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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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How can I statistically show that a subset of data is biased when grouped by an identifier column?

I have 6 subsets of training data, shown in the plots below. The x and y axes are two out of 4 total features of my training data and each subplot is colored by the response variable. I know that the ...
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2answers
35 views

Building predictive model with low correlated data [on hold]

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
23 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
16 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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5 views

Learning PyOpenCL and PyCuda for parallel processing

Hello data scientists, I'm trying to learn OpenCL and CUDA, especially Python + OpenCL/CUDA, and how to write some decent beginner programs. I've done vector add, and basics like that. There seems ...
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0answers
6 views

Are 3D visualisations of data useful at higher dimensions?

In a machine learning course, a lot of things are explained using 3-dimensional data i.e. using examples with 3 features to allow for it to be visualised. (An example would be multivariate gaussian ...
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16 views

How do I find frequency of Authors and plot this using Python? [migrated]

Here ABC news is observed 5 times but the column Times reflects it as 1 for each row. ...
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1answer
29 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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16 views

Is there anything like an GUI/IDE for data science - automatically generating graphs and statistics etc?

In software development, IDE's (interactive development environments) help programmers by automatically generating a lot of useful stuff while debugging - variable values, call stacks, call graphs, ...
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15 views

visualization idea on a panel data (roughly speaking)

I wanted to construct a heat map on the following data: ...
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0answers
4 views

Writing slice by slice to a new .nii file in Python

I am using python 2.7. I am writing code that reads from an initial nii file, modifies each slice of it, and then creates a new nii file and writes to it slice by slice. My main issues are I do not ...
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1answer
28 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
13 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
16 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
31 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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0answers
6 views

Is there an equivalent library to “pydotplus” for Java?

I am looking for a way to visualize the resulting decision tree for a Java implementation of the Id3 algorithm. I stumbled upon this article which refers to how to visualize decision trees using ...
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1answer
57 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
18 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
35 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
46 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
43 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
34 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
141 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
59 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
148 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
40 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
25 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
632 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
30 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
114 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
61 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 ...
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0answers
18 views

Visualizing correlation with large number of features

Often, visualization is touted as a prerequisite to model building, with the purpose of identifying features which are correlated with each other (think NxN correlation grid graph). The correlated ...
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0answers
12 views

Visualize strengths and weaknesses of a sample

Let's say I'm trying to predict an apartment price. So, I have a lot of labeled data, where on each apartment I have features that could affect the price like: city street floor year built ...
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2answers
40 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 ...
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1answer
28 views
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14 views

plot and measure uncommon part of kdeplot

As you can see this code generate that picture: ...
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248 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 ...
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1answer
78 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 ...
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0answers
17 views

Data Visualization Plotly.js renders same image when saved to html from jupyter notebook

I have displayed two different Plotly images (bar charts) in Jupyter notebook using Plotly API. However, when I save the notebook to html both the bar chart displays as the same image. For e.g. I have ...
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0answers
25 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 ...
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1answer
35 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 ...
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0answers
9 views

How to display the architecture of a neural network created using Tf.estimator?

I have created a neural network using tensorflow's estimator API: ...
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1answer
55 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 ...
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3answers
72 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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0answers
119 views

good visualization with topic modeling

I am seeking a good visualization approach in python for topic modeling. I have following results: ...
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0answers
10 views

Partial dependence plot vs prediction of an averaged row

I have been trying to predict property prices and I want to produce a lat, long partial dependence plot to visualize how much the location of a property affect the price prediction. The formal way of ...
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0answers
17 views

Most computationally efficient way to plot ~10000 points with non-overlapping labels

I've been trying to plot 10000 points with labels in pyplot. The issue is using pyplot alone results in a lots of overlapping labels. The most common solution is a python package called adjustText , ...
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0answers
45 views

Can Google really bring back billions of results in a blink of an eye (almost) [closed]

I was always fascinated by Google's search ability, a great achievement by Google and other search engine providers also, but more so a collective human talent and ability that makes me appreciate our ...