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Questions tagged [som]

A self-organizing map (SOM) is a type of artificial neural network that is trained using unsupervised learning to produce a map reprensenting the input space of the training samples.

A self-organizing map (SOM) is a type of artificial neural network that is trained using unsupervised learning to produce a map representing the input space of the training samples. Also, some supervised and semi-supervised SOMs exist.

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Reusing code vectors/ prototypes in SOMBrero

trainSOM() takes proto0 parameter as input. Can prototype from already trained SOM be passed while training new data? Trying to reuse the code vector/prototype. I am trying below code : Brero1.som <- trainSOM(x.data = DATA, nb.save=2, …
Sneha
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How to choose appropriate number of grid for Kohonen's SOM?

I wonder how to choose the number of grids in Kohonen SOM. Also, what will happen when the number of grids increases?
user10386405
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Image Browsing using Kohonen's SOM

I am trying to create a visual browsing application for millions of images using Self-Organizing maps(SOM). Does anyone know of the existing image browsing systems that use Self Organizing maps(SOM) at the backend. I know that PicSOM uses SOMs. I…
Vinayak Agarwal
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How to plot cluster/node number on a Self Organizing Map

I'm a neophyte of data analysis with R and I'm analyzing RNAseq data using Self Organizing Maps and the Kohonen package to cluster genes based on trends of expression. I'm quite satisfied with the results of the analysis, since some target genes I'm…
Elio
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Plotting the Self-Organizing Map for unlabeled data

I`m trying to plot the SOM that I performed on unlabeled data that consists of 25 columns where each column represents the power consumption of a specific house during 2 years. the code after pre-processing the data is here: import…
Aghyad Skaif
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AttributeError: 'LineCollection' object has no attribute 'do_3d_projection'

Given a 3D data ,I want to visualise a grid SOM graph while the data is shown on 3D plane but I get the following error: AttributeError: 'LineCollection' object has no attribute 'do_3d_projection' and just a white screen will open up without any…
FFXX
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What do I actually Do with the winning neuron of a Self Organizing Map?

I've reviewed weeks worth of material and everyone stops at identifying the winning neuron and plotting the SOM. However, how do I actually use this output?
PythNoob
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Neural Neworks SOM tutorial

Can anyone recommend me some good tutorial regarding SOM? I googled up some, but I'm not very satisfied with them. Thanks, proper
prper
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how we can assign labels to data using self organizing map clustering? (minisom package) python

I am using minisom package for doing som clustering. After train_batch() how can i use trained model to assign cluster number to data points?
shantanu pathak
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How to get the number of cluster on the SOM plot, in each of the node?

I want to understand to which node my wine is connected after getting a som plot. That's why firstly we need to get data.frame with the name of wine and the number of cluster that wines belongs to. And next step would be to see the number of the…
Maksym Moroz
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Any example/idea of how to plot the U-MATRIX using python (working on SOM)?

Working on SOM implementation using Python ? I want to know how to generate the u-matrix
Vipulkumar Yadav
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How to label data in SOM using SOMPY library?

I'm currently working on a project using machine learning to determine whether a network flow is a botnet or benign flow. Of course in the process, I've been using different methods of data analysis, including visualization through self-organizing…
Synchrypha
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change color of SOM patch faces and text in MATLAB

I'm graphing a 20 x 20 SOM using the plotsomhits() function. A plot is automatically generated with white text (the number of input vectors in that neuron), overlaid on a blue patch (where the size of the patch corresponds to the number of…
Jade131621
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SOM kmean optimization ValueError: all the input arrays must have same number of dimensions

I am trying to merge kmeans into SOM finding the best match unit. During clustering points to return the numbers of clusters for each point I encounter this error "ValueError: all the input arrays must have same number of dimensions" in line…
Appiah Kubi
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SOM map - kohonen package - numerical result

I try SOM map analyze with package Kohonen. I used this tutorial : https://www.shanelynn.ie/self-organising-maps-for-customer-segmentation-using-r/ . This is my code : require(kohonen) data = matrix( c(6, 6, 80, 280, 404, 0, 158,…
caroline
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