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Questions tagged [orange]

Orange is a free and open-source component-based data mining and machine learning software suite, featuring friendly yet powerful and flexible visual programming front-end for explorative data analysis and visualization. It includes a comprehensive set of components for data preprocessing, feature scoring and filtering, modeling, model evaluation, and various exploration techniques.

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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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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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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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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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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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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
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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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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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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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Unable to Print or Save Predicted Results in Orange?

Well, I have applied some MOdels (Logistic, Tree, SVM, Neural Network, etc) in order to predict my results but when I was Printing or saving my Predicted results, I was unable to print the Complete ...
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2answers
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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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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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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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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
38 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
56 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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39 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
57 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
33 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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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
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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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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
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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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55 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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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
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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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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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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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Abbreviation in orange's contingency table

What do the scores ARI and AMI mean in Orange's contingency table?
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99 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
275 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
59 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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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
35 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
54 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
181 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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108 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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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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Is it possible to get the mean coefficent of regression after “Test & Score” in Orange using cross-validation?

The cross-validation devides the data into n folds and measures the accuracy n times therefore. The displayed RMSE in the Test & Score tool is a mean of all n runs, I think. But is it possible to ...
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1answer
50 views

Does Orange scale the data automatically for the linear regression with Ridge regularization

I'm using the linear regression tool with the Ridge regularization. To use the Ridge regularization, I have to scale the data first. Does Orange scale the data automatically? I can't find any ...
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107 views

How to create a for-like loop in Orange3

This question has been asked before here but never received an answer. I'm planning to write a bunch of components that do some processing on single images. However, I have many such images and would ...
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2answers
793 views

Orange Error - Installing Text Add On

I am trying to install the Text add-on for Orange, and I am getting the following error on my Macbook. What's interesting is ...
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1answer
32 views

How do I change the colours on scatter plots? [closed]

Probably an obvious one, but I just cannot figure it out. I know there's a drop down menu on the left that allows you to decide what to colour, but I cannot seem to find a way to change what colour ...
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Using orange3 on a remote server or in the cloud [closed]

My question there is a way to run the orange, not on a local computer, but on a remote server, even in the cloud? My notebook has only 8GB memory and limited number of CPU core, which is insufficient ...
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1answer
64 views

Orange3 Image Classification

Is the attached workflow correct in case of training and testing with different data sets? Is the attached workflow considered "transfer learning" since my images are not related to the images that ...
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1answer
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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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2answers
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Classifying Data in Orange: What's the difference between 'Features', 'Target Variables', and 'Meta Attributes'

I've been looking for a more visual way to calculate statics on my spectroscopy data. Python's Orange Canvas seems like it might be a great alternative to Pipeline Pilot, but I'm having trouble ...
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52 views

Function related to Orange GUI

I am a beginner to Orange GUI data mining software and I have some questions related to that. First, I would like to know if there is any search function so that I can search if a column contains a ...
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Orange cost sensitive classifier

How do I go about applying cost sensitive classifier in Orange? I need to get a confusion matrix and predictions for a specified ratio of FP and FN. ROC curve widget lets me choose that ratio but ...
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1answer
58 views

Orange 3.15 GUI window size issue (Windows 8.1)

I'd just like to report an annoying GUI bug I am experimenting under Windows 8.1 using Orange 3.15. The work space available doesn't size up with the window making the use of the software quite ...