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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3
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1answer
7k 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
493 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. ...
2
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1answer
60 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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0answers
3k views

Monthly trend with fb prophet-Interpreting the graph

I have monthly data with month/year in one column and price on another. I would like to get a yearly trend with fb prophet library in python (how to use monthly data with the library is explained at ...
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1answer
52 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
5k 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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2answers
484 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
22 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
1k 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 ...
2
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1answer
178 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
73 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?
2
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1answer
4k 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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1answer
134 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, ...
2
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1answer
338 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 ...
0
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1answer
35 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 ...
1
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1answer
110 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:
0
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1answer
19 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 ...
0
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2answers
77 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 ...
1
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1answer
59 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 ...
1
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1answer
146 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 ...
0
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1answer
45 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
24 views

visualization idea on a panel data (roughly speaking)

I wanted to construct a heat map on the following data: ...
0
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1answer
2k 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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2answers
42 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 ...
0
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1answer
65 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 ...
2
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1answer
496 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: ...
1
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1answer
261 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: ...
2
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1answer
128 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 ...
1
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0answers
64 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 ...
1
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2answers
96 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 ...
1
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3answers
115 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 ...
1
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2answers
344 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 ...
3
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2answers
1k 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 ...
4
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1answer
918 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 ...
0
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1answer
186 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
250 views

Error when box plot [closed]

Code: ...
2
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1answer
30 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 ...
5
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2answers
8k 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: ...
1
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2answers
149 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 ...
1
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1answer
1k 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 ...
0
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2answers
163 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 ...
19
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9answers
79k views

GraphViz not working when imported inside PydotPlus (`GraphViz's executables not found`)

I've been trying to make these packages work for quite some time now but with no success. Basically the error is: GraphViz's Executables not found EDIT: I had ...
-1
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2answers
125 views

How to plot High Dimensional supervised K-means on a 2D plot chart

I'm Having a ML problem where my data set contains 80 features labelled into 3 groups (0, 1, -1). I want to plot the data on a 2D surface to see how "close" (similar) data with ...
2
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1answer
254 views

What kind of plot will be helpful for total count group data ( data grouped by month and year )?

I have a group data frame like this : ...
1
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0answers
2k views

How to plot a heatmap-like plot for categorical features?

I would greatly appreciate let me know how to plot a heatmap-like plot for categorical features? In fact, based on this post, the association between categorical ...
5
votes
1answer
951 views

What does it mean by “t-SNE retains the structure of the data”?

I was learning about t-SNE when I was told that t-SNE retains the structure of the data in the embeddings. What exactly does this mean ? How does the algorithm achieve this ? So far I have ...
1
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0answers
38 views

What are the best free reporting tools?

What are the best free Business Intelligence (Reporting) tools, that allows live updates on the reports and also sharing them to other users? Actually now I’m using the community edition of Pentaho ...
0
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1answer
282 views

kde plot for interpreting the correlation

i have created some new features for my model. I found people use kde plot to find out the correlation between the created feature and the target variable, but I am not really sure how to find the ...
6
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3answers
182 views

Git for Deep Learning - what are the best tools for versioning/tracking machine learning experiments?

I'm looking for a tool to track the results of several experiments/iterations in machine learning. Training a model can take days/weeks, so it's essential to track its performance and be able to ...
1
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3answers
212 views

What is the best way to visualize the relationship two categorical variables

I am currently working on an ambulance dataset and one of my tasks is to find when a patient was misdiagnosed by the call dispatcher. I have two codes; a dispatch code(what the dispatcher believes is ...

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