A matrix factorization method where all of the values in matrices are constrained to be non-negative so that they are easier to inspect. It is useful in data mining because it has the effect of clustering the input data.

Edits on 12 Mar 2019

Edits made to:
**Article** (+115/-129 characters)

Several NMF variants have been shown to be well-performing alternatives to clustering algorithms.

Several NMF variants have been shown to be well-performing alternatives to clustering algorithms. Clustering, or cluster analysis, is an unsupervised learning problem. Clustering algorithms aim to find partitioningsgroups of a data set such that the similarity within each partitiongroup is maximized and the similarity between different partitionsgroups is minimized.

Edits made to:
**Article** (+10/-10 characters)
**Related Topics** (+1 topics)

Several NMF variants have been shown to be well-performing alternatives to clusteringclustering algorithms.

Edits made to:
**People** (+4 cells) (+45 characters)
**Further reading** (+4 cells) (+171 characters)

Name

Role

Related Golden topics

Daniel D. Lee

Creator

H. Sebastian Seung

Creator

Title

Author

Link

Type

Learning the parts of objects by non-negative matrix factorization

Daniel D. Lee, H. Sebastian Seung

Edits on 11 Mar 2019

Edits made to:
**Article** (+759/-203 characters)

One of the common techniques used to perform matrix factorization is called gradient descent, which itself has many variations such as SGD, Momentum method, Adagrad, Adadelta, RMSprop, Adam, and others.

One of the common techniques used to perform matrix factorization is called gradient descent, which itself has many variations such as SGD, Momentum method, Adagrad, Adadelta, RMSprop, Adam, and others. Another widely used technique is singular value decomposition (SVD), which includes the Funk SVD, SVD++, Iterative SVD, Regularized SVD, and Asymmetric SVD algorithms. Funk SVD was first introduced in a 2006 blog post by Simon Funk titled *Netflix Update: Try This at Home*, in which Funk outlined a method that could be used by Netflix to recommend relevant shows and movies to its users.

Several NMF variants have been shown to be well-performing alternatives to clustering algorithms.

Clustering, or cluster analysis, is an unsupervised learning problem. Clustering algorithms aim to find partitionings of a data set such that the similarity within each partition is maximized and the similarity between different partitions is minimized.

Researchers have developed a variety of difference methods in applying NMF for clustering, including Sparse NMF, Projective NMF, Non-negative Spectral Clustering, and Cluster-NMF.

Edits made to:
**Article**

One of the common techniques used to perform matrix factorization is called gradient descent, which itself has many variations such as SGD, Momentum method, Adagrad, Adadelta, RMSprop, Adam, and others. Another widely used technique is singular value decomposition (SVD), which includes the Funk SVD, SVD++, Iterative SVD, Regularized SVD, and Asymmetric SVD algorithms. Funk SVD was first introduced in a 2006 blog post by Simon Funk titled *Netflix Update: Try This at Home*, in which Funk outlined a method that could be used by Netflix to recommend relevant shows and movies to its users.

Edits made to:
**Article** (+590/-201 characters)
**Further reading** (+4 cells) (+91 characters)

The technique used to actually perform the matrix factorization is called gradient descent, which itself has many variations such as SGD, Momentum method, Adagrad, Adadelta, RMSprop, Adam, and others.

One of the common techniques used to perform matrix factorization is called gradient descent, which itself has many variations such as SGD, Momentum method, Adagrad, Adadelta, RMSprop, Adam, and others. Another widely used technique is singular value decomposition (SVD), which includes the Funk SVD, SVD++, Iterative SVD, Regularized SVD, and Asymmetric SVD algorithms. Funk SVD was first introduced in a 2006 blog post by Simon Funk titled *Netflix Update: Try This at Home*, in which Funk outlined a method that could be used by Netflix to recommend relevant shows and movies to its users.

Title

Author

Link

Type

Edits made to:
**Description** (+84 characters)

A matrix factorization method where all of the values in matrices are constrained to be non-negative so that they are easier to inspect. It is useful in data mining because it has the effect of clustering the input data.

Edits on 10 Mar 2019

Edits made to:

A matrix factorization method where all of the values in matrices are constrained to be non-negative so that they are easier to inspect. It is useful in data mining because it has the effect of clustering the input data.

Edits made to:
**Description** (+64/-11 characters)
**Article** (+1 images) (+1157/-25 characters)
**Related Topics** (+1 topics)

A matrix factorization method where all of the values in matrices are constrained to be nonnegativenon-negative so that they are easier to inspect.

NonnegativeNon-negative Matrix Factorization (NMF or NNMF) is a matrix factorization method where theall of values in matrices are constrained to be nonnegativenon-negative so that they are easier to inspect.

Matrix factorization is also sometimes referred to as matrix decomposition because it is the process of taking one matrix (*V)* and finding two smaller matrices (*W *and* H) *such that their product approximates the original matrix.

When NMF is used in machine learning, *W *is the *weights *matrix and *H *is the *features *matrix. This means that *W *has a column for each feature and a row for each row in the original matrix, while *H *has a row for each feature and a column for each column in the original matrix. The dot product of *W *and *H *then produces the sum of the latent features by the weights for each element in the original matrix.

The utility of NMF in machine learning is that it can be used to predict values that were zero values in the original matrix. NMF is closely related to both supervised learning and unsupervised learning methodologies, particularly the latter.

Edits on 9 Mar 2019

Edits made to:
**Description** (+83 characters)
**Article** (+125 characters)
**Further reading** (+7 cells) (+317 characters)
**Documentaries, videos and podcasts** (+3 cells) (+102 characters)
**Categories** (+2 topics)
**Related Topics** (+5 topics)

A matrix factorization method where the matrices are constrained to be nonnegative.

Nonnegative Matrix Factorization (NMF) is a matrix factorization method where the matrices are constrained to be nonnegative.

Title

Author

Link

Type

A Practical Introduction to NMF (nonnegative matrix factorization)

Web

Beginners Guide to Non-Negative Matrix Factorization

Benjamin Bengfort

Web

Title

Date

Link

10701: Non-Negative Matrix Factorization

December 11th, 2013

Edits on 1 Jan 2017

Edits made to:
**Article**

No more activity to show.