Classification Usage Model
A typical workflow for classification methods includes training and prediction, as explained below.
Algorithm-Specific Parameters
The parameters used by classification algorithms at each stage depend on a specific algorithm. For a list of these parameters, refer to the description of an appropriate classification algorithm.
Training Stage
At the training stage, classification algorithms accept the input described below.
Pass the
Input ID
as a parameter to the methods that provide input for your algorithm.
For more details, see Algorithms.Input ID | Input |
|---|---|
data | Pointer to the
numeric table with the training data set.
This table can be an object of any class derived from NumericTable . |
weights | Weights of the observations in the training data set.
Argument is optional, but it is required by the selected algorithms. |
labels | Pointer to the
numeric table with class labels.This table can be an object of any class derived from NumericTable except PackedSymmetricMatrix and PackedTriangularMatrix . |
At the training stage, classification algorithms calculate the result described below.
Pass the
Result ID
as a parameter to the methods that access the results of your algorithm.
For more details, see Algorithms.Result ID | Result |
|---|---|
model | Pointer to the classification model being trained. The result can only be an object of the Model class. |
Prediction Stage
At the prediction stage, classification algorithms accept the input described below.
Pass the
Input ID
as a parameter to the methods that provide input for your algorithm.
For more details, see Algorithms.Input ID | Input |
|---|---|
data | Pointer to the
numeric table with the working data set.
This table can be an object of any class derived from NumericTable . |
model | Pointer to the trained classification model. This input can only be an object of the Model class. |
At the prediction stage, classification algorithms calculate the result described below.
Pass the
Result ID
as a parameter to the methods that access the results of your algorithm.
For more details, see Algorithms.Result ID | Result |
|---|---|
prediction | Pointer to the
numeric table with classification results (class labels or confidence levels).By default, this table is an object of the HomogenNumericTable class,
but you can define it as an object of any class derived from NumericTable
except PackedSymmetricMatrix and PackedTriangularMatrix . |
probabilities | A numeric table of size
, containing probabilities of classes computed when the
computeClassProbabilities option is enabled. This result table is available for selected algorithms, see corresponding algorithm documentation for details. |
logProbabilities | A numeric table of size
, containing logarithms of classes’ probabilities computed when the computeClassLogProbabilities option is enabled.
This result table is available for selected algorithms, see corresponding algorithm documentation for details.By default, this table is an object of the HomogenNumericTable class,
but you can define it as an object of any class derived from NumericTable
except PackedSymmetricMatrix , PackedTriangularMatrix , CSRNumericTable . |