Whilst checking some log files today I came across some errors where a
non-logged in user was accessing pages that only a logged in user would
ever see. Googlebot, MSNbot and others never try to index these pages
because they can't reach them so how was this bot getting there and why
wasn't it reporting itself as a bot?
Here's the details on what I was seeing:
> UserAgent = Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1) >
Referrer = > User Host = 150.70.84.28
A quick search revealed that this address belongs to Trend Micro in
Japan. One of our customers had their anti-virus software running and
after each request they made we got another one from this IP address.
Apparently it takes each request you make, sends it off to Japan and
then they reissue the request from there pretending to be a normal user!
Presumably they are looking for viruses on your pages but what a dumb
approach!
For starters, if I were a virus author it would be utterly trivial to
spoof them with a 'happy' page, for another it's a pretty abusive
approach to 'security', and lastly do you really want all your browsing
history to be in the hands of Trend Micro in Japan?!?!?!
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 ...
