python - Passing args in scipy optimize.minimize objective function ( getting error on number of arguments) -


i'm trying use scipy's optimizer.minimize function i'm unable figure out exact way pass args objective function. have following code according me should work fine giving me error on number of arguments.

result = minimize(compute_cost, x0, args=(parameter), method='cobyla',constraints=cons, options={'maxiter':10000,'rhobeg':20})

here function signature objective function: def compute_cost(x,parameter)

parameter dict has 51 key value pair.

this gives following error:

capi_return null call-back cb_calcfc_in__cobyla__user__routines failed. traceback (most recent call last): file "c:\..\resource_optimizer.py", line 138, in <module> result = minimize(compute_cost, x0, args=(parameter), method='cobyla',constraints=cons, options={'maxiter':10000,'rhobeg':20}) file "c:\python27\lib\site-packages\scipy\optimize\_minimize.py", line 432, in minimize return _minimize_cobyla(fun, x0, args, constraints, **options) file "c:\python27\lib\site-packages\scipy\optimize\cobyla.py", line 246, in _minimize_cobyla dinfo=info) file "c:\python27\lib\site-packages\scipy\optimize\cobyla.py", line 238, in calcfc f = fun(x, *args) typeerror: compute_cost() takes 2 arguments (52 given)

can me figure out.

change args=(parameter) args=(parameter,), args tuple containing single element.

args=(parameter) equivalent args=parameter. when that, each element of parameter passed separate argument objective function.


Comments

Post a Comment

Popular posts from this blog

searchKeyword not working in AngularJS filter -

i writing app using angularjs on front end. want search through table word/field; 1 search box everything. according article here: http://hello-angularjs.appspot.com/searchtable can use filter: searchkeyword this. this code, , not working expected. <label>search: <input ng-model="searchkeyword"></label> <table ng-repeat="post in posts | orderby: sort | filter: searchkeyword"> <tr> <td> {{index(post)}} </td> <td> {{post.title}} </td> <td> {{post.author}} </td> <td> {{post.content}} </td> <td> {{post.date | date: "d/m/yyyy"}} </td> </tr> </table> what should do? thank you try this: controller $scope.posts = [ {title:'title one', author:'author one', content: 'content one'}, {title:'title two', author:'author two', content: 'cont...
Read more

sequelize.js - Sequelize: sort by enum cases -

i have model ( article ) field (the name type ) of type enum('source', 'translated') , return 1 article ordered type field. source articles should returned before translated articles. like: article.findone(order: [ { type: [ 'source', 'translated' ] } ]); unfortunately there appears no built-in solution sorting enums. instead have sort by case , couldn't find documentation on how sequelize. what conventional approach here? sorting case hard in sequelize, sort field (the second answer in linked post) should possible: order: sequelize.fn('field', sequelize.col('type'), 'source', 'translated') it's supported mysql far know though
Read more

user interface - how to replace an ongoing process of image capture from another process call over the same ImageLabel in python's GUI TKinter -

i trying use following code create interactive gui changes color-space(hsv, rbg, grayscale etc) on event of button click. display opencv video in tkinter using multiprocessing being new python having problems multiprocessing , attempts on making gui change it's color space on button clicks hangs entire system. on it's implementation highly appreciated. thankyou. below code: import cv2 pil import image,imagetk import tkinter tk import numpy np multiprocessing import process , queue def quit_it(root,process): root.destroy() process.terminate() def black_andwhite(root,process): process.terminate p=process(target=capture_image, args=(5,queue, )) p.start() root.after(0, func=lambda: update_all(root, image_label, queue)) def update_image(image_label, queue): frame = queue.get() = image.fromarray(frame) b = imagetk.photoimage(image=a) image_label.configure(image=b) image_label._image_cache = b root.update() def update_all(root...
Read more