minimize

问题 I am learning to optimize a multivariate constrained nonlinear problem with scipy.optimize.minimize ,but received strange results. My problem: minimize objfun objfun x*y constraints 0<=x<=5, 0<=y<=5, x+y==5 My code: from scipy import optimize def func(x): return x[0]*x[1] bnds=((0,100),(0,5)) cons=({'type':'eq','fun':lambda x:x[0]+x[1]-5}) x0=[0,0] res= optimize.minimize(func,x0,method='SLSQP',bounds=bnds,constraints=cons) Received results: status: 0 success: True njev: 2 nfev: 8 fun: 6

问题 I have a dataset with 70 foods and information about each food's nutritional value (protein/oz., fat/oz., cals/oz., etc.), as well as the food's cost/oz. I am trying to figure out--given a set budget in $--what the best combination of foods (and the amt. of each food) would be to maximize protein, minimize fat, minimize calories, etc. I aim to do this across a series of price points, and to plot each. I found a whole bunch of different packages that could help with this here: http://cran.r

问题 Is there any windows apps/google chrome flags/google chrome extension/javascript methods or any other thing that would allow to bring a chrome window from background(minimized) to foreground when something happens inside a website. I do have access to the client computer, I could set chrome flags/kiosk mode or anything that would prevent it from opening to foreground if it's possible. For example I am trying to bring the window to foreground when an order comes in, through a notification (I'm

问题 Problem : Youtube Player crashes on minimizing youtube player activity/Fragment in the app. Cause : Youtube Player Update Code public class YouTubePlayerActivity extends YouTubeBaseActivity implements YouTubePlayer.OnInitializedListener { private static final int RECOVERY_DIALOG_REQUEST = 1; private final String TAG = YouTubePlayerActivity.class.getSimpleName(); private YouTubePlayerView youTubeView; private String videoId; private YouTubePlayer youtubePlayer; @Override protected void

问题 I have a program with an option to enable minimizing to the taskbar's notification area. In order for this to work, I need a reliable way of detecting when the user has minimized the application. How can I do that using the Windows API in a C++ application? 回答1: When the user minimizes the window (either using the box on the title bar, or by selecting the "Minimize" option from the system menu), your application will receive a WM_SYSCOMMAND message. The wParam parameter of that message will

问题 I'm in need of creating the minimal jar of utils library for use in Android. I'm using some methods from apache commons libraries (such as IOUtils , StringUtils ). However, each such usage makes me import the whole library ( commons-lang , commons-io etc.) which is absolutely acceptable under Tomcat ( war 's are mamoot-sized anyway), but absolutely unacceptable for Android project. So, my aim is, to pack all used classes from dependencies into one jar - but only that classes that are needed.

问题 In the following script: import numpy as np from scipy.optimize import minimise a=np.array(range(4)) b=np.array(range(4,8)) def sm(x,a,b): sm=np.zeros(1) a=a*np.exp(x) sm += sum(b-a) return sm x0=np.zeros(4) print sm(x0,a,b) #checking my function opt = minimize(sm,x0,args=(a,b),method='nelder-mead', options={'xtol': 1e-8, 'disp': True}) I am trying to optimise for x but I am having the following message: Warning: Maximum number of function evaluations has been exceeded. And the result is:

问题 I bound the "WindowState" property of my main window to my ViewModel in order to change the state of the window by a command, but the first time I minimize the window it minimizes like a worksheet does in an Excel file. Is there a work around for this or a correct way to bind the "WindowState" property to my ViewModel so that the window minimizes correctly? 回答1: I don't think you should care about the window state in a view model, it's completely wrong because a lower-level layer is aware of

问题 I'm using scipy.optimize.minimize to optimize a real-world problem for which the answers can only be integers. My current code looks like this: from scipy.optimize import minimize def f(x): return (481.79/(5+x[0]))+(412.04/(4+x[1]))+(365.54/(3+x[2]))+(375.88/(3+x[3]))+(379.75/(3+x[4]))+(632.92/(5+x[5]))+(127.89/(1+x[6]))+(835.71/(6+x[7]))+(200.21/(1+x[8])) def con(x): return sum(x)-7 cons = {'type':'eq', 'fun': con} print scipy.optimize.minimize(f, [1,1,1,1,1,1,1,0,0], constraints=cons,

问题 How do I detect when my Compact Framework application is being smart-minimized (smart minimize is what happens when the user clicks the "X" button in the top-right corner on a Pocket PC)? The Deactivate event isn't the right way because it occurs in circumstances other than minimization, such as when a message box or another form is shown on top of the main form. And the form's WindowState doesn't help because there is no "Minimized" WindowState on .NET CF. I heard that by setting MinimizeBox