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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133 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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0answers
30 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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0answers
118 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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0answers
36 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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3answers
328 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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0answers
31 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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0answers
27 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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0answers
205 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
283 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
141 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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0answers
125 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
257 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
224 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
763 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
43 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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0answers
93 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
60 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
114 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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1answer
68 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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0answers
84 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
25 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
44 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
337 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
1k 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
176 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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0answers
128 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
66 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
93 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
389 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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0answers
187 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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0answers
32 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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0answers
30 views

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 ...
2
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1answer
63 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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0answers
220 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
2k 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
38 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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0answers
80 views

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
202 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
146 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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2answers
3k views

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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2answers
72 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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0answers
32 views

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
70 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 ...
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1answer
74 views

Dataset with disproportionately more of a single label than any other

I'm using the data analysis software Orange to analyze rows of data with labels $\{H, T,L\}$. $T$ is the neutral state of the system I'm trying to model so data is almost always labeled with $T$. ...
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1answer
816 views

Orange Data Mining load saved models

I am planning to use the Orange Data Mining Tool for easy data exploration and model generation. What is still unclear to me is: after finding a good model, what can I do with it, how can I use or ...
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2answers
70 views

Elastic net regression in orange

The penalty term for Elastic regression is written as How are the values of lambda's calculated if the slider is moved from the right to the left. I have read most the material available on the ...
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1answer
304 views

Orange imports numeric features as categorical (“file” widget)

Why are some of my numeric features not being recognized as 'numeric' types AND why can't I reclassify them? I can't share my CSV here but I can assure you those features are indeed numeric (I use ...
2
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1answer
91 views

Addition and subtraction of values of two columns when using Orange GUI

I am a new user to the Orange GUI. I would like to know if there is anyway I can add or subtract two columns and then return the result as a new column?
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1answer
212 views

Orange wont allow me to set target for corpus

I need to do a linear regression on an excel file. I have descriptions in one column and category in the other. I need to be able to set the target to do a linear regression. However, Orange doesn't ...
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1answer
768 views

How to properly predict date using Orange 3

First of all - I'm new to all of this. I'm trying to create a model to predict the release of ios 12 based on previous years. I've got an excel that has a format like this: ...