Questions tagged [orange]

Use for questions about Orange, the free, open-source, component-based, data mining and machine learning software suite.

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8 views

Can data be CLR transformed in Orange?

Good day, I would like to perform a CLR transformation of selected continuous data in Orange, is this possible? I don't see a CLR or log ratio transformation widget anywhere. Would I have to write my ...
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9 views

What is the default method for Orange to deal with missing values in random forest classification?

Good day, I have built a random forest classification model in Orange, but some of my input data (all continuous) are missing. Up to 30% of the data for some variables are missing. I understand the ...
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19 views

Setting Up Training Data to Perform Image classification

I want to use Orange for an Image Classification project I am working on. I have a training image set and separate .csv with columns corresponding to the image (by name) and classifier. Wondering ...
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1answer
70 views

What is Orange all about?

I read a lot about Orange here in the forum. I know that it is a Software developed at the University of Ljubljana. I guess it has some kind of GUI which makes it a „cheap and easy“ way to implement ...
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14 views

Latest version of orange crashing

Not sure why, but Orange is crashing on me quite often. I only have 100K instances and 127 features. I've saved the dataset as a PKL on my C solid state C drive and trimmed it down using Orange to ...
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20 views

Import data from URL [closed]

I put a dropbox link to the URL box in the File widget and the data got imported perfectly. I saved the workflow that I would like to share with my team. But when I reopen the workflow, the URL link ...
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8 views

tsm_system_time extension not available on Azure Postgresql

The tsm_system_time extension is not available on Azure Postgresql. Anyway to use Orange without this extension on the server?
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16 views

How does orange encode categorical values for a neural network? What function does it do and how?

How does orange encode categorical values for a neural network? What function does it do and how? I can not find it in the code.
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38 views

Orange3 / python script / scipy interpn

I tried to create a learner using the Orange canvas script from the Python script widget, but I have not been able to find an effective example. What I would like to do is: 1) Create a learner based ...
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20 views

Orange widget with OpenCV setMouseCallback

I am designing an Orange Widget for facial recognition. I would like to draw a rectangle around faces captured in video by setting mouse events with ...
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21 views

Importing Orange Pickled Models in Jupyter

I am doing some testing with geoscience data and a few supervised methods in Orange. I have been saving these models as pickle models, but I would like to import them in my Jupyter notebook. How can I ...
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36 views

Regarding the number of iterations functionality

I have a query regarding the number of iterations functionality in Orange, which is available with several widgets. For instance, in the neural networks widget, the maximum number of iterations is ...
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31 views

Manually changing coefficients of a model

Is there a way to manually change parameters of a model in Orange 3? I have a dataset and trained a logistic regression model on it. Now, I can alter the coefficients (beta values) of the logistic ...
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32 views

Orange Biolab Pivot Table widget - missing

I downloaded most recent version of Orange. I can not find the Pivot Table widget anywhere. When right clicking on the search menu shown, it does not appear anything when writing Pivot Table phrase. ...
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25 views

How to use a Orange Machine Learning Model without Installing all of Orange

I created a model in Orange and now I would like to run the model in a piece of code inside a docker container. The problem is that I need to import and install Orange to run the saved model. To ...
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21 views

Can Orange read an excel file on Sharepoint or Onedrive?

I would like to share my Orange file through a team SharePoint site, including its linked (excel) datafile. Is this possible?
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31 views

Text Mining with Pubmed Widget Orange

When I was running the text mining I did not have an issue for 57 different searches. I was able to retrieve all of the records regardless of how many there were. Until these 2 errors popped up. I ...
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26 views

Term Co-occurence Matrix

I am doing text mining with Orange. How can I use my bag of words to create a term co-occurrence matrix? I am hoping to use this to plot some cool bigram and semantic networks.
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1answer
59 views

Orange release notes

What is the best way to understand changes made in new releases? For example, Orange 3.21 came out recently and I’m eager to understand any prominent fixes or modified features.
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27 views

coefficients from decision regression tree

I have a data on which I apply decision regression tree since it gives better numerical values as predicting house prices. I have almost 45 features in which price is the target value. With linear ...
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1answer
19 views

Comparing files (text sources) in Orange

What is the best method to compare text files in Orange? How do I find the difference or similar between two texts and relations between main nodes?
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47 views

Why is the random forest confusion matrix for my test dataset 100% accuracy, when training data matrix isn't?

I am using the software Orange to undertake a random forest classification of geo-chemical data. I am trying to classify points as 0 or 1 based on whether it is a mineral occurrence or not. My ...
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1answer
87 views

Predicting house price using linear regression

I'm trying to predict a house price using linear regression method. I gather the real data from a real estate website. I have some features and two numerical value in which the price is the target ...
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30 views

Use sentiment analysis on word level (aspect level)

I am trying to use Orange 3.20 Text Mining nodes to classify sentiments using a lexicon approach (either using the Method from Liu Hu or Vader). After selecting the columns, I can see the documents ...
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16 views

Select rows using Biolabs Orange Textable or Text Mining?

I have very large tables of data that include a 'comments' column, which I am working with in Biolabs Orange. I need to select only rows that contain a list of keywords (e.g., selected using the word ...
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1answer
45 views

How to create corpus file?

I have text data in .xlsx or .txt files. How do I convert them to a corpus file (.tab)? I would like to use the corpus file with Orange's text add-on.
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1answer
41 views

Does orange transfrom categorial variables into dummy variables when using hierarchical clustering?

I am using Orange to cluster a large amount of data consisting of three attributes. Each attribute only contains categorical unordered variables. My question is does Orange transform categorical ...
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19 views

Orange 3 - How can a String feature behave as a coefficient?

I'm studying machine learning with data. I have a table including features and a target variable which is the price as in the following. When I want to figure out the coefficients to obtain linear ...
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27 views

Modify value of data in Orange

I am new to Orange and it seems very useful to do some EDA. One question I have is can we use a widget to modify some values in the dataset? For example, several numerical columns have some values of ...
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28 views

Unable to Print or Save Predicted Results in Orange?

I have applied some models (Logistic, Tree, SVM, Neural Network, etc) in order to predict my results. However, when I printed or saved my predicted results, I was unable to print the Complete ...
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2answers
73 views

Unbalanced target variable in Orange, how do I balance it?

So I want to perform a predictive model to predict churn. I have 2 datasets, one with churn and the other without (so I can later perform predictions). The issue is that I think my Confusion matrix ...
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20 views

Sorting in Heatmap in orange

I am new in this community and hope to find some hints. At the moment I am a little bit confused by orange. In the documentation it is shown, that you can sort within the heat map rows or columns, but ...
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21 views

How to analyze sets within Orange

Hi coming up with similar question like Q49352 - Clustering with sets as values . I am looking for the right way to work with sets in Orange. My set has a list of workflow steps from a workflow ...
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86 views

Why does a confusion matrix in Orange not show results?

I ran a neural network on a data set and when I checked the confusion matrix I got nothing but a message that says: Confusion matrix cannot show regression results.
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1answer
64 views

Connect Orange 3.20 to postgresql database

I installed orange 3.20 on windows 7. It works so far, the problem is connecting it to a server based Postgres database. While the connection can be made in the moment, when you try to load a table ...
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1answer
112 views

Launch Orange3 core dump for any >3.17

Updated to 3.19 using Anaconda navigator, from CLI I receive these messages ...
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70 views

Create new column in Orange using Python Scripting Widget

This is a fairly basic question. How do you create a new column in Orange - based upon an existing column? For example: NewCol = 2 * ExistingColumn or ...
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1answer
152 views

Partial least squares (PLS)

I am relatively new to Orange, trying to utilise it for linear regression, in particular partial least squares (PLS). My statistics knowledge is in the moment not good enough to know whether I could ...
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1answer
53 views

How to calculate a weighted Hierarchical clustering in Orange

I am doing my first cluster analysis with Orange (which I recently discovered and looks promising for this iterative and interactive process). Apparently, there are several methods of creating ...
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0answers
276 views

What are the differences between Glueviz and Orange that come installed with Anaconda and how do they compare on performance and workflows?

I've been using Anaconda for quite a while now and these two libraries glue and Orange have sparked interest lately. I've ...
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1answer
30 views

Orange Import and process spectra time dependent/kinetics

I would like to import FTIR spectra that have been collected over time then use Orange to preprocess these as a group. I currently have the spectra as individual SPC or CSV files. How do I import the ...
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66 views

How do I get Text Mining on Orange version 3.18 [closed]

I have downloaded version 3.18 but there are no Data options for Text Mining (i.e. Corpus Viewer, Word count). Is there a later version of Orange I should download or is there a specific Add On I ...
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2answers
53 views

Clustering with sets as values

I have gathered a large amount of qualitative data and am now looking to cluster it so as to make sense of it. For this, I am using Biolab's Orange. In my data, specific values may co-occur in a ...
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0answers
83 views

tsne plot not showing all the labels?

My data has 13 labels in total. But in tsne plot, the figure just displays 10 labels with the other 2 labels as "Other" in the same color. How can I set the plot to show all of the labels? Thanks.
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21 views

Automatic chart axis grid

All the data I work with in Orange are on a 1 - 10 scale, but whenever I create charts and select 10 bins it always creates a scale as seen in the attached image. Is there a way to ensure that it ...
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1answer
44 views

How to filter out numbers from text documents

I have several text files that have numbers in them. It would be very difficult to filter out all the numbers by creating a Stop Word txt file with every number from 1 to 2010, plus very inefficient ...
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54 views

Orange - Data does not have the same target predictors Error

Hi Data Science Community, We are getting an error when importing new data. The error says "Data does not have the same target predictors". Why does this error ...
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0answers
24 views

Bioinformatics add-on [closed]

I would like to ask you why there are no Volcano-plot or MA-plot widgets in bioinformatics add-on already? As I can see it in the youtube video tutorial (two years ago, version 3.3). In the latest ...
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1answer
37 views

Abbreviation in orange's contingency table

What do the scores ARI and AMI mean in Orange's contingency table?
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2answers
151 views

Orange Error when installing Network Add On

Command failed: python python -m pip install Orange3-Network exited with non zero status Environment Windows 10 Python 3.7 Orange 3.17 Detail Log Data Collecting Orange3-Network Using cached https:...