optimization

问题 I've been working with RequireJS for a bit lately but I am brand new to the optimizer and I am trying to add it into my build steps but I am running into an issue. After it runs and merges my JS files into one, the body of my "main" no longer executes (worked fine prior to optimizing). All of the dependency JS loads correctly but the actual code inside of my main define() does not (even though I can see it in the final output file. Here is what I mean: Assuming simplified version of my main

问题 I recently became very interested in prime numbers and tried making programs to calculate them. I was able to make a sieve of Sundaram program that was able to calculate a million prime numbers in a couple seconds. I believe that's pretty fast, but I wanted better. I went on to try to make a Sieve of Atkin, I slapped together working C++ code in 20 minutes after copying the pseudocode from Wikipedia. I knew that it wouldn't be perfect because after all, its pseudocode. I was expecting at

问题 I tried to elaborate on the Assignment with Task Sizes example by adding a multi-dimensional "size"(demand) and "total_size_max" . The solution seems to decide to allocate everything to 1 worker only despite the fact that others are available. The result when run allocates everything to worker(machine 18). Sample output : Machine 18 is assigned to produce Component 0 with minimum Cycle_Time = 10000000 Machine 18 is assigned to produce Component 1 with minimum Cycle_Time = 10000000 Machine 18

问题 I have a very large square matrix of order around 570,000 x 570,000 and I want to power it by 2. The data is in json format casting to associative array in array (dict inside dict in python) form Let's say I want to represent this matrix: [ [0, 0, 0], [1, 0, 5], [2, 0, 0] ] In json it's stored like: {"3": {"1": 2}, "2": {"1": 1, "3": 5}} Which for example "3": {"1": 2} means the number in 3rd row and 1st column is 2. I want the output to be the same as json, but powered by 2 (matrix

问题 Somewhat related to this question (and cross-posted here), I'm trying to index a symbolic matrix variable in CasADi. I want to take a vector variable x and populate a matrix A of symbolic function expressions based on the components of x . More specifically, I hope to do something like part (c) below: from casadi import * opti = Opti() n = 3 B = np.random.normal(size=[n, n]) D = np.random.normal(size=[n, n]) D = np.dot(D.T, D) ##(a) variables and expressions x = opti.variable(n); opti.set

问题 lets say you want to make a program that will print the numbers 1-9 over and over again 123456789123456789123456789 i guess the most obvious way to do it would be to use a loop int number = 1; while(true) { print(number); number = number + 1; if(number > 9) number = 1; } before i go any further, is this the best way to do this or is there a more common way of doing this? 回答1: The most obvious way would be this: for (;;) { for (int i = 1; i < 10; ++i) { print(i); } } Why you'd want to

问题 How anyone can write an Indefinite running Thread without a costly loop like while? Like I don't want something like this public void run() { while(true) { do Blah Blah Blah Thread.sleep(.....); } } Any optimized way to write such a long running thread. Thanks in advance. 回答1: In what way do you consider while(true) "costly"? Do you have any evidence that this is affecting your performance? What operation would you consider to be cheaper than it? Note that from your comment: I guess such a

问题 This discussion started over here but I thought it would be nice to have a definitive answer... So let's say you have MovieClip on the Stage (or a UIComponent for the Flex audience) - what do you have to do to not make it so that the user can't see the object but also so that the AVM2 doesn't even factor it in when rendering the stage for the user? I always thought the answer was to set visible = false but there is an argument out there that the object has to placed outside the boundaries of

问题 How do you re-size a black and white image without any smoothing affect? I have a BarCode that is an image that is too big. I need to resize the image but with one caveat. The resulting image needs to be the same proportional size and the black and white bars can not turn into black,grey and white bars(which I believe is due to some smoothing occuring). Any example of how to do this in c#?? 回答1: @arul is correct. To be specific, graphics.SmoothingMode = SmoothingMode.None; graphics.DrawImage(

问题 I have tried to reproduce the script of the following link: Parameters estimation on Lotka Volterra model with Scilab And I get similar errors in the results to those described in it.. You could guide me to run the script without errors. Gracias Hermes 回答1: Solution for Scilab 5.5.1 or smaller The problem is that the solver somehow reach a point where it cannot solve the ode on every t and stops at a certain point. Thus your y_calc is smaller than y_exp in size. If this is not a problem for