Non-Negative Factorizations Module (tmg_gui)
nnmf_gui is a graphical user interface for "Text to Matrix Generator" that can be used for applying a set of non-negative factorizations to term-document matrices (TDM's) constructed from tmg_gui.
See a demonstration of nnmf_gui.
For complete up-to-date documentation visit the TMG Wiki:
| Field Name | Default | Description |
| Select Dataset | - | Select the dataset. |
| Random | ● | Initialize at random. |
| Nonnegative Double SVD (NNDSVD) | - | Initialize by NNDSVD. |
| Block NNDSVD | - | Initialize by block NNDSVD. |
| Bisecting NNDSVD | - | Initialize by bisecting NNDSVD. |
| By Clustering | - | Initialize by clustering. |
| Refine factors | - | Check to run refinement algorithm. |
| Method | - | Refinement method (default Multiplicative Update). |
| Number of iterations | - | Refine by the Multiplicative Update algorithm. |
| Display Results | ● | Display results of refinement method. |
| Euclidean k-means | ● | Check to use the euclidean k-means clustering algorithm. |
| Spherical k-means | - | Check to use the spherical k-means clustering algorithm. |
| PDDP | - | Check to use the PDDP clustering algorithm. |
| Initialize Centroids | At random | Defines the method used for the initialization of the centroid vector in the course of k-means. Possibilities are: initialize at random and supplly a variable of '.mat' file with the centroids matrix. |
| Termination Criterion | Epsilon (1) | Defines the termination criterion used in the course of k-means. Possibilities are: use an epsilon value (default 1) and stop iteration when the objective function improvement does not exceed epsilon or perform a specific number of iterations (default 10). |
| Principal Directions | 1 | Number of principal directions used in PDDP. |
| Maximum num. of PCs | - | Check if the PDDP(max-l) variant is to be applied. |
| Variant | Basic | A set of PDDP variants. Possibe values: 'Basic', 'Split with k-means', 'Optimat Split', 'Optimal Split with k-means', 'Optimal Split on Projection'. |
| MATLAB (svds) | ● | Check to use MATLAB function svds for the computation of the SVD in the course of PDDP. |
| Propack | - | Check to use PROPACK package for the computation of the SVD in the course of PDDP. |
| Number of Clusters | - | Number of clusters computed. |
| Display Results | ● | Display results or not to the command windows. |
| Store Results | ● | Check to store results. |
| Continue | - | Apply the selected operation. |
| Reset | - | Reset window to default values. |
| Exit | - | Exit window. |