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Questions tagged [visualization]

Constructing meaningful and useful graphical representations of data. (If your question is only about how to get particular software to produce a specific effect, then it is likely not on topic here.)

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18 views

Visualization decision tree [closed]

Run into problem when i visualizing decision tree here is the code: ...
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1answer
13 views

Display a subset of classes in axes in ggplot

I have the following plot, is there any way in ggplot to display just the numbers 1 to 10 instead of all of them? Numbers from 10 and after are not so important, but I need to display the ones before. ...
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0answers
14 views

SVM Cost function change to improve its computational efficiency

While listening to Andrew Ng's course of Machine Learning he said that the SVM's cost function term $\frac{\Theta^T\Theta}{2}$ is usually changed to $\frac{\Theta^TM\Theta}{2}$, where matrix $M$ ...
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1answer
14 views

Is there a way to Label/Annotate My Bubble Plot (Scatter plot with a z-axis) on matplotlib?

I would like to label my bubble plot, with the labels being INSIDE the bubbles. Something like this. Is There any way to do that? What I've tried: ...
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2answers
43 views

Using t-SNE to track progress of a word vector embedding model. Pitfalls?

I've been training a word2vec/doc2vec model on a large amount of text. I recently stumbled across the t-SNE package, and am finding it wonderful at finding hidden structure in high-dimensional data. ...
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1answer
51 views

Finding a Data pattern [closed]

I am new to this data science field. I have data of points in 3D space and each point "helps" a metric. I have the sets of points and corresponding metrics. Data might look like: ...
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1answer
25 views

Comparative Analysis of two sets of data

I have 2 sets of data which consist of marks of 60 students in a particular subject in year 1 and year 2 respectively. Year 1 : 86, 76, 87, 67, 89, 95.... so on (60 students) Year 2 : 82, 67, 99, 77,...
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1answer
74 views

What is the difference between regplot and lmplot in seaborn?

Seaborn library in python suggests to use either lmplot or regplot to visualise a regression between two variables. What is the difference between the two plots ? The result I was able to get are ...
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0answers
9 views

Spatially encoding textual data

Imagine we have a textual data that must be passed to convolutional neural network. Generally we know that for natural language processing, textual data is embedded into vector space, but in this ...
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2answers
40 views

Trying to find the correlation between inputs and output

I have tried the pandas code for trying to find out the correlation between the output and the inputs I am feeding. Here is the code: ...
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1answer
12 views

How the original data can be written in the space defined by these M principal components?

Suppose you apply PCA on the data $x_1,...,x_6$ and find that data can be fully described using M principal components $u_1,...,u_M$. How the original data can be written in the space defined by these ...
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1answer
33 views

What is the concept of error bars in barplots in seaborn library?

I am using seaborn library to perform EDA on a dataset having categorical variables. I am using barplot function and in that there are some black bars which I guess are error bars as I read in ...
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0answers
7 views

Visualising loss in weight space

Usually, all deep learning lectures talk about how using the gradient descent we move through the weight space (or feature space) to minimise the loss. During training and optimisation, however, I'm ...
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13 views

Any tool recommendation to visualize a network embedding?

I am looking for a library or tool (either in Java or Python) to visualize a network embedding. Any recommendations?
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1answer
36 views

Tools for visualisation: making a video of a sliding windows moving on the time series

I have a Neural Network (an autoencoder) that gets as the input a time-window of length M from a time series of length N, (...
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1answer
27 views

Do 3D bar charts have advantages over 2D bar charts?

I vaguely remember that there was a study / blog post which made a strong point against 3D bar charts. Do you have a source at hand which compares the two - 2D bar charts and 3D bar charts?
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1answer
194 views

Matplotlib — TypeError: 'module' object is not callable

I am new into ML. As per video tutorials when i try to execute the following lines i get an error. However the instructor get successful execution. Error is : i have google about it but didnt get ...
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0answers
10 views

What has to be considered when creating a radar chart?

I'm currently analyzing a WhatsApp chat history. One thing I'm interested in is the time when the two people communicated. I thought this is a perfect use case for a radar chart (aka spider chart, ...
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1answer
44 views

Excel Data to Venn Diagram

I don't really know if I'm posting in the right place but I hope so. I'm writing my bachelor degree, and I collected some data about fonts and language support. At the moment, all my data is stored ...
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1answer
21 views

Want suggestions on choosing open source embedded BI tool [closed]

I need some suggestions from all group members regarding the open source reporting/dash-boarding tool which fulfills below specific requirements apart from some basic BI functionalities: 1. Can be ...
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1answer
90 views

Customer Targeting for CRM Marketing Campaign [closed]

I need help or ideas to solve the below business challenge. Sample questions has been provided. A snapshot of the sample data has been attached below:
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1answer
11 views

How understand scatter like this way? [closed]

I am trying to learn some EDA skills and I get a scatter like this way: I don't see that there are some model relationships or group-related patterns between these two data. I mean what I thought was ...
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0answers
18 views

Finding Impact of IV on NPS of responses in A survey

I have a dataset like this. Where the first column is the age of usage of product of a user (in days) and second column is the response of the user to the typical NPS survey question: Using these ...
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2answers
39 views

Building predictive model with low correlated data [closed]

I have been working on a project with low features and only few entry fields ( 4 to be exact ). All the data in the dataset is barely correlated to each other. Is there some organized way or ...
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1answer
26 views

Is Loss not a good indication of performance?

Im trying to segment 3D volumes using a 3D uNet network. Ive reached a stage where I am getting very good validation loss using CrossEntropy and ...
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1answer
27 views

How to make a Power Spectral Density Plot in R

I have a time series point process representing neuron spikes. I have computed and plotted autocovariance using acf but now I need to plot the Power Spectral ...
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1answer
31 views

Does this correlation make sense?

I'm trying to work on a ML project and I have a dataset and I'm trying to see if there is a correlation between some of the features in my dataset. The dataset contains inspection notes for car parts ...
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0answers
18 views

visualization idea on a panel data (roughly speaking)

I wanted to construct a heat map on the following data: ...
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1answer
101 views

How to interpret partial dependence interaction plot for binary classification?

The plot below is an example from pdpbox library https://github.com/SauceCat/PDPbox/blob/master/tutorials/pdpbox_binary_classification.ipynb. The what does 0.900 color saturation to the right mean ...
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1answer
20 views

Visualising a stream of emotions

I have a stream of emotions (from some audio recordings) extracted by a speech emotion recogniser. My questions now are how to best display these emotions to the end users? What is the best way to ...
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1answer
26 views

Higher dimension data visualization in Matlab/Octave

I am working on sparse recovery for a classification task. I use Pine hyperspectral dataset which is a freely available dataset and this image contains 200 Dimension (Depth/channels/bands). In ...
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1answer
62 views

Twitter Retweet Network Visualization

I am trying to visualize retweet network in order to find out which users are most likely to have most influence on other users. Here is my code: ...
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1answer
99 views

How to save a Numpy array output of an autoencoder as an image [closed]

I have a 256*256*3 numpy array "SP" out of an autoencoder decoder layer which I want to save and open as an .jpg image. I used something like the following python code snippets: ...
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1answer
37 views

What's an efficient way to plot many features for EDA in python?

I'm trying to visualize data for exploratory data analysis motivated by visualizing multiple scatterplots of features simultaneously, similar to this question. But I quickly run into problems when ...
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0answers
37 views

Semantic segmentation dataset inspection

Is there any tool that can calculate the statistics of semantic segmentation dataset (and possibly the similar types of datasets ...)? So that it shows the number of classes, the total number of ...
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2answers
50 views

Differences between applying KMeans over PCA and applying PCA over KMeans

Short question: As stated in the title, I'm interested in the differences between applying KMeans over PCA-ed vectors and applying PCA over KMean-ed vectors. Long question: Let's suppose we have a ...
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2answers
46 views

Is there any tool for data visualization and manipulation?

I have a time series data set that I need to manually label them for supervised learning. What I am doing now is using excel to plot, and when I see the pattern that I want, I hover over the data on ...
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2answers
43 views

How to visualize Ensemble Models ( Random Forest) with 1000 estimators

I am working on classification problem where I need to categorize the user in buy/ non-buy category. I have around 100 + features or predictors to predict the behavior of user. I tried to implement ...
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1answer
247 views

How to visualize results/errors of multilabel classifiers?

For multiclass classification you would normally choose a confusion matrix to plot the error of predicted classes against the target classes. What is the best way to visualize errors of multilabel ...
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0answers
75 views

Beautiful output for table function in R

I work with R in the Jupyter environment. I would like to see the table output on one line. What should I do? ...
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1answer
200 views

Visualizing many one-to-many relationships

I am trying to visualize the language tags on github repository data. I have names of 16k github repositories, and all the languages associated with each one of them. Below is a chord diagram I came ...
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1answer
47 views

Orange3: Is it possible to get the total number of rows for a given column from inside 'Feature Constructor'?

I'm using the Orange3 gui and have been asked to generate basic plots where values relative to a "mean" or "Percentile Rank" are colorized. I looked in ...
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1answer
30 views

Error when box plot [closed]

Code: ...
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1answer
28 views

How to add numbers to the axes of a graph?

I am trying to make a graph of k (as in k-means) vs error, and I can't get it to show the actual number of k on the x-axis (1-15, not just the even numbers), nor any any numbers at all if I add a ...
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1answer
1k views

Display Images (url) Inside Pandas Dataframe

I would like to display images (mostly jpg and png formats) directly from their url link inside a pandas dataframe. Imagine I already have the following dataframe: ...
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2answers
32 views

plot multiple strings from a dataframe

I am trying to read and plot several files which looks like as below when I open with python using pandas read.table. The columns to plot are "dev" vs timestamp. The timestamp should be compose from ...
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1answer
244 views

What is the best way to visualize 10 Fold Cross Validation Scores?

I have trained a CNN model and I have applied 10 Fold Cross Validation because I don't have much data to train the classifier. Now I am unsure about how to visulize fold wise results. Please suggest ...
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2answers
69 views

Visualizing a large graph (10'000 nodes)

I am currently trying to find a way to visualize a graph which has 10'000 nodes, and about 20'000 edges. I was trying this javascript library, but quickly realised that this is too computationally ...
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0answers
19 views

Determining Metric for User Growth

How to define one specific metric to determine the growing users. I have a time series dataset of user engagement with the counts of content created by the user and the engagement score on a ...