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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17 views

How do I perform a Kaiser-Meyer-Olkin test (KMO) on Orange? [closed]

How do I perform a Kaiser-Meyer-Olkin test (KMO) on Orange?
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16 views

In Orange what do types: class, meta, weight, and ignore mean?

The third row of an Orange data file should give each column one of: class, meta weight, or ignore. I understand ignore and meta are to be ignored. But what do class and weight do? Their docs don't ...
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9 views

How to make table from line chart on Orange?

I have difficulty to summarize the forecasting result using VAR algorithm. I can make the line chart for forecast value with the following future date but I can't make table about how future price ...
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15 views

PCA and orange software

I am analysing if 15 books can be grouped according to 6 variables (of the 15 books, 2 are written by an author, 6 by an other one, and 7 by an other one). I counted the number of occurrences of the ...
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15 views

Orange - Different results in Test&Score widget with the same data

I am developing a classification model with Orange 3.23.1 Whenever i run model on the same data, i get different resluts in Test&Score widget. I use cross validation for evaluation. How can i set ...
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1answer
42 views

Orange Geo Map does not show background map

We run Orange with our students and most of them have problems with running the Geo Map widget. It does not show any background map. In the bottom an error message is displayed: "Cannot fetch map from ...
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8 views

Orange - 2 Fixed Centroids and 3 Variables

I am working in a Facility Location problem. How can upload two fix centroids and build 3 k-means clusters in Orange? Thank you so much!
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18 views

How to improve computation speed on Orange?

I need to process huge data sets on Orange 3.23. My Orange workflow contains several widgets in parallel. It seems that Orange launches each process at a time. Is there a way to run several processes ...
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16 views

Widget set incomplete

I'm having a problem with only a subset of the Orange widgets showing up. I'm working on a PC, and have successfully downloaded the latest version "3.23.1". Everything seems to be working fine, ...
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14 views

Are there any public documents/code pertaining to the parameters and configuration for the Image Embedding node/API?

Are there any public documents/code pertaining to the Image Embedding node/API configuration being used to extract the features based on the Inception V3 model? (extract occurs on an unknown remote ...
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1answer
26 views

Can you suggest a better to organise the data to generate frequent itemsets?

I have a data of a bag of words in a document. The data has 3 coulumns : document number, word number, count of the word in the number. I am supposed to generate frequent itemsets of particular size. ...
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13 views

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

I can't seem to find an option with the modelling widgets for Orange to allow changes in the decision thresholds. Is this option available? Thanks.
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17 views

How to use SOFT dataset 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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25 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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35 views

Is there Orange support for MySQL and SQLite?

I would like to be able to directly access both MySQL and SQLite databases as part of an Orange workflow. I see there is support for PostgreSQL and (possibly)
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25 views

Error while importing 'Orange.widgets.data.owpivot'. The widget will not be shown

I installed Orange3 v3.22. When I open it from Anaconda, I get: ...
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9 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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15 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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25 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
150 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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46 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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32 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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0answers
12 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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0answers
27 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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99 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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34 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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32 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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43 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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40 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
57 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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41 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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25 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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0answers
42 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
95 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
82 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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0answers
53 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
35 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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77 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
132 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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0answers
40 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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28 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
63 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
80 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
22 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
70 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
33 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
187 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 ...
2
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0answers
24 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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24 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
152 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.