Ignore:
Timestamp:
02/27/13 15:02:50 (14 months ago)
Author:
Ales Erjavec <ales.erjavec@…>
Branch:
default
Message:

Cleanup of 'Widget catalog' documentation.

Fixed rst text formating, replaced dead hardcoded reference links (now using
:ref:), etc.

File:
1 edited

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  • docs/widgets/rst/classify/classificationtreeviewer.rst

    r11050 r11359  
    2424 
    2525 
    26 Signal :code:`Classified Examples` sends data only if some tree node is selected and contains some examples. 
     26Signal :code:`Classified Examples` sends data only if some tree node is 
     27selected and contains some examples. 
    2728 
    2829Description 
    2930----------- 
    3031 
    31 The widget shows the tree as a hierarchy in a textual form. Although less fancy than the graphical viewer, much more information fits in a Tree Viewer's window than in the graphical viewer's one. 
     32The widget shows the tree as a hierarchy in a textual form. Although less 
     33fancy than the graphical viewer, much more information fits in a Tree Viewer's 
     34window than in the graphical viewer's one. 
    3235 
    3336.. image:: images/ClassificationTreeViewer.png 
    3437   :alt: Classification Tree Viewer widget 
    3538 
    36 The widget's options allow choosing the columns to be displayed, setting the general depth of the display (individual nodes can, of course, be opened and closed manually). 
     39The widget's options allow choosing the columns to be displayed, setting the 
     40general depth of the display (individual nodes can, of course, be opened and 
     41closed manually). 
    3742 
    38 On the right hand side there is the tree, where it is possible to select a single node. The rule describing the particular node is shown at the bottom, and the training examples belonging to the node are put on the output. 
     43On the right hand side there is the tree, where it is possible to select a 
     44single node. The rule describing the particular node is shown at the bottom, 
     45and the training examples belonging to the node are put on the output. 
    3946 
    4047 
     
    4249-------- 
    4350 
    44 The obvious use for the widget browsing the induced tree. Orange Canvas, however, offers something more exciting: the widget can be used for exploring the examples belonging to a certain node through using any other widget. If you are a beginner: this widget's output behaves exactly like the output of the file widget, with the exception that instead of reading the examples from a file, it gets them from the tree. 
     51The obvious use for the widget browsing the induced tree. Orange Canvas, 
     52however, offers something more exciting: the widget can be used for exploring 
     53the examples belonging to a certain node through using any other widget. 
     54If you are a beginner: this widget's output behaves exactly like the output 
     55of the file widget, with the exception that instead of reading the examples 
     56from a file, it gets them from the tree. 
    4557 
    4658.. image:: images/ClassificationTreeViewer-Schema.png 
    4759   :alt: A schema with Classification Tree Viewer 
    4860 
    49 In the above example we constructed a tree from the Wisconsin breast cancer data. We explore the tree nodes by feeding the examples in the Data Table (boring!), by checking the attribute value distributions for each node and seeing where the examples lie in the Scatter plot. To make the latter more informative, the Scatter plot shows the entire data set (examples from the File Widget), but marking - by plotting solid symbols instead of hollow ones - the examples belonging to the particular tree node, as shown in the snapshot below. 
     61In the above example we constructed a tree from the Wisconsin breast cancer 
     62data. We explore the tree nodes by feeding the examples in the Data Table, 
     63by checking the attribute value distributions for each node and 
     64seeing where the examples lie in the Scatter plot. To make the latter more 
     65informative, the Scatter plot shows the entire data set (examples from the 
     66File Widget), but marking - by plotting solid symbols instead of hollow ones 
     67- the examples belonging to the particular tree node, as shown in the 
     68snapshot below. 
    5069 
    5170.. image:: images/ClassificationTreeViewer-Example-S.png 
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