Changeset 10179:cf5dc2ee7eec in orange


Ignore:
Timestamp:
02/13/12 09:32:43 (2 years ago)
Author:
anze <anze.staric@…>
Branch:
default
rebase_source:
599a887dcb96db8804ea5cb0397fbd4a0098bb25
Message:

Updates to evaluation.testing documentation.

File:
1 edited

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  • docs/reference/rst/Orange.evaluation.testing.rst

    r9994 r10179  
    66================================== 
    77 
    8 This module includes functions for data sampling and splitting, and for 
    9 testing learners. It implements cross-validation, leave-one out, random 
    10 sampling and learning curves. All functions return their results in the same 
    11 format - an instance of :obj:`ExperimentResults`, described at the end of the 
    12 page, or, in case of learning curves, a list of :obj:`ExperimentResults`. This 
    13 object(s) can be passed to statistical function for model evaluation 
    14 (classification accuracy, Brier score, ROC analysis...) available in 
    15 module :obj:`Orange.evaluation.scoring`. 
     8There are many ways to test prediction models on data. Orange includes 
     9methods for cross-validation, leave-one out, random sampling and learning 
     10curves. This methods handle learning of models and prediction of new 
     11examples; they return :obj:`ExperimentResults` which can be passed to 
     12:obj:`~Orange.evaluation.scoring` functions to evaluate model. 
     13 
     14 
    1615 
    1716Your scripts will thus basically conduct experiments using methods of 
     
    2221description of :obj:`TestedExample` and :obj:`ExperimentResults` are 
    2322available at the end of this page. 
    24  
    25 .. note:: Orange has been "de-randomized". Running the same script twice 
    26     will generally give the same results, unless special care is taken to 
    27     randomize it. This is opposed to the previous versions where special 
    28     care needed to be taken to make experiments repeatable. 
    29     See argument obj:`random_generator` for the explanation. 
    3023 
    3124Example scripts in this section suppose that the data is loaded and a 
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