What clustering algorithm should I use for 2D points? The Next CEO of Stack Overflow2019 Community Moderator ElectionDiscovering dis-associations between periods of time-seriesFast k-means like algorithm for 10^10 points?Algorithm for deriving mutiple clustersExpectation number of points in initial clustering for LSHSeeking Appropriate Clustering AlgorithmClustering documents - how to evaluate results?Data model and algorithm for recommending “related” interestsWhat clustering algorithm is appropriate for clustering paths?Clustering algorithm for a distance matrixCommon cluster points between different runs

How to disable updates in WordPress theme

How do scammers retract money, while you can’t?

MAZDA 3 2006 (UK) - poor acceleration then takes off at 3250 revs

How do I construct this japanese bowl?

Trouble understanding the speech of overseas colleagues

Why is Miller's case titled R (Miller)?

Grabbing quick drinks

Opamp stability given in not inverting configuration

Can a caster that cast polymorph on itself end it at any point even if their Int is low?

Can a single photon have an energy density?

How to be diplomatic in refusing to write code that breaches the privacy of our users

Why do remote companies require working in the US?

How to make a variable always equal to the result of some calculations?

Is there a good way to store credentials outside of a password manager?

Implement the Thanos sorting algorithm

Opposite of a diet

What is the difference between "behavior" and "behaviour"?

What is the purpose of the Potent Cantrip ability?

How can I get through very long and very dry, but also very useful technical documents when learning a new tool?

Is it a good idea to use COLUMN AS (left([Another_Column],(4)) insetead of LEFT in the select?

% symbol leads to superlong (forever?) compilations

How do we know the LHC results are robust?

Fastest way to shutdown Ubuntu Mate 18.10

Is a stroke of luck acceptable after a series of unfavorable events?



What clustering algorithm should I use for 2D points?



The Next CEO of Stack Overflow
2019 Community Moderator ElectionDiscovering dis-associations between periods of time-seriesFast k-means like algorithm for 10^10 points?Algorithm for deriving mutiple clustersExpectation number of points in initial clustering for LSHSeeking Appropriate Clustering AlgorithmClustering documents - how to evaluate results?Data model and algorithm for recommending “related” interestsWhat clustering algorithm is appropriate for clustering paths?Clustering algorithm for a distance matrixCommon cluster points between different runs










0












$begingroup$


E.g., I've got a list (~50'000) of 2D points and I'd like to run any clusterization algorithms such that it'll automatically find a list of clusters given a diameter.










share|improve this question







New contributor




Alex is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.







$endgroup$











  • $begingroup$
    IMO the first thing to do with 2D data is plot the points. In general, a human analyst should be able to spot the interesting patterns. Since you have a decent amount of data, reducing the alpha/transparency of the dots may aid in visualizing density of the points.
    $endgroup$
    – Mephy
    57 mins ago















0












$begingroup$


E.g., I've got a list (~50'000) of 2D points and I'd like to run any clusterization algorithms such that it'll automatically find a list of clusters given a diameter.










share|improve this question







New contributor




Alex is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.







$endgroup$











  • $begingroup$
    IMO the first thing to do with 2D data is plot the points. In general, a human analyst should be able to spot the interesting patterns. Since you have a decent amount of data, reducing the alpha/transparency of the dots may aid in visualizing density of the points.
    $endgroup$
    – Mephy
    57 mins ago













0












0








0





$begingroup$


E.g., I've got a list (~50'000) of 2D points and I'd like to run any clusterization algorithms such that it'll automatically find a list of clusters given a diameter.










share|improve this question







New contributor




Alex is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.







$endgroup$




E.g., I've got a list (~50'000) of 2D points and I'd like to run any clusterization algorithms such that it'll automatically find a list of clusters given a diameter.







clustering






share|improve this question







New contributor




Alex is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.











share|improve this question







New contributor




Alex is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.









share|improve this question




share|improve this question






New contributor




Alex is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.









asked 1 hour ago









AlexAlex

1




1




New contributor




Alex is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.





New contributor





Alex is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.






Alex is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.











  • $begingroup$
    IMO the first thing to do with 2D data is plot the points. In general, a human analyst should be able to spot the interesting patterns. Since you have a decent amount of data, reducing the alpha/transparency of the dots may aid in visualizing density of the points.
    $endgroup$
    – Mephy
    57 mins ago
















  • $begingroup$
    IMO the first thing to do with 2D data is plot the points. In general, a human analyst should be able to spot the interesting patterns. Since you have a decent amount of data, reducing the alpha/transparency of the dots may aid in visualizing density of the points.
    $endgroup$
    – Mephy
    57 mins ago















$begingroup$
IMO the first thing to do with 2D data is plot the points. In general, a human analyst should be able to spot the interesting patterns. Since you have a decent amount of data, reducing the alpha/transparency of the dots may aid in visualizing density of the points.
$endgroup$
– Mephy
57 mins ago




$begingroup$
IMO the first thing to do with 2D data is plot the points. In general, a human analyst should be able to spot the interesting patterns. Since you have a decent amount of data, reducing the alpha/transparency of the dots may aid in visualizing density of the points.
$endgroup$
– Mephy
57 mins ago










1 Answer
1






active

oldest

votes


















0












$begingroup$

You can use DBSCAN or Quadtree for this purpose. These Algos reduce 2D search space so that clustering does not become n*n in complexity.



Explanation of Quadtree :



https://jimkang.com/quadtreevis/






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
    );



    );






    Alex is a new contributor. Be nice, and check out our Code of Conduct.









    draft saved

    draft discarded


















    StackExchange.ready(
    function ()
    StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fdatascience.stackexchange.com%2fquestions%2f48162%2fwhat-clustering-algorithm-should-i-use-for-2d-points%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












    $begingroup$

    You can use DBSCAN or Quadtree for this purpose. These Algos reduce 2D search space so that clustering does not become n*n in complexity.



    Explanation of Quadtree :



    https://jimkang.com/quadtreevis/






    share|improve this answer









    $endgroup$

















      0












      $begingroup$

      You can use DBSCAN or Quadtree for this purpose. These Algos reduce 2D search space so that clustering does not become n*n in complexity.



      Explanation of Quadtree :



      https://jimkang.com/quadtreevis/






      share|improve this answer









      $endgroup$















        0












        0








        0





        $begingroup$

        You can use DBSCAN or Quadtree for this purpose. These Algos reduce 2D search space so that clustering does not become n*n in complexity.



        Explanation of Quadtree :



        https://jimkang.com/quadtreevis/






        share|improve this answer









        $endgroup$



        You can use DBSCAN or Quadtree for this purpose. These Algos reduce 2D search space so that clustering does not become n*n in complexity.



        Explanation of Quadtree :



        https://jimkang.com/quadtreevis/







        share|improve this answer












        share|improve this answer



        share|improve this answer










        answered 45 mins ago









        Shamit VermaShamit Verma

        1,039211




        1,039211




















            Alex is a new contributor. Be nice, and check out our Code of Conduct.









            draft saved

            draft discarded


















            Alex is a new contributor. Be nice, and check out our Code of Conduct.












            Alex is a new contributor. Be nice, and check out our Code of Conduct.











            Alex is a new contributor. Be nice, and check out our Code of Conduct.














            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%2f48162%2fwhat-clustering-algorithm-should-i-use-for-2d-points%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

            Ружовы пелікан Змест Знешні выгляд | Пашырэнне | Асаблівасці біялогіі | Літаратура | НавігацыяДагледжаная версіяправерана1 зменаДагледжаная версіяправерана1 змена/ 22697590 Сістэматыкана ВіківідахВыявына Вікісховішчы174693363011049382

            ValueError: Error when checking input: expected conv2d_13_input to have shape (3, 150, 150) but got array with shape (150, 150, 3)2019 Community Moderator ElectionError when checking : expected dense_1_input to have shape (None, 5) but got array with shape (200, 1)Error 'Expected 2D array, got 1D array instead:'ValueError: Error when checking input: expected lstm_41_input to have 3 dimensions, but got array with shape (40000,100)ValueError: Error when checking target: expected dense_1 to have shape (7,) but got array with shape (1,)ValueError: Error when checking target: expected dense_2 to have shape (1,) but got array with shape (0,)Keras exception: ValueError: Error when checking input: expected conv2d_1_input to have shape (150, 150, 3) but got array with shape (256, 256, 3)Steps taking too long to completewhen checking input: expected dense_1_input to have shape (13328,) but got array with shape (317,)ValueError: Error when checking target: expected dense_3 to have shape (None, 1) but got array with shape (7715, 40000)Keras exception: Error when checking input: expected dense_input to have shape (2,) but got array with shape (1,)

            Illegal assignment from SObject to ContactFetching String, Id from Map - Illegal Assignment Id to Field / ObjectError: Compile Error: Illegal assignment from String to BooleanError: List has no rows for assignment to SObjectError on Test Class - System.QueryException: List has no rows for assignment to SObjectRemote action problemDML requires SObject or SObject list type error“Illegal assignment from List to List”Test Class Fail: Batch Class: System.QueryException: List has no rows for assignment to SObjectMapping to a user'List has no rows for assignment to SObject' Mystery