important. You can see a couple of new visuals at Please try them out and give feedback if you have any. This format is new to me and I’m trying to take advantage of it entirely.



Dude! This is looking really good! Keep it up!

I can’t wait see how this shapes up!


Takes shape at great pace :slight_smile: keep up the great work


A post was split to a new topic: How to implement Cortical Columns


It is excellent, especially because it presents the functioning of HTM in a dynamic and interactive way. I am new to the theory and as for the Spatial Pooler I was very clear about its operation as detailed on the website. I look forward to the following parties with enthusiasm


FYI: the URL changed to This, also, is probably temporary. I had to transfer the wordpress site and this made it easier, long story.


Thanks Matt, I really enjoy yours videos and I think I understood some ideas that are really cool like encoders, SP and SDR.


The next phase in the SP docs is running computation. Before I can do that, I need to have at least one encoder, so now I’m working on number encoder docs. I have one visualization sort-of done (will be tweaked).


Super cool project, looks great! I’m a fan of D3/Observable with the interactive style, it will make it easy to learn when you can modify the code and see changes.