source: orange/Orange/OrangeCanvas/application/tutorials/450-cross-validation.ows @ 11381:e7185f522cc8

Revision 11381:e7185f522cc8, 7.3 KB checked in by blaz <blaz.zupan@…>, 14 months ago (diff)

Another tutorial schema.

Line 
1<?xml version='1.0' encoding='utf-8'?>
2<scheme description="How good are supervised data mining methods on your classification data set? Here's a schema that scores various classification techniques on a data set from medicine. A central widget here is the one for evaluation, which is given the data and a set of learners, does cross-validation and scores predictive accuracy, and outputs the scores for further examination." title="Cross-Validation" version="2.0">
3    <nodes>
4        <node id="0" name="File" position="(96.0, 134.0)" project_name="Orange" qualified_name="Orange.OrangeWidgets.Data.OWFile.OWFile" title="File" version="" />
5        <node id="1" name="Naive Bayes" position="(175.0, 253.0)" project_name="Orange" qualified_name="Orange.OrangeWidgets.Classify.OWNaiveBayes.OWNaiveBayes" title="Naive Bayes" version="" />
6        <node id="2" name="k Nearest Neighbours" position="(170.0, 448.0)" project_name="Orange" qualified_name="Orange.OrangeWidgets.Classify.OWKNN.OWKNN" title="k Nearest Neighbours" version="" />
7        <node id="3" name="Random Forest" position="(169.0, 356.0)" project_name="Orange" qualified_name="Orange.OrangeWidgets.Classify.OWRandomForest.OWRandomForest" title="Random Forest" version="" />
8        <node id="4" name="Test Learners" position="(350.0, 188.0)" project_name="Orange" qualified_name="Orange.OrangeWidgets.Evaluate.OWTestLearners.OWTestLearners" title="Test Learners" version="" />
9        <node id="5" name="Data Table" position="(285.0, 58.0)" project_name="Orange" qualified_name="Orange.OrangeWidgets.Data.OWDataTable.OWDataTable" title="Data Table" version="" />
10        <node id="6" name="Confusion Matrix" position="(535.0, 188.0)" project_name="Orange" qualified_name="Orange.OrangeWidgets.Evaluate.OWConfusionMatrix.OWConfusionMatrix" title="Confusion Matrix" version="" />
11        <node id="7" name="Data Table" position="(735.0, 188.0)" project_name="Orange" qualified_name="Orange.OrangeWidgets.Data.OWDataTable.OWDataTable" title="Data Table (1)" version="" />
12    </nodes>
13    <links>
14        <link enabled="true" id="0" sink_channel="Data" sink_node_id="5" source_channel="Data" source_node_id="0" />
15        <link enabled="true" id="1" sink_channel="Learner" sink_node_id="4" source_channel="Learner" source_node_id="1" />
16        <link enabled="true" id="2" sink_channel="Learner" sink_node_id="4" source_channel="Learner" source_node_id="3" />
17        <link enabled="true" id="3" sink_channel="Learner" sink_node_id="4" source_channel="Learner" source_node_id="2" />
18        <link enabled="true" id="4" sink_channel="Data" sink_node_id="4" source_channel="Data" source_node_id="0" />
19        <link enabled="true" id="5" sink_channel="Evaluation Results" sink_node_id="6" source_channel="Evaluation Results" source_node_id="4" />
20        <link enabled="true" id="6" sink_channel="Data" sink_node_id="7" source_channel="Selected Data" source_node_id="6" />
21    </links>
22    <annotations>
23        <text font-family="Helvetica" font-size="12" id="0" rect="(34.0, 30.0, 96.0, 48.0)">Class-labeled
24data set</text>
25        <arrow end="(82.0, 104.0)" fill="#C1272D" id="1" start="(63.0, 71.0)" />
26        <arrow end="(262.0, 411.0)" fill="#C1272D" id="2" start="(309.0, 458.0)" />
27        <text font-family="Helvetica" font-size="12" id="3" rect="(319.0, 446.0, 150.0, 48.0)">Several learners can be
28scored in cross-validation
29at the same time.</text>
30        <arrow end="(331.0, 63.0)" fill="#C1272D" id="4" start="(403.0, 61.0)" />
31        <text font-family="Helvetica" font-size="12" id="5" rect="(413.0, 44.0, 150.0, 36.0)">It's always a good idea to check out the data first.</text>
32        <arrow end="(360.0, 239.0)" fill="#C1272D" id="6" start="(378.0, 294.0)" />
33        <text font-family="Helvetica" font-size="12" id="7" rect="(305.0, 302.0, 150.0, 60.0)">Cross-validation takes place here. Double click to see the performance scores.</text>
34        <arrow end="(543.0, 249.0)" fill="#C1272D" id="8" start="(557.0, 304.0)" />
35        <text font-family="Helvetica" font-size="12" id="9" rect="(510.0, 309.0, 159.0, 48.0)">Use for additional analysis of cross-validation results.</text>
36        <arrow end="(641.0, 161.0)" fill="#C1272D" id="10" start="(667.0, 113.0)" />
37        <text font-family="Helvetica" font-size="12" id="11" rect="(624.0, 51.0, 163.0, 64.0)">Select a cell in confusion matrix to obtain related data instances. Here we examine them in the spreadheet.</text>
38    </annotations>
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