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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83 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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0answers
41 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
51 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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0answers
52 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
17 views

tsm_system_time extension not available on Azure Postgresql [closed]

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
117 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
65 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
74 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
84 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
44 views

Can Orange read an excel file on Sharepoint or Onedrive? [closed]

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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90 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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269 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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49 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
519 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
60 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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497 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
738 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 at the moment, when you try to load a table ...
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1answer
356 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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0answers
175 views

How do I get Text Mining on Orange version 3.18 [closed]

I just downloaded Orange version 3.18, but it is not displaying any of the Text Mining widgets (i.e. Corpus Viewer, Word count). Is there a later version of Orange that I should download or is there a ...
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0answers
27 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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0answers
240 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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0answers
325 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
385 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
141 views

Is there a way to use 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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0answers
43 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
38 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
50 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
35 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
326 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....
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0answers
153 views

Orange: Predictions widget on same data gives different results

I have built a simple tree predictor and then applied this to a new set of data. This was giving a very different probability distribution so I tested connecting the same training data and comparing ...
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0answers
140 views

Limitations while using orange for clustering

I have tried clustering using kmeans in Orange but it looks like there are certain limitations as listed below, - Supports up to 5000 records only - no. of clusters can be only 30 Can someone please ...
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0answers
260 views

get data in python script in orange [closed]

How to get sentiment analysis data widget in python script in orange and how this data used for other purpose and apply on this sentiments data different methods
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1answer
250 views

Feature construction widget on Orange 3.13

I am working with Orange for my thesis with logs and core data; however, since I am a beginner, I am a little bit stuck with the feature construction widget. Ultimately, I would like to combine ...
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66 views

Are interactive command lines from orange3 possible

I wonder whether orange3 allows to get commands that are running "behind" a certain statistical procedure? This would be like in ...
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0answers
227 views

Orange: Group samples by a "splitting" feature for cross-validation?

I need to split my datasets based on my own feature column in order to hold together certain data rows (e.g. from one patient, or compound) for cross-validation (CV). In Orange 3.11, Test&Score ...
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1answer
1k views

Scripting code for class imbalance in Biolabs Orange

I'm trying to manipulate some data in Biolabs Orange, using the built in Python Script widget and information at Biolabs Orange tutorial on scripting. However, I'm struggling with taking the results ...
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0answers
129 views

Orange Biolab custom widget learner input

I was able to install the demo widget in Orange 3.9.1 and made it work with these learners Naive bayes Logistic regression In other words I was able to connect the nodes to the newly installed "...
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0answers
526 views

How to tune the hyper-parameters of an estimator in Orange Tool

Hi I want to tune/search hyper-parameters of SVM in Orange tool. How can I do? I want to apply Exhaustive Grid Search to SVM http://scikit-learn.org/stable/modules/grid_search.html
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0answers
575 views

P-values in Orange

I'm new to orange and struggling to find p-values, using different regression tools. It seems the outputs are only coefficients. What am I missing?
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2answers
2k views

Orange3 summarizing data, grouping data values

Is there a simple way in orange3 (not writing a Python script) to summarize data and group similar data values? For example, instead of plotting a scatter with lots of data points, I would like to ...
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0answers
221 views

Problem connecting to Postgres [closed]

I want to use the SQL table connector to link data in a PostGres database which is on my local machine running as 9.6. When I do this I get the following error; ...
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0answers
54 views

Orange canvas will not properly parse/open a file with a long header (column) line

I have a tab delimited data set with 23 columns. The header for this file names the 23 different features in the dataset. The column names are... file yval size err a-value b-value c-value ...
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1answer
845 views

Database missing extensions:tym_system_time,quantile orange widget error

I'm working with the orange data mining tool. In most of the examples data taken from files or google sheets links but in the blog link they given that we can take data from postgresql database ...
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1answer
899 views

Overcome memory limitation when downloading from database into Orange

I would like to run the association rule mining algorithm of the Orange library on a dataset that is stored in a PostgreSQL database. The table 'buildingset' contains the itemsets for each user, thus ...
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0answers
94 views

SPSS style custom tables in Orange

Is there a way to draw custom tables like in SPSS where you put some attributes to rows and some to column to visualize clustering results?
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1answer
179 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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1answer
152 views

Error opening Iris.tab file in Orange load data widget [closed]

I am attempting to load in the Iris.tab data set into the Orange load data widget. However, when I do this, I get the following error message (shown above). This keeps popping up when I start up ...