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NonnegativeMatrixFactorization Class |
Nonnegative Matrix Factorization.
Inheritance HierarchySystemObject
Accord.Math.DecompositionsNonnegativeMatrixFactorization
Accord.Math.DecompositionsNonnegativeMatrixFactorization
Namespace: Accord.Math.Decompositions
Assembly: Accord.Math (in Accord.Math.dll) Version: 3.8.0
SyntaxThe NonnegativeMatrixFactorization type exposes the following members.
Constructors| Name | Description | |
|---|---|---|
 | NonnegativeMatrixFactorization(Double, Int32) |
Initializes a new instance of the NMF algorithm
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| NonnegativeMatrixFactorization(Double, Int32, Int32) |
Initializes a new instance of the NMF algorithm
|
Properties| Name | Description | |
|---|---|---|
 | LeftNonnegativeFactors |
Gets the nonnegative factor matrix W.
|
| RightNonnegativeFactors |
Gets the nonnegative factor matrix H.
|
Methods| Name | Description | |
|---|---|---|
| Equals | Determines whether the specified object is equal to the current object. (Inherited from Object.) |
 | Finalize | Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection. (Inherited from Object.) |
| GetHashCode | Serves as the default hash function. (Inherited from Object.) |
| GetType | Gets the Type of the current instance. (Inherited from Object.) |
| MemberwiseClone | Creates a shallow copy of the current Object. (Inherited from Object.) |
| ToString | Returns a string that represents the current object. (Inherited from Object.) |
Extension Methods| Name | Description | |
|---|---|---|
 | HasMethod |
Checks whether an object implements a method with the given name.
(Defined by ExtensionMethods.) |
| IsEqual |
Compares two objects for equality, performing an elementwise
comparison if the elements are vectors or matrices.
(Defined by Matrix.) |
| To(Type) | Overloaded.
Converts an object into another type, irrespective of whether
the conversion can be done at compile time or not. This can be
used to convert generic types to numeric types during runtime.
(Defined by ExtensionMethods.) |
| ToT | Overloaded.
Converts an object into another type, irrespective of whether
the conversion can be done at compile time or not. This can be
used to convert generic types to numeric types during runtime.
(Defined by ExtensionMethods.) |
RemarksNon-negative matrix factorization (NMF) is a group of algorithms in multivariate analysis and linear algebra where a matrix X is factorized into (usually) two matrices, W and H. The non-negative factorization enforces the constraint that the factors W and H must be non-negative, i.e., all elements must be equal to or greater than zero. The factorization is not unique.
References:
- http://en.wikipedia.org/wiki/Non-negative_matrix_factorization
- Lee, D., Seung, H., 1999. Learning the Parts of Objects by Non-Negative Matrix Factorization. Nature 401, 788–791.
- Michael W. Berry, et al. (June 2006). Algorithms and Applications for Approximate Nonnegative Matrix Factorization.
See Also