Questions tagged [orange]
Use for questions about Orange, the free, open-source, component-based, data mining and machine learning software suite.
187
questions
7
votes
2answers
788 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 & ...
5
votes
1answer
161 views
F1 calculation test
The formula for F1 harmonic mean F1 score is
$$
F1 =2*\frac{precision*recall}{precision + recall}
$$
The values under the column F1 don't agree with the formula. Any answers
4
votes
3answers
9k 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
534 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!
4
votes
1answer
66 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.
4
votes
3answers
4k 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?
4
votes
1answer
146 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 ...
4
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.
...
3
votes
1answer
1k 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 ...
3
votes
1answer
8k views
Orange (Data Mining) : How to start using “Orange” from Python Anaconda Environment? [closed]
I have install "Orange Data Mining v3.4.1" in Anaconda Python v3 environment using commands : "conda install orange3" sucessfully.
However, I do not know how to call "Orange" as Application to start ...
3
votes
1answer
271 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' ...
3
votes
1answer
1k 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:
...
3
votes
1answer
983 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.
...
3
votes
1answer
541 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
618 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
0answers
2k 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 ...
3
votes
0answers
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 ...
2
votes
1answer
90 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
1answer
2k 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
2answers
440 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)
2
votes
2answers
5k 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
2k 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 ...
2
votes
1answer
150 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
3answers
6k 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
1answer
97 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?
2
votes
1answer
632 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
2answers
534 views
Orange Changes the data type
I have a column as month in my excel data set, when i load the data in the file, orange changes it to some numerical values.. Help! I want the Month as it is. Tried changing the value type as short or ...
2
votes
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
votes
1answer
59 views
Cross validation for unbalanced dataset using Orange data mining tool
I am using the Orange data mining tool to build and analyze models (decision tree, ANN, ...) predicting customer churn. As this is an imbalanced class problem (10% churn, 90% not churn), I need to ...
2
votes
1answer
96 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
votes
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.
2
votes
0answers
186 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 ...
2
votes
0answers
79 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 ...
2
votes
0answers
227 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 ...
2
votes
1answer
366 views
Predicting house price using linear regression [closed]
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 ...
2
votes
0answers
50 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 ...
2
votes
0answers
212 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
votes
1answer
52 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 ...
2
votes
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 ...
2
votes
2answers
3k views
Orange Error - Installing Text Add On [closed]
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 ...
2
votes
0answers
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 ...
2
votes
1answer
429 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
231 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
2k 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
2answers
224 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
1answer
9k views
Orange: Data has no target variable error
I am trying to apply Random Forest algorithm on a data set using Orange. The target variable is not set in the data set. However, I know which column is the target variable.
How can I specify the ...
1
vote
2answers
3k 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
341 views
Installing Orange Package with older Python Version?
I am trying to install an Add-on package from GitHub that contains prototype widgets for Orange Data Mining. I am trying to install it from the GitHub page found here.
I am using the following ...
1
vote
2answers
261 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 ...
1
vote
1answer
1k 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 ...
