luckysama / gmm2d

GMM2D

This repo contains the 2D implementation of Hierarchical Gaussian Mixture Model (HGMM) (see paper).

Requirements

Visual Studio 2019 Community and .net 4.7.2

Implementation Details

We rigorously followed the implementation details in the paper using hard partition and non-parallel construction. The development process is two-fold: we started with a flat, one level implementation, then we added a hierarchical architecture that recursively generates predictions as a multi-level gaussian tree. Following topics are covered in wiki:

• Initialization
• Flat GMM
• HGMM
• Functionalities
• Future Improvements

DEMO Usage

To better demonstrate the HGMM algorithm, we created a GUI for inputting parameters and visualizing the HGMM fit at each level of the hierarchy. Following topics are covered in wiki:

• Status Label
• Configuration Settings
• Menu
• Common Application Workflow
• Common Errors

gmm2d's Issues

Draw point bug

1. DEMO crashes when I try to fit a different number of gaussian with different levels:

'GMMDemo.exe' (CLR v4.0.30319: GMMDemo.exe): Loaded 'C:\Windows\Microsoft.Net\assembly\GAC_MSIL\mscorlib.resources\v4.0_4.0.0.0_zh-Hans_b77a5c561934e089\mscorlib.resources.dll'. Module was built without symbols.
Exception thrown: 'System.ArgumentOutOfRangeException' in mscorlib.dll
An unhandled exception of type 'System.ArgumentOutOfRangeException' occurred in mscorlib.dll
Index out of range

2. When I try to refit GMMs with the same setting, the points' color doesn't change even if it's a different prediction.

3. Wording issue: "level" instead of "layer" and change "data points" to "menu" on the menu bar