Viewing posts for the category Omarine User's Manual

Can Fuzzy learn or just deduce?

When it comes to Machine Learning, people often think of Neural Network. Indeed, the power of the Neural Network is very strong. However, the application of Neural Network is limited to some fields that require a large number of samples.

Fuzzy can be applied to any problem that an expert offers a set of rules. Fuzzy not only deduced but also learned. It forms new rules that are not included in the rules set by the programmer. To illustrate this, let's look at the entire set of rules in the Sail solution:

Is it possible to do defuzzication a discrete fuzzy set?

Is it possible to directly do defuzzication a discrete fuzzy set with the requirement that the defuzzification result must be one of the discrete values ​​in the fuzzy set?

The answer is NO.

For a continuous fuzzy set, we know the defuzzification formula according to the centroid method as follows:

Binary Qt Creator package version 4.9.82

Qt Creator is a leading integrated development environment (IDE) on the desktop. However, the binary package that Qt company provides to the community is not entirely compatible with the systems. For example, Qt is currently providing binary Qt Creator version 4.9.0. This version is built with Qt version 5.12.2. Therefore, for systems using newer Qt (Qt 5.12.3 - the latest version), a conflict will occur. To fix this, you need to put the system Qt in a separate directory like /opt and make a symlink to it. You can choose the solutions below:

1) Install multiple versions of Qt including Qt 5.12.2 and switch the symlink to it.

Using audit to find out unauthorized access

Using systemd timer

Systemd timer can be used to replace Cron for job scheduler. A timer file must be accompanied by a service file with the same name by default (except for the suffix). The service is triggered when the timer elapses. Because Omarine 6.0 does not use dcron, I write this article to guide you to create your own timer if needed.
We begin with a timer updating virus database that has been set up in Omarine 6.0. That is the pair of timer file clamav-freshclam.timer and service file clamav-freshclam.service.