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

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25 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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16 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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13 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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35 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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28 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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18 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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20 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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26 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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20 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
49 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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25 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
16 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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37 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
78 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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27 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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14 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
35 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
27 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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19 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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27 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
57 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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19 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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1answer
70 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
55 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
87 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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59 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
105 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
39 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
181 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
25 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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64 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
50 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
75 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
41 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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45 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
32 views

Abbreviation in orange's contingency table

What do the scores ARI and AMI mean in Orange's contingency table?
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1answer
126 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:...
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1answer
390 views

How do I start Orange [closed]

I installed Orange via conda install orange3 I see the package installed in Anaconda3 / pkgs directory however there is not desktop icon nor can I find Orange via ...
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1answer
79 views

How to change the threshold value in orange?

How can I change the threshold value for each classifier? In the ROC analysis curve we are allowed to remove the tick from "default threshold"
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47 views

SQL Server credential doesn't work from Orange [closed]

I am trying to have a SQL Table widget in my Orange canvas, which is connected to SQL Server. I have installed pymssql, and in the SQL Table dialog, I do get an ...
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1answer
41 views

Orange Web Services - Problems installing imblearn module for Python Script

I am trying to implement SMOTE in Orange Web Services, but having troubles with the imblearn module. Following screenshot is from Orange Python Script widget: ...
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1answer
61 views

Twitter API widget

I have created a API in Twitter. The orange widget twitter works fine if we do a search by content. But, it throws up an error if you search by author The error is: Api error(Twitter error response ...
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1answer
238 views

We are using PostgreSQL to store big data and are concerned it may crash the on-board Neural Net. Any thoughts?

We have figured out how to write Big Data to our PostgreSQL database. We would like to run this (normalized) data into the on-board Neural Network in Orange. Our lead programmer said he thought Orange ...
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119 views

How to run Orange from the source code? [closed]

I'd like to contribute to Orange. To get used to the code, I tried to run the source code directly under Windows 10, so far without success. I have numpy and scipy installed, and the source code for ...
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24 views

How do I add error bars to a plot in Orange?

I'm trying to plot my data and see if it's comparable, but for this I need error bars (to see if the difference is within the margin of error). I cannot for the life of me figure out how to do error ...

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