# Questions tagged [clustering]

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### Find clusters with threshold for number of members

I need to find clusterization of some daily weather data, and the number of days in any cluster should be more than some threshold (e.g. 30). So if some cluster has less members, it has to be merged ...
905 views

### Minimize distance between curves

I have a dataset with values of multiple curves. An example plot is shown below. I want to shift the curves (up/down) so that all curves overlap. This would mean the data points in each curve is ...
46 views

### Find tuples of points from multiple sets

Given n sets of points in general position in dimension 2 (n typically small, 2-6), can one find tuples of points, one from each of the sets, which are close in some sense (the closest, mutual ...
399 views

### Clustering with points lying along different 3D planes

I have a bunch of data points in 3D that lie along a few planes. What would be the best approaches to estimate the normals of these planes? Edit: There are roughly equal number of points lying along ...
1 vote
55 views

### Binary data clustering by Matrix factorization [closed]

I have read an article talking about binary clustering using Matrix factorization(see attached), but i would like to understand some optimization concepts: Is it reasonable to use a Frobenius norm in ...
196 views

### How to store a TB size array in C++ on a cluster

I want to do a huge simulation that requires ~ 1 TB of data to describe a bunch of interacting particles (each has different interactions). Is it possible to store this data in an array in C++, so ...
58 views

### Spectral Clustering by Andrew Ng paper: theorem proof question

I recently read the paper "On Spectral Clustering: Analysis and an Algorithm" by Ng et al. Much of the paper centers on Theorem 2 and equation 8. To me, it appears there is no given or referenced ...
1 vote