This new technique to compress the time series data collected by my home automation system seems to be working really well.
Digital Twin are an online representation of a real world object, a copy of its properties in the digital world and a way to send updated and commands to it. In effect I've been making them for years but now they have a trendy name.
Why automated learning is hard for a smart home. The perils of over-fitting, under-fitting and how the general unpredictable nature of life makes it hard to build a system that learns your behavior.
One way to reduce the volume of sensor data is to remove redundant points. In a system with timestamped data recorded on an irregular interval we can achieve this by removing co-linear points.
Home automation systems need to respond to events in the real world. Sometimes it's an analog value, sometimes it's binary, rarely is it clean and not susceptible to problems. Let's discuss some of the ways to convert these inputs into actions.
Another super useful function for handling sensor data and converting to probabilities is the logistic function 1/(1+e^-x). Using this you can easily map values onto a 0.0-1.0 probability range.
In a home automation system we often want to convert a measurement into a probability. The ATAN curve is one of my favorite curves for this as it's easy to map overything onto a 0.0-1.0 range.
Several years ago we did a major remodel. I did all of the finish electrical myself and supervised all of the rough-in electrical. I also put in all of the electrical system and water in our barn. I have opinions ...
I'm testing a T-Mobile Home Internet device as a backup to XFinity and a way to offload half our monthly traffic to avoid the XFinity 1.2TB cap
My notes on the iBeacon meetup in Seattle held in January 2015
A rant about RAID
Running conduit can be expensive but maybe you don't need one to every room
Some of the more witty comments on Twitter about the Balloon Boy hoax
Expanding URLs would help users decide whether or not to click a link
Isn't it time we stopped knowing which drive our file is on?
Uninstalling Windows Media Player - the end of an era
A novel UI for menus that combines a breadcrumb and a menu in one visual metaphor
Some benchmark performance for Amazon vs a dedicated server
You cannot tack too often when sailing or you get nowhere. Agile is a bit like that.
When your anti-virus software starts stealing your personal data, it's time to remove it!
Why disk speed is the most critical aspect for most modern PCs and servers
A friend died last year, it wasn't unexpected. He left a lot for his friends to cleanup. Maybe these notes can help someone else prepare better.