%iKnow.Classification.Methods.VectorSpace
abstract class %iKnow.Classification.Methods.VectorSpace extends %iKnow.Classification.Methods.Base
This Builder Method implementation generates category term weights as a vector per category that
exists in the same vector space as the document term vector. The similarity between the
document vector and each of the category vectors can then be calculated using euclidean distance
or cosine similarity (angle). Alternatively, these weights can be used for a linear regression
formula, calculating a score rather than a similarity/distance.
A combination of global term weights (across the corpus), local term weights (within each
category) and normalization (per category) is used to calculate these category vectors.
Property Inventory
Method Inventory
Copy link to this section Properties
Copy link to this section
property CategoryGlobalTermWeights as %String (VALUELIST = ",none,IDF") [ InitialExpression = "IDF" ];
The corpus-wide relevancy factor to take into account when calculating term weights
Property methods: CategoryGlobalTermWeightsDisplayToLogical(), CategoryGlobalTermWeightsGet(), CategoryGlobalTermWeightsIsValid(), CategoryGlobalTermWeightsLogicalToDisplay(), CategoryGlobalTermWeightsLogicalToOdbc(), CategoryGlobalTermWeightsNormalize(), CategoryGlobalTermWeightsSet()
Copy link to this section
property CategoryLocalTermMetric as %String (VALUELIST = ",frequency,spread") [ InitialExpression = "spread" ];
The metric to use for calculating the local term weights
Property methods: CategoryLocalTermMetricDisplayToLogical(), CategoryLocalTermMetricGet(), CategoryLocalTermMetricIsValid(), CategoryLocalTermMetricLogicalToDisplay(), CategoryLocalTermMetricLogicalToOdbc(), CategoryLocalTermMetricNormalize(), CategoryLocalTermMetricSet()
Copy link to this section
property CategoryLocalTermWeights as %String (VALUELIST = ",binary,linear,logarithmic") [ InitialExpression = "linear" ];
The per-category term weight factor
Property methods: CategoryLocalTermWeightsDisplayToLogical(), CategoryLocalTermWeightsGet(), CategoryLocalTermWeightsIsValid(), CategoryLocalTermWeightsLogicalToDisplay(), CategoryLocalTermWeightsLogicalToOdbc(), CategoryLocalTermWeightsNormalize(), CategoryLocalTermWeightsSet()
Copy link to this section
property CategoryNormalization as %String (VALUELIST = ",none,cosine") [ InitialExpression = "none" ];
Whether and how to normalize the category vectors
Property methods: CategoryNormalizationDisplayToLogical(), CategoryNormalizationGet(), CategoryNormalizationIsValid(), CategoryNormalizationLogicalToDisplay(), CategoryNormalizationLogicalToOdbc(), CategoryNormalizationNormalize(), CategoryNormalizationSet()
Copy link to this section
property CustomTermWeights [ MultiDimensional ];
Property methods: CustomTermWeightsDisplayToLogical(), CustomTermWeightsGet(), CustomTermWeightsIsValid(), CustomTermWeightsLogicalToDisplay(), CustomTermWeightsLogicalToOdbc(), CustomTermWeightsNormalize(), CustomTermWeightsSet()
Copy link to this section Methods
Copy link to this section
method %OnRemoveTerm(pIndex As %Integer ) as %Status
Callback invoked whenever an entire term at an index has been removed
Sets a custom weight factor for the term at pIndex in pCategory .
Copy link to this section
method %SetCustomWeights(pIndex As %Integer , ByRef pCustomWeights) as %Status
Copy link to this section Inherited Members
Inherited Properties
Inherited Methods
Copy link to this section Subclasses