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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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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43 views

Image grid - labels?

I was wondering if labels could be visualized below images in the image grid tool in Image Analytics? I know, this feature might be not terribly useful for images in general, hence unlikely to be ...
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22 views

LDA in Orange Linear Projection widget?

I'm struggling to get an LDA in Orange 3.28 (GUI). Using the good'ol iris dataset, loaded from the dataset widget: The data, as you can see, is loaded as it should and has "iris" set as ...
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1answer
16 views

Out-of-bag error in Orange3

There is some way to see the out-of-bag error in Orange3? The widget Test and Score only reports mean squared error, root mean square, mean absolute error, coefficient of determination and root-mean-...
2
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1answer
118 views

How can I “export” a model from Orange once I have prototyped a solution?

Using Orange, I would like to use the underlying python model within the control system of my device. The device is a simple machine which is not connected to the internet. My intent is to use the ...
2
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0answers
42 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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0answers
191 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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0answers
81 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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0answers
266 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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0answers
52 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
221 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 ...
2
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1answer
55 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
39 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 ...
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60 views

Orange “Scatter plot” widget to excel, best way

So I have chosen "Orange" for my research as a main app for clustering ant it's analysis. Excel 2016 is primary app used for dashboard (via "pivot table"). Problem - how to add graphs from "scatter ...
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23 views

Classification with Orange error “test and train datasets have differents target variable”

m having a problem on the widget "Test and score" used for classification. Im doing a classification on images and i would like to use the widget "test and score" with the option &...
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1answer
52 views

Removing duplicate rows in orange3

In Orange3, I have a table with row duplicates. How can I simply remove the duplicated rows to keep only one copy of each? I feel like Orange3 is great but cannot do simple tasks. I hope I just did ...
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39 views

whether to use normalization while performing PCA?

I have an excel file containing a table where I registered the frequency of three linguistic phenomena in 72 poems. Since the poems have different lengths I normalized the results dividing each value ...
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15 views

Creating API For Accessing New Website

Is there a way to add a API in Orange Data Mining Tool to access a new website? An example would be can I create and add an API for CNN or MSNBC or FOXNEWS? Currently in Orange in the text mining add-...
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29 views

Data table manipulations in Orange

I am having some issues doing operations on my data table in Orange. I need to split my table into two different tables, being a table containing all the instances for y = yes and a table containing ...
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48 views

Stratified K Fold Cross Validation in Orange: python script

I am using Orange to predict customer churn and compare different learners based on accuracy, F1, etc. As my problem is unbalanced (10% churn - 90% not churn), I want to oversample. However, when ...
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0answers
50 views

Orange data mining: Balancing data set using imblearn code

I am using an unbalanced dataset. I wanted to oversample my dataset using a python script (Scripting code for class imbalance in Biolabs Orange). However, it still gives me an error ...
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1answer
22 views

Cluster Hyperspectral Images in Orange

Orange has a hyperspectral dataset called "liver cirrhosis" and you can visualize the hyperspectral image using the hyperspectral image widget. However, I would like to perform various ...
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0answers
64 views

Using if statement as a model in orange

I am seeking to evaluate logistic regression against a rule-based (nested if-else statements) classification in Orange. The steps I've taken to investigate this are as follows: I could not identify ...
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1answer
30 views

Geo Add-on Choropleth Widget not found

I am trying to create a Choropleth map using the Chorolpeth widget from the Geo Add-on in Orange. However, this widget is not appearing? Any ideas? My current version: Orange version 3.24.1 for ...
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61 views

Trying to use term document matrix as input to orange 3

I have a CSV file that has tokens as columns and documents as rows, where the rest of the cells are ints that represent term frequency. I'm trying to use this as input into Orange 3, but Orange 3 ...
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34 views

How can I map category values to , e.g., increasing numbers (for anonymization purposes, say) in Orange?

I have a dataset that contains data that needs to be preserved for e.g. clustering purposes, but whose concrete values do not matter. For example, order numbers or serial numbers with lots of ...
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1answer
130 views

Visualizing categorical data in scatter plot with Orange (version > 3.18)

Why in Orange versions after 3.18 is not possible to visualize categorical data in Scatter Plot widget?
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1answer
46 views

Suggestion for a better way to organize data to generate frequent item-sets?

I have a data of a bag of words in a document. The data has 3 columns: {document number, word number, count of the word in the number}. I am supposed to generate ...
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29 views

Does Orange allow you to change the decision threshold in modelling widgets?

I can't seem to find an option with the modeling widgets for Orange to allow changes in the decision thresholds. Is this option available?
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0answers
27 views

How to upload SOFT files in Orange?

I have a dataset which I obtained from NCBI, but it is a SOFT file. When I upload the SOFT file to the file widget in Orange, it cannot be uploaded. Is there a way to upload SOFT files in Orange?
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58 views

How to save data table in Orange3

I've setup a workflow in Orange3 and have tested some models. Now, I have the results in a Data table widget and I'm wondering if there is a way in which I can save the output of said widget? I've ...
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0answers
99 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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0answers
55 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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0answers
53 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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0answers
76 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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0answers
79 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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0answers
232 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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0answers
43 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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1answer
338 views

Modify value of data in Orange

I am new to Orange and it seems very useful for conducting exploratory data analysis. One question I have is - can we use a widget to modify some values in the dataset? For example, several numerical ...
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0answers
54 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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0answers
398 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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2answers
74 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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1answer
96 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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0answers
334 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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0answers
40 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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2answers
2k views

How to do multivariable regression in Orange3?

Orange3 contains a number of regression widgets, but they all seem to be univariable i.e. one independent variable that correlates to one dependent variable. When I have more independent variables ...
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0answers
36 views

AUC calculated for a given target class while there are more than 2 groups to compare with

I have used random forest classifies to classify 4 groups (or class). For each group (target class) the AUC has been generated. Using "Test&Score" (from orange) provides AUC for each target class (...
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1answer
48 views

Orange reading in new features from Tab-Delimited File

In my tab delimited file I have 65 features and 1 target variable that are numerical and continuous. My data is supposed to be used for regression models. There should be 65 features and 1 target ...
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0answers
34 views

Orange Feature Construction widget: Inability to see formulas while file sharing

Our team is sharing Orange "work bench" files across team members. Unfortunately, we find the Feature Construction widget does not display code consistently (nor is there any "x" to indicate an error)....
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0answers
317 views

Classification using Orange 3

In Orange3 while only using its widgets, without writing Python code, I’ve implemented the following typical machine learning processes Train a training set, (1 file) Validating a validation set (e.g....