Scipy.optimize.mininize get number of function evaluations












-1















I would like to store the number of function evaluations (Fevals) made by a Scipy optimization algorithm in an external variable to count the final number of evaluations made by the entire program (Scipy is repeated many times).










share|improve this question





























    -1















    I would like to store the number of function evaluations (Fevals) made by a Scipy optimization algorithm in an external variable to count the final number of evaluations made by the entire program (Scipy is repeated many times).










    share|improve this question



























      -1












      -1








      -1








      I would like to store the number of function evaluations (Fevals) made by a Scipy optimization algorithm in an external variable to count the final number of evaluations made by the entire program (Scipy is repeated many times).










      share|improve this question
















      I would like to store the number of function evaluations (Fevals) made by a Scipy optimization algorithm in an external variable to count the final number of evaluations made by the entire program (Scipy is repeated many times).







      python optimization scipy






      share|improve this question















      share|improve this question













      share|improve this question




      share|improve this question








      edited Nov 27 '18 at 21:44









      Mad Physicist

      38k1674108




      38k1674108










      asked Nov 27 '18 at 20:54









      DCCCCCDCCCCC

      31




      31
























          2 Answers
          2






          active

          oldest

          votes


















          1














          You can extract it out from the optimization object and add the value at every outer Scipy call. In order to see how to get the number of function evaluations please see this scipy documentation. You can refer to the examples on the same page to inspect an example.



          In case this does not help, you may wrap your cost function and try something like this:



          class F(object):

          def __init__(self, fn):

          self.n_calls = 0
          self.fn = fn

          def __call__(self, x):

          self.n_calls += 1
          return self.fn(x)

          return F(fn)





          share|improve this answer

































            0














            Use the callback argument to pass a function that will increment a global integer.






            share|improve this answer























              Your Answer






              StackExchange.ifUsing("editor", function () {
              StackExchange.using("externalEditor", function () {
              StackExchange.using("snippets", function () {
              StackExchange.snippets.init();
              });
              });
              }, "code-snippets");

              StackExchange.ready(function() {
              var channelOptions = {
              tags: "".split(" "),
              id: "1"
              };
              initTagRenderer("".split(" "), "".split(" "), channelOptions);

              StackExchange.using("externalEditor", function() {
              // Have to fire editor after snippets, if snippets enabled
              if (StackExchange.settings.snippets.snippetsEnabled) {
              StackExchange.using("snippets", function() {
              createEditor();
              });
              }
              else {
              createEditor();
              }
              });

              function createEditor() {
              StackExchange.prepareEditor({
              heartbeatType: 'answer',
              autoActivateHeartbeat: false,
              convertImagesToLinks: true,
              noModals: true,
              showLowRepImageUploadWarning: true,
              reputationToPostImages: 10,
              bindNavPrevention: true,
              postfix: "",
              imageUploader: {
              brandingHtml: "Powered by u003ca class="icon-imgur-white" href="https://imgur.com/"u003eu003c/au003e",
              contentPolicyHtml: "User contributions licensed under u003ca href="https://creativecommons.org/licenses/by-sa/3.0/"u003ecc by-sa 3.0 with attribution requiredu003c/au003e u003ca href="https://stackoverflow.com/legal/content-policy"u003e(content policy)u003c/au003e",
              allowUrls: true
              },
              onDemand: true,
              discardSelector: ".discard-answer"
              ,immediatelyShowMarkdownHelp:true
              });


              }
              });














              draft saved

              draft discarded


















              StackExchange.ready(
              function () {
              StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f53507995%2fscipy-optimize-mininize-get-number-of-function-evaluations%23new-answer', 'question_page');
              }
              );

              Post as a guest















              Required, but never shown

























              2 Answers
              2






              active

              oldest

              votes








              2 Answers
              2






              active

              oldest

              votes









              active

              oldest

              votes






              active

              oldest

              votes









              1














              You can extract it out from the optimization object and add the value at every outer Scipy call. In order to see how to get the number of function evaluations please see this scipy documentation. You can refer to the examples on the same page to inspect an example.



              In case this does not help, you may wrap your cost function and try something like this:



              class F(object):

              def __init__(self, fn):

              self.n_calls = 0
              self.fn = fn

              def __call__(self, x):

              self.n_calls += 1
              return self.fn(x)

              return F(fn)





              share|improve this answer






























                1














                You can extract it out from the optimization object and add the value at every outer Scipy call. In order to see how to get the number of function evaluations please see this scipy documentation. You can refer to the examples on the same page to inspect an example.



                In case this does not help, you may wrap your cost function and try something like this:



                class F(object):

                def __init__(self, fn):

                self.n_calls = 0
                self.fn = fn

                def __call__(self, x):

                self.n_calls += 1
                return self.fn(x)

                return F(fn)





                share|improve this answer




























                  1












                  1








                  1







                  You can extract it out from the optimization object and add the value at every outer Scipy call. In order to see how to get the number of function evaluations please see this scipy documentation. You can refer to the examples on the same page to inspect an example.



                  In case this does not help, you may wrap your cost function and try something like this:



                  class F(object):

                  def __init__(self, fn):

                  self.n_calls = 0
                  self.fn = fn

                  def __call__(self, x):

                  self.n_calls += 1
                  return self.fn(x)

                  return F(fn)





                  share|improve this answer















                  You can extract it out from the optimization object and add the value at every outer Scipy call. In order to see how to get the number of function evaluations please see this scipy documentation. You can refer to the examples on the same page to inspect an example.



                  In case this does not help, you may wrap your cost function and try something like this:



                  class F(object):

                  def __init__(self, fn):

                  self.n_calls = 0
                  self.fn = fn

                  def __call__(self, x):

                  self.n_calls += 1
                  return self.fn(x)

                  return F(fn)






                  share|improve this answer














                  share|improve this answer



                  share|improve this answer








                  edited Nov 27 '18 at 21:30

























                  answered Nov 27 '18 at 21:19









                  T-800T-800

                  817918




                  817918

























                      0














                      Use the callback argument to pass a function that will increment a global integer.






                      share|improve this answer




























                        0














                        Use the callback argument to pass a function that will increment a global integer.






                        share|improve this answer


























                          0












                          0








                          0







                          Use the callback argument to pass a function that will increment a global integer.






                          share|improve this answer













                          Use the callback argument to pass a function that will increment a global integer.







                          share|improve this answer












                          share|improve this answer



                          share|improve this answer










                          answered Nov 27 '18 at 21:18









                          SilmathoronSilmathoron

                          1,0611921




                          1,0611921






























                              draft saved

                              draft discarded




















































                              Thanks for contributing an answer to Stack Overflow!


                              • Please be sure to answer the question. Provide details and share your research!

                              But avoid



                              • Asking for help, clarification, or responding to other answers.

                              • Making statements based on opinion; back them up with references or personal experience.


                              To learn more, see our tips on writing great answers.




                              draft saved


                              draft discarded














                              StackExchange.ready(
                              function () {
                              StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f53507995%2fscipy-optimize-mininize-get-number-of-function-evaluations%23new-answer', 'question_page');
                              }
                              );

                              Post as a guest















                              Required, but never shown





















































                              Required, but never shown














                              Required, but never shown












                              Required, but never shown







                              Required, but never shown

































                              Required, but never shown














                              Required, but never shown












                              Required, but never shown







                              Required, but never shown







                              Popular posts from this blog

                              A CLEAN and SIMPLE way to add appendices to Table of Contents and bookmarks

                              Calculate evaluation metrics using cross_val_predict sklearn

                              Insert data from modal to MySQL (multiple modal on website)