volatility

java threads don't see shared boolean changes

由 三世轮回 提交于 2021-01-27 12:08:08
问题 Here the code class Aux implements Runnable { private Boolean isOn = false; private String statusMessage; private final Object lock; public Aux(String message, Object lock) { this.lock = lock; this.statusMessage = message; } @Override public void run() { for (;;) { synchronized (lock) { if (isOn && "left".equals(this.statusMessage)) { isOn = false; System.out.println(statusMessage); } else if (!isOn && "right".equals(this.statusMessage)) { isOn = true; System.out.println(statusMessage); } if

java threads don't see shared boolean changes

由 拥有回忆 提交于 2021-01-27 12:08:04
问题 Here the code class Aux implements Runnable { private Boolean isOn = false; private String statusMessage; private final Object lock; public Aux(String message, Object lock) { this.lock = lock; this.statusMessage = message; } @Override public void run() { for (;;) { synchronized (lock) { if (isOn && "left".equals(this.statusMessage)) { isOn = false; System.out.println(statusMessage); } else if (!isOn && "right".equals(this.statusMessage)) { isOn = true; System.out.println(statusMessage); } if

Simulation of GARCH in R

由 ◇◆丶佛笑我妖孽 提交于 2019-12-30 02:26:46
问题 I am doing a simulation of a GARCH model. The model itself is not too relevant, what I would like to ask you is about optimizing the simulation in R. More than anything if you see any room for vectorization, I have thought about it but I cannot see it. So far what I have is this: Let: # ht=cond.variance in t # zt= random number # et = error term # ret= return # Horizon= n periods ahead So this is the code: randhelp= function(horizon=horizon){ ret <- zt <- et <- rep(NA,horizon)#initialize ret

Forecasting of BEKK(1,1) model for 5 variables

由 筅森魡賤 提交于 2019-12-25 15:52:32
问题 I have estimated a BEKK(1,1) model and now I want to have forecast values of the model. Following are the R codes to estimate the BEKK(1,1) model. > install.packages('MTS') > install.packages('rmgarch') > simulated <- simulateBEKK(2, 1000, c(1, 1)) ##prepare the matrix: > simulated <- do.call(cbind, simulated$eps) ##Estimate with default arguments: > estimated <- BEKK(simulated) > diagnoseBEKK(estimated) 回答1: Since your question (is it a question?) doesn't really make clear what you are

java variable linked to batch file

由 不问归期 提交于 2019-12-25 05:09:58
问题 I am currently learning java and I encountered this problem. I am not sure if it can be done like this as I am still in the learning stage. So in my java main coding: import java.io.File; import java.io.IOException; public class TestRun1 { public static void main(String args[]) { //Detect usb drive letter drive d = new drive(); System.out.println(d.detectDrive()); //Check for .raw files in the drive (e.g. E:\) MainEntry m = new MainEntry(); m.walkin(new File(d.detectDrive())); try { Runtime

Cannot override a type with non-volatile upper bound

由 ﹥＞﹥吖頭↗ 提交于 2019-12-20 20:12:06
问题 I have a compiler error in scala and I don't know what does it refer to: Assume these declarations: trait Abstract { type MyType } trait AInner trait A extends Abstract{ type MyType <: AInner } trait BInner { def bMethod : Int } trait B extends Abstract with A{ override type MyType <: BInner with A#MyType } What I'm trying to achieve here(in trait B ) is to further restrict the type MyType declared in Abstract , so any value of type MyType must extend all the MyType s in the mixin tree. The

R - Modelling Multivariate GARCH (rugarch and ccgarch)

由 久未见 提交于 2019-12-03 16:04:23
First time asking a question here, I'll do my best to be explicit - but let me know if I should provide more info! Second, that's a long question...hopefully simple to solve for someone ;)! So using "R", I'm modelling multivariate GARCH models based on some paper (Manera et al. 2012). I model the Constant Conditional Correlation (CCC) and Dynamic Conditional Correlation (DCC) models with external regressors in the mean equations; using "R" version 3.0.1 with package "rugarch" version 1.2-2 for the univariate GARCH with external regressors, and "ccgarch" package (version 0.2.0-2) for the CCC

Cannot override a type with non-volatile upper bound

由 人盡茶涼 提交于 2019-12-03 07:25:23
I have a compiler error in scala and I don't know what does it refer to: Assume these declarations: trait Abstract { type MyType } trait AInner trait A extends Abstract{ type MyType <: AInner } trait BInner { def bMethod : Int } trait B extends Abstract with A{ override type MyType <: BInner with A#MyType } What I'm trying to achieve here(in trait B ) is to further restrict the type MyType declared in Abstract , so any value of type MyType must extend all the MyType s in the mixin tree. The compiler is giving me this message(as in title): type MyType is a volatile type; cannot override a type

alternatives to batch file since i am unable to include java code in it

由 和自甴很熟 提交于 2019-12-01 14:25:29
I heard that java code cannot be to add into batch file in a comment on my previous question: But is there any alternatives to it? Is it possible to add java code into batch file? I tried the following in the batch file but it does not work: vol231.exe -f m.walkin(new File(d.detectDrive())) imageinfo > Volatility.txt This is cmdenv.bat that i created to run in command prompt from java: E: echo off cls ... //This part is a long part for reducing footprint whereby the command prompt is switched to Helix vol231.exe -f E:\KOHMOHOJOJO-PC-20140714-152414.raw imageinfo > Volatility.txt vol231.exe -f

alternatives to batch file since i am unable to include java code in it

由 寵の児 提交于 2019-12-01 12:51:26
问题 I heard that java code cannot be to add into batch file in a comment on my previous question: But is there any alternatives to it? Is it possible to add java code into batch file? I tried the following in the batch file but it does not work: vol231.exe -f m.walkin(new File(d.detectDrive())) imageinfo > Volatility.txt This is cmdenv.bat that i created to run in command prompt from java: E: echo off cls ... //This part is a long part for reducing footprint whereby the command prompt is switched
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