Confusion matrix in multilabel classification of an object in more than one class simultaneously












2












$begingroup$


Regarding a classification problem where for example given an image which depicts a human and we are trying to predict their stance and their behavior. For example Human 1: 'Sitting' and 'Eating' in the first image whilst Human 2: 'Standing up' and 'laughing' in the second. What is the appropriate way of applying the confusion matrix on the predictions. Do I have to unify the predictions?



E.g we have 5 different stances and 5 different behaviors, as a result the confusion matrix is of size 25x25 because we have 25 different classes. Or is there any other way of dealing with such problems?



Is it possible to do the same with multiple objects on an image and how?










share|improve this question









$endgroup$

















    2












    $begingroup$


    Regarding a classification problem where for example given an image which depicts a human and we are trying to predict their stance and their behavior. For example Human 1: 'Sitting' and 'Eating' in the first image whilst Human 2: 'Standing up' and 'laughing' in the second. What is the appropriate way of applying the confusion matrix on the predictions. Do I have to unify the predictions?



    E.g we have 5 different stances and 5 different behaviors, as a result the confusion matrix is of size 25x25 because we have 25 different classes. Or is there any other way of dealing with such problems?



    Is it possible to do the same with multiple objects on an image and how?










    share|improve this question









    $endgroup$















      2












      2








      2





      $begingroup$


      Regarding a classification problem where for example given an image which depicts a human and we are trying to predict their stance and their behavior. For example Human 1: 'Sitting' and 'Eating' in the first image whilst Human 2: 'Standing up' and 'laughing' in the second. What is the appropriate way of applying the confusion matrix on the predictions. Do I have to unify the predictions?



      E.g we have 5 different stances and 5 different behaviors, as a result the confusion matrix is of size 25x25 because we have 25 different classes. Or is there any other way of dealing with such problems?



      Is it possible to do the same with multiple objects on an image and how?










      share|improve this question









      $endgroup$




      Regarding a classification problem where for example given an image which depicts a human and we are trying to predict their stance and their behavior. For example Human 1: 'Sitting' and 'Eating' in the first image whilst Human 2: 'Standing up' and 'laughing' in the second. What is the appropriate way of applying the confusion matrix on the predictions. Do I have to unify the predictions?



      E.g we have 5 different stances and 5 different behaviors, as a result the confusion matrix is of size 25x25 because we have 25 different classes. Or is there any other way of dealing with such problems?



      Is it possible to do the same with multiple objects on an image and how?







      multilabel-classification confusion-matrix






      share|improve this question













      share|improve this question











      share|improve this question




      share|improve this question










      asked yesterday









      Dimimal13Dimimal13

      185




      185






















          1 Answer
          1






          active

          oldest

          votes


















          0












          $begingroup$

          Confusion matrix is generally not considered as a useful tool to evaluvate our model for multiclass classification and we rather use what is known as AUC-ROC curve.



          AUC stands for Area Under Curve whereas ROC stands for Reciever Operating Curve. AUC - ROC curve is a performance measurement for classification problem at various thresholds settings. ROC is a probability curve and AUC represents degree or measure of separability. It tells how much model is capable of distinguishing between classes.



          Here is a detailed explaination about the AUC-ROC curve.






          share|improve this answer









          $endgroup$













            Your Answer





            StackExchange.ifUsing("editor", function () {
            return StackExchange.using("mathjaxEditing", function () {
            StackExchange.MarkdownEditor.creationCallbacks.add(function (editor, postfix) {
            StackExchange.mathjaxEditing.prepareWmdForMathJax(editor, postfix, [["$", "$"], ["\\(","\\)"]]);
            });
            });
            }, "mathjax-editing");

            StackExchange.ready(function() {
            var channelOptions = {
            tags: "".split(" "),
            id: "557"
            };
            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: false,
            noModals: true,
            showLowRepImageUploadWarning: true,
            reputationToPostImages: null,
            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%2fdatascience.stackexchange.com%2fquestions%2f46220%2fconfusion-matrix-in-multilabel-classification-of-an-object-in-more-than-one-clas%23new-answer', 'question_page');
            }
            );

            Post as a guest















            Required, but never shown

























            1 Answer
            1






            active

            oldest

            votes








            1 Answer
            1






            active

            oldest

            votes









            active

            oldest

            votes






            active

            oldest

            votes









            0












            $begingroup$

            Confusion matrix is generally not considered as a useful tool to evaluvate our model for multiclass classification and we rather use what is known as AUC-ROC curve.



            AUC stands for Area Under Curve whereas ROC stands for Reciever Operating Curve. AUC - ROC curve is a performance measurement for classification problem at various thresholds settings. ROC is a probability curve and AUC represents degree or measure of separability. It tells how much model is capable of distinguishing between classes.



            Here is a detailed explaination about the AUC-ROC curve.






            share|improve this answer









            $endgroup$


















              0












              $begingroup$

              Confusion matrix is generally not considered as a useful tool to evaluvate our model for multiclass classification and we rather use what is known as AUC-ROC curve.



              AUC stands for Area Under Curve whereas ROC stands for Reciever Operating Curve. AUC - ROC curve is a performance measurement for classification problem at various thresholds settings. ROC is a probability curve and AUC represents degree or measure of separability. It tells how much model is capable of distinguishing between classes.



              Here is a detailed explaination about the AUC-ROC curve.






              share|improve this answer









              $endgroup$
















                0












                0








                0





                $begingroup$

                Confusion matrix is generally not considered as a useful tool to evaluvate our model for multiclass classification and we rather use what is known as AUC-ROC curve.



                AUC stands for Area Under Curve whereas ROC stands for Reciever Operating Curve. AUC - ROC curve is a performance measurement for classification problem at various thresholds settings. ROC is a probability curve and AUC represents degree or measure of separability. It tells how much model is capable of distinguishing between classes.



                Here is a detailed explaination about the AUC-ROC curve.






                share|improve this answer









                $endgroup$



                Confusion matrix is generally not considered as a useful tool to evaluvate our model for multiclass classification and we rather use what is known as AUC-ROC curve.



                AUC stands for Area Under Curve whereas ROC stands for Reciever Operating Curve. AUC - ROC curve is a performance measurement for classification problem at various thresholds settings. ROC is a probability curve and AUC represents degree or measure of separability. It tells how much model is capable of distinguishing between classes.



                Here is a detailed explaination about the AUC-ROC curve.







                share|improve this answer












                share|improve this answer



                share|improve this answer










                answered 35 mins ago









                thanatozthanatoz

                401214




                401214






























                    draft saved

                    draft discarded




















































                    Thanks for contributing an answer to Data Science Stack Exchange!


                    • 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.


                    Use MathJax to format equations. MathJax reference.


                    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%2fdatascience.stackexchange.com%2fquestions%2f46220%2fconfusion-matrix-in-multilabel-classification-of-an-object-in-more-than-one-clas%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

                    How to label and detect the document text images

                    Vallis Paradisi

                    Tabula Rosettana