lmcinnes / lmcinnes/umap

Separate distincts clouds

Open
#176 1 comment 0 reactions 0 assignees View on GitHub

Nobody has claimed this yet.

Dominant language
Python
Stars
8.3k
Forks
871
Avg merge
1d 13h
Merged PRs (30d)
5

Description

Currently, I have two distinct clounds, but they are stick together.

![selection_333](https://user-images.githubusercontent.com/24579703/49650769-5c924f00-f9fb-11e8-8913-fc8bf7dcac82.png)

![selection_332](https://user-images.githubusercontent.com/24579703/49650780-661bb700-f9fb-11e8-9bfb-01ecc7fbbd92.png)

Is there a way to separate them with UMAP? Otherwise, what could be a good alternative to separate them topologically? Is there an analytic approach which can be used here?

**UPDATE**

I am looking for an analytical approach to separate the clouds after applying umap.fit_transform(). I used different approach to get distinct clouds with t-SNE, PCA, SVM, used NN to classify the points. The problem is I always got clouds stick together. The better result though was with UMAP. Now, I am interested to force to separate the clouds once the UMAP has been applied.

![image](https://user-images.githubusercontent.com/24579703/49666879-5a45ea00-fa27-11e8-9cd9-6468c1e58c51.png)

Contributor guide

Open the contributing guide

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

The issue provides no file, test, or entry point to begin from; start by locating the UMAP transform implementation and its existing tests. Done would require a maintainer-approved analytical approach for separating the resulting clouds, together with tests or documented evidence that the approach works.

Written by the indexing model from the issue text.

Assessment

Tech stack
python
Domain
data-visualization, machine-learning
Issue type
Feature
Difficulty
5/5
Estimated time
Over a week
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
18/100

Get new issues in your inbox

A short digest of beginner-friendly GitHub issues.