What does the pair of vertical lines in empirical entropy formula mean?Is it ok to interprete PCA plot this way?What is the Q function and what is the V function in reinforcement learning?Image Captioning example in keras Approach?What is this formula, related to simple linear regression, called?PCA algorithm problems - PythonWhat does “likelihood” mean in the image?Clamping Q function to it's theoretical maximum, yes or no?How does binary cross entropy work?learning curve SklearnQ learning transition matrix trouble

Why did Intel abandon unified CPU cache?

How do free-speech protections in the United States apply in public to corporate misrepresentations?

Fermat's statement about the ancients: How serious was he?

Is there a DSLR/mirorless camera with minimal options like a classic, simple SLR?

Write a function that checks if a string starts with or contains something

How can I make 12 tone and atonal melodies sound interesting?

How to prove a 4D vector is a 4-Vector?

Origin of "boor"

I've been given a project I can't complete, what should I do?

How to befriend someone who doesn't like to talk?

Should I refuse to be named as co-author of a low quality paper?

Amplitude of a crest and trough in a sound wave?

Why Does Mama Coco Look Old After Going to the Other World?

Does a bank have to tell me if a check made out to me was cashed there?

Electricity free spaceship

Why is long-term living in Almost-Earth causing severe health problems?

I have a problematic assistant manager, but I can't fire him

Why is Na5 not played in this line of the French Defense, Advance Variation?

What STL algorithm can determine if exactly one item in a container satisfies a predicate?

Do people with slow metabolism tend to gain weight (fat) if they stop exercising?

Did Apple bundle a specific monitor with the Apple II+ for schools?

Who voices the small round football sized demon In Good Omens

What is the color of artificial intelligence?

Should I put programming books I wrote a few years ago on my resume?



What does the pair of vertical lines in empirical entropy formula mean?


Is it ok to interprete PCA plot this way?What is the Q function and what is the V function in reinforcement learning?Image Captioning example in keras Approach?What is this formula, related to simple linear regression, called?PCA algorithm problems - PythonWhat does “likelihood” mean in the image?Clamping Q function to it's theoretical maximum, yes or no?How does binary cross entropy work?learning curve SklearnQ learning transition matrix trouble













2












$begingroup$


I am learning from this post.



$alpha$ is the ratio of the first subset,



$$alpha=fracleftDright$$



according to the context and code of the post, $left|Dright|$ means the number of samples?



  • What are the pair of vertical lines called?

Is it the L1 norm symbol? It does not seem to be the absolute value symbol.










share|improve this question











$endgroup$
















    2












    $begingroup$


    I am learning from this post.



    $alpha$ is the ratio of the first subset,



    $$alpha=fracleftDright$$



    according to the context and code of the post, $left|Dright|$ means the number of samples?



    • What are the pair of vertical lines called?

    Is it the L1 norm symbol? It does not seem to be the absolute value symbol.










    share|improve this question











    $endgroup$














      2












      2








      2





      $begingroup$


      I am learning from this post.



      $alpha$ is the ratio of the first subset,



      $$alpha=fracleftDright$$



      according to the context and code of the post, $left|Dright|$ means the number of samples?



      • What are the pair of vertical lines called?

      Is it the L1 norm symbol? It does not seem to be the absolute value symbol.










      share|improve this question











      $endgroup$




      I am learning from this post.



      $alpha$ is the ratio of the first subset,



      $$alpha=fracleftDright$$



      according to the context and code of the post, $left|Dright|$ means the number of samples?



      • What are the pair of vertical lines called?

      Is it the L1 norm symbol? It does not seem to be the absolute value symbol.







      machine-learning notation






      share|improve this question















      share|improve this question













      share|improve this question




      share|improve this question








      edited 1 hour ago







      Jay

















      asked 16 hours ago









      JayJay

      1424




      1424




















          1 Answer
          1






          active

          oldest

          votes


















          5












          $begingroup$

          $D$ is a set which is further divided into sets $D_1$ and $D_2$. In this context the vertical lines represent the cardinality of the set i.e. the number of elements in the set. Hence, $alpha$ represents the ratio of number of samples of $D_1$ to $D$.






          share|improve this answer









          $endgroup$













            Your Answer








            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%2f53429%2fwhat-does-the-pair-of-vertical-lines-in-empirical-entropy-formula-mean%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









            5












            $begingroup$

            $D$ is a set which is further divided into sets $D_1$ and $D_2$. In this context the vertical lines represent the cardinality of the set i.e. the number of elements in the set. Hence, $alpha$ represents the ratio of number of samples of $D_1$ to $D$.






            share|improve this answer









            $endgroup$

















              5












              $begingroup$

              $D$ is a set which is further divided into sets $D_1$ and $D_2$. In this context the vertical lines represent the cardinality of the set i.e. the number of elements in the set. Hence, $alpha$ represents the ratio of number of samples of $D_1$ to $D$.






              share|improve this answer









              $endgroup$















                5












                5








                5





                $begingroup$

                $D$ is a set which is further divided into sets $D_1$ and $D_2$. In this context the vertical lines represent the cardinality of the set i.e. the number of elements in the set. Hence, $alpha$ represents the ratio of number of samples of $D_1$ to $D$.






                share|improve this answer









                $endgroup$



                $D$ is a set which is further divided into sets $D_1$ and $D_2$. In this context the vertical lines represent the cardinality of the set i.e. the number of elements in the set. Hence, $alpha$ represents the ratio of number of samples of $D_1$ to $D$.







                share|improve this answer












                share|improve this answer



                share|improve this answer










                answered 14 hours ago









                bkshibkshi

                900415




                900415



























                    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%2f53429%2fwhat-does-the-pair-of-vertical-lines-in-empirical-entropy-formula-mean%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

                    Invision Community Contents History See also References External links Navigation menuProprietaryinvisioncommunity.comIPS Community ForumsIPS Community Forumsthis blog entry"License Changes, IP.Board 3.4, and the Future""Interview -- Matt Mecham of Ibforums""CEO Invision Power Board, Matt Mecham Is a Liar, Thief!"IPB License Explanation 1.3, 1.3.1, 2.0, and 2.1ArchivedSecurity Fixes, Updates And Enhancements For IPB 1.3.1Archived"New Demo Accounts - Invision Power Services"the original"New Default Skin"the original"Invision Power Board 3.0.0 and Applications Released"the original"Archived copy"the original"Perpetual licenses being done away with""Release Notes - Invision Power Services""Introducing: IPS Community Suite 4!"Invision Community Release Notes

                    Canceling a color specificationRandomly assigning color to Graphics3D objects?Default color for Filling in Mathematica 9Coloring specific elements of sets with a prime modified order in an array plotHow to pick a color differing significantly from the colors already in a given color list?Detection of the text colorColor numbers based on their valueCan color schemes for use with ColorData include opacity specification?My dynamic color schemes

                    Ласкавець круглолистий Зміст Опис | Поширення | Галерея | Примітки | Посилання | Навігаційне меню58171138361-22960890446Bupleurum rotundifoliumEuro+Med PlantbasePlants of the World Online — Kew ScienceGermplasm Resources Information Network (GRIN)Ласкавецькн. VI : Літери Ком — Левиправивши або дописавши її