ohc | Java large off heap cache | Caching library

For variables with two categories, do they need to be One Hot Encoded? In my dataset I have a binary variable as either 1 or 0. Do I need to transform that variable in a pipeline for my model or do I leave it as is?

I'm struggling with the following. I want to change my basic html table to a mat-table. But I can not find a way to merge the two rows on the first two columns.

I've got the mat-table on top and the basic html table on the bottom:

[![enter image description here][1]][1]

What I want in my mat table is the following: for each reference + invoice I want two rows, one with invoiced and one with expected, just like in my bottom table.

My basic html table is as following:

EDIT: Although yukim's workaround does work, I found that by downgrading to JDK 8u251 vs 8u261, the sigar lib works correctly.

• Windows 10 x64 Pro
• Cassandra 3.11.7

NOTE: I have JDK 11.0.7 as my main JDK, so I override JAVA_HOME and PATH in the batch file for Cassandra.

Opened admin prompt and...

java -version

I am currently implementing derivatives of regular data structures, in Agda, as presented in the One-Hole Context paper by Conor McBride [5].

In implementing it straight out of the OHC paper, which has also been done by Löh & Magalhães [3,4], we are left with the ⟦_⟧ function highlighted in red, as Agda can't tell if the μ and I cases will terminate together. Löh & Magalhães made a comment of this in their repository.

Other papers have also included a similar implementation or definitions in their papers [7,8] but do not have a repo (at least I haven't been able to find it) [1,2,6], or they follow a different approach [9] in which μ is defined separately from Reg, ⟦_⟧, and derive (or dissection in their case), with no environment, and the operations are performed on a stack.

Using the {-# TERMINATING #-} or {-# NON_TERMINATING #-} flags is undesirable. Particularly, anything using ⟦_⟧ will not normalize, and thus I can't use this function to prove anything.

The implementation below is a slight modification to the OHC implementation. It removes weakening and substitution as part of the structural definition of Reg. Which, at first, makes ⟦_⟧ happy! But I find a similar problem when implementing derive -- Agda's termination checker is not happy with the μ case.

I haven't been successful at convincing Agda that derive terminates. I was wondering if anyone had successfully implemented derive with the signature derive : {n : ℕ} → (i : Fin n) → Reg n → Reg n

The code below only shows some of the important pieces. I have included a gist with the rest of the definitions, which includes definitions of substitution and weakening and the derive that fails to terminate.

I am a newbie at programming and molecular dynamic simulations. I am using LAMMPS to simulate a physical vapor deposition (PVD) process and to determine the interactions between atoms in different timesteps.

After I perform a molecular dynamics simulation, LAMMPS provides me an output bonds file that contains records of every individual atom( as atom ID), their types (numbers reciprocating to particular elements), and information of other atoms that are bonded with those particular atoms. A typical bonds file looks like this.

I aim to sort atoms according to their types (like Group1: Oxygen-Hydrogen-Hydrogen) in three groups by considering their bonding information from bond output file and count the number of groups for each timestep. I used pandas and created a dataframe for each timestep.

I'm using an open source off-heap cache implementation, ohc.

Recently, I found a pull request on github which suggests to

replace spin-on-compare-and-set with spin-on-read.

Here is the change of code, it adds only one line while(lockFieldUpdater.get(this) != 0L), which like

I have some very simple code that's attempting to multi-thread an existing script.

On inspecting the treads window in visual Studio and calling Thread.CurrentThread.ManagedThreadId it always reports back as the same thread as starting the process. When ending it reports back a different thread id.

The threads do seem to be performing the task asynchronously, but the logging and output from visual studio are making me think otherwise.

Please could someone clarify what is going on and if I've made a mistake in my approach?

I'm attempting to send print instructions to two printers over a socket connection. The script works fine then hangs and reports back:

System.IO.IOException: Unable to write data to the transport connection: A request to send or receive data was disallowed because the socket had already been shut down in that direction with a previous shutdown call

or

System.Net.Sockets.SocketException (0x80004005): A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond

The issue is intermittent and I haven't been able to reproduce with a debugger attached.

Can anyone spot what could be causing this behavior? I've had issue with thread safety which I believe could be to blame.

Apologies for the amount of code. Due to the possibility of this being down to threading I've included as much scope as I can.

I have what I believe to be a thread safety issue.

I have two printers, one is loaded with a small label and the other a large. I want to send 1 print job over a socket to each printer.

I have attempted to thread/background the first request (large label) as it can take a long time to complete.

99% of the time the script works as expected. The small and big labels come out of their respective printers.

However, every now and then both the big and small labels are sent to the same printer! Either both to the small or large.

I think it's related to thread safety but I am finding it very hard to track down and understand whats happening. I've tried to add a lock and to close the sockets after use, but whatever I try the issue persists.

I've attempted to reduce my code to the bare minimum but am aware this post is still very code heavy. Any advice would be greatly appreciated.