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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 ...

7
votes
2answers
318 views

Differences between Test & Score results and calculated by Confusion Matrix (accuracy, sensitivity and specificity)

We are using Orange and have 2 files (training and testing). We apply different Learners (kNN, AdaBoost...) and get the Evaluation Results. But we have some doubts about some options in the Test & ...
4
votes
3answers
6k views

Overcoming “too many indices for array” error when loading file into Orange

I am attempting to load the Stack Overflow 2017 developer survey results into Orange. The dataset has ~51.4K rows with 156 features. It is comma separated and is about 91MB in size. When I attempt to ...
4
votes
1answer
352 views

In Orange, is it possible to analyze or visualize real time, streaming data?

Using orange, I would like to be able to do real time analysis or visualizations on streaming data. I would appreciate any input on the matter!
3
votes
1answer
418 views

Can I run Orange widgets from normal Python scripts?

I'd like to do normal machine learning with Python and Sklearn, but occasionally use the nice graphical widgets or Orange for presentation. Is this possible?
3
votes
1answer
364 views

How Orange makes decision about declaration of a meta attribute

I wonder how Orange decides which attribute is declared as a string? I have few discrete attributes in Excel, which I can't use as Orange does not recognize them as discrete. Have tried export excel ...
3
votes
1answer
47 views

F1 calculation test

The formula for F1 harmonic mean F1 score is F1 =2*(precision*recall)/(precision + recall). The values under the column F1 don't agree with the formula. Any answers
3
votes
0answers
22 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 ...
3
votes
1answer
43 views

Could I use logloss as classifier performance measures when “Test & Score”?

I try orange today, and want to use logloss as the classifier performance measures when "Test & Score", but I don't know how to do that.
3
votes
1answer
117 views

Is it possible to create feature groups in Orange?

Background: I am trying to use Orange as to classify if a patient has TB based on their coughing sounds. In the dataset, there are say 100 patients and for each patient we have 10 coughs. For each ...
3
votes
2answers
3k views

Question about (Python/Orange) Apriori associative algorithm

I'm trying to wrap my head around Association rules and frequent itemsets. So I threw my data in, instead of the samples one and sometime it works, sometimes it doesn't. ...
2
votes
1answer
905 views

How to get summary statistics in Orange?

I just started using Orange, and am having trouble finding how to get basic summary statistics, like the n (count), average, and standard deviation. Is there a widget that does this and I'm simply ...
2
votes
1answer
25 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 ...
2
votes
2answers
161 views

How do I integrate github files to Orange for ML?

I am currently trying to make a facial recognition workflow with Orange but since the widgets are still prototypes they are not all available in Orange. I found the github files for the widgets but ...
2
votes
1answer
27 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?
2
votes
1answer
128 views

Using already trained classifiers in Orange

I know that with Orange it is possible, using the 'Test & Score" widget, to test the performance of a classifier trained on a specific training set using a different test set ('Test on test data' ...
2
votes
2answers
2k views

Training set, validation set, and test set with Orange

Is it possible with Orange (only using its widgets, without writing Python code) to implement the following typical machine learning processes? Train a training set, Validating a validation set (e.g....
2
votes
2answers
90 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 ...
2
votes
1answer
203 views

Is there an Orange server to deploy the models developed in Orange 3

I am new to Orange 3 and while the tool looks very promising, I was wondering if there is an Orange server where the model can be deployed for a production instance.
2
votes
0answers
13 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
votes
1answer
74 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: ...
2
votes
0answers
25 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 ...
2
votes
1answer
792 views

Export Python Code from Orange

Since Orange is just running python code under the hood... is it possible to set up and do my analysis in Orange but then export or output the underlying code for documentation or replication?
2
votes
0answers
233 views

Use Feature Constructor in Orange to extract number from string?

I would like to use the Feature Constructor to extract numbers from a column of strings. ...
2
votes
1answer
248 views

Orange 3 Heatmap clustering under the hood

I have recently used the heatmap widget in Orange 3. All the documentation says is "Clustering (clusters data by similarity)". Is this using hierarchical or k-means or some other type of clustering? ...
1
vote
3answers
80 views

Regression for non linear data

I have a non-linear dataset. How can I do regression in orange? Orange does not have polynomial regression widget.
1
vote
2answers
161 views

Orange Infrared

I must say Orange has really done great job in the world of machine learning. I have 3 questions. (1) I have found "Orange Infrared" has been added recently. But I haven't found any kind of data ...
1
vote
2answers
1k views

How do I access orange on Ubuntu 16.04

I have used pip to install orange and the installation seemed fine. There was not Orange icon on my ubuntu 16.04 desktop and tried orange3 in the command line, it didn't work, and tried python3 -m ...
1
vote
1answer
148 views

Can I create a word cloud of crowdfunding donors using word cloud?

I have a table like this: FirstName SecondName Amount Lorenzo Perone 100 Mario Rossi 25 ... ... ... I'd ...
1
vote
1answer
797 views

Orange Text Mining Data Format

Is there a special header structure required for text classification problems? I'm trying to do Tweet classification using the text mining plugin. I have the data in a CSV file, with one column ...
1
vote
1answer
31 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 $T$. ...
1
vote
1answer
38 views

Classification execution time - Orange

Is there any way to find out execution time for classification algorithms in orange?
1
vote
2answers
696 views

Using Predictions: Data does not have the same target as predictors

As per the Orange video tutorial: youtu.be/D6zd7m2aYqU?list=PLmNPvQr9Tf-ZSDLwOzxpvY-HrE0yv-8Fy I'm trying to make predictions on a new dataset based upon one that's already been 'coded' - both data ...
1
vote
1answer
85 views

Orange Iris.tab error [closed]

This is the error message that is popping up when I start up Orange Data Mining and try to load the iris.tab data file. It used to work fine now it is showing this error. How do I fix this? I am very ...
1
vote
1answer
201 views

Predict datetime variable with orange canvas

Since Orange is able to read datetime variables, i tried to build a simple workflow to predict datetime variables via regression. Loading the data etc. is no problem, but when it comes to predict the ...
1
vote
1answer
3k views

Target variable problem :- Classifier [closed]

I installed orange version 3 yesterday. I defined variables in excel file as per instruction given in documentation. When I used simple plots it works fine but in case of classifier it's not working. ...
1
vote
1answer
23 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 ...
1
vote
1answer
54 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 ...
1
vote
1answer
28 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 ...
1
vote
1answer
36 views

How to process multivariant questions in Orange

can you explain how to process multivariant questions in Orange? For example: I have sociological survey database. Among the others there is question: How would you like to spend your weekend? (pick ...
1
vote
1answer
32 views

Orange file import method for raw binaries

I tried to add a binary import method to class FileFormat(metaclass=FileFormatMeta) in io.py, but gave up trying to adapt a copy of the CSV method since so much is specific to CSV issues and the ...
1
vote
1answer
102 views

Equation of Linear Regression

I performed Linear Regression on the data set with two attributes (Salary and YearsExperience) using orange data mining tool. Salary is a dependent variable and <...
1
vote
1answer
131 views

Orange Linear Regression and scikit-learn linear regression gives different results

I am trying to cross-validate my scikit-learn script by mean of Orange3, thus obtaining a nice visual representation. Doing step by step, to keep it simple I just tried to cross-validate a simple ...
1
vote
1answer
101 views

Orange: Save Model

I set up a neural network model with a training and test data set and saved the model with the "Save Model" - Widget. I wonder what kind of information the saved pickle-file contains? Does it only ...
1
vote
1answer
70 views

In orange, how do you split a given table at a certain row id?

I was thinking of adding another column called "Test / Train" in which a 0 would indicate test and a 1 would indicate train data, and then as I'm collecting data end the train data collection phase ...
1
vote
1answer
92 views

Getting results of folds in orange canvas

I am using Orange Data mining 3.8 to classify a dataset using leave one out cross validation. I know that the results ($AUC$, $CA$, $F1$) are averaged; How can I get the results ($AUC$, $CA$, $F1$) ...
1
vote
2answers
333 views

Orange 3 “Find Informative Projections” and target variables?

Having issues with the "find informative projections" feature in Orange 3. In order to be able to use this feature in the scatterplots, you have to select a target variable in the "select columns". So ...
1
vote
1answer
87 views

exporting the model parameters after training and testing

I want to construct a python micro service to generate predictions based on inputs from web via an API. I have trained a logistic regression model, but need to create a python script to run in AWS ...
1
vote
1answer
328 views

Using Orange3 to predict image class

I used logistic regression to classify 3 classes of images: cars, dogs, cows. The accuracy is 100%, perfectly separated in clusters (scatter plots). When I try to use the learner to predict 3 images (...
1
vote
1answer
114 views

Does anyone actually have Orange running on a Mac to test?

I have been trying now for over a week to download some GitHub add-ons for Orange. I do not know how to use Terminal and I am asking for help to install these packages. The link is git@github.com:...
1
vote
1answer
481 views

Orange 3 - Same prediction for all of my data when using impute widget

When I use a linear or random forest regression to train from data, I can make predictions with test data. I have a problem when I introduce the "impute" data widget in my pipeline to fill in the ...