Install Ubuntu 19.10 with encrypted swap/home partitions, specifying manually the swap partition

I would like to install ubuntu 19.10 with encrypted home and swap partitions, specifying manually the size of the swap partition. I struggled with gparted and the installer to have something working, without success… For instance: the EFI and a /boot (ext4) partitions + a single encrypted container containing 3 partitions (system/swap/home): the installer crashes…

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Annoying accent popup after upgrade from Debian 9 to 10

My Debian 9 was configured to have no dead keys in /etc/default/keyboard: # KEYBOARD CONFIGURATION FILE # Consult the keyboard(5) manual page. XKBMODEL=”pc105″ XKBLAYOUT=”de” XKBVARIANT=”nodeadkeys” XKBOPTIONS=”ctrl:nocaps” BACKSPACE=”guess” After the update to Debian 10 this stops working. When ever I type “^” in xterm I get an annoying popup: And when I type a “`” in…

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Grails web application loses connection to postgres database, what could be causing this?

I am running Postgres on a Ubuntu instance with Tomcat as my application server. Suddenly my deployed applications are no longer connecting to their respective database. Looking at the logs catalina.out I get : FATAL: password authentication failed for user “postgres” Logging into my system and updating the password back to its original password fixes…

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Train a competitive layer on nonnormalized vectors using LVQ technique

How can we train a competitive layer on non-normalized vectors using LVQ technique ? an example is given below from Neural Network Design (2nd Edition) book The net input expression for LVQ networks calculates the distance between the input and each weight vector directly, instead of using the inner product. The result is that the…

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