Questions tagged [orange]
Use for questions about Orange, the free, open-source, component-based, data mining and machine learning software suite.
236
questions
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2
answers
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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 & ...
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5
votes
1
answer
191
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
1
answer
11k
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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 ...
- 143
4
votes
3
answers
9k
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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 ...
- 141
4
votes
1
answer
665
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!
- 41
4
votes
1
answer
76
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.
- 41
4
votes
1
answer
2k
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.
...
- 143
4
votes
1
answer
161
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 ...
- 171
4
votes
0
answers
61
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 ...
- 41
4
votes
3
answers
8k
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
2
answers
3k
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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.
...
- 183
3
votes
1
answer
4k
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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 ...
- 7,297
3
votes
2
answers
11k
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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 ...
- 143
3
votes
1
answer
354
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' ...
- 31
3
votes
3
answers
4k
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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 ...
- 133
3
votes
2
answers
2k
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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:
...
- 96
3
votes
1
answer
595
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?
- 355
3
votes
1
answer
782
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 ...
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2
votes
1
answer
159
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 ...
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2
votes
1
answer
477
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 ...
- 1,625
2
votes
2
answers
378
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 through the add-on menu. I found the Github ...
- 1,625
2
votes
2
answers
2k
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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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2
votes
1
answer
3k
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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 ...
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2
votes
1
answer
258
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?
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2
votes
3
answers
9k
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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....
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2
votes
1
answer
451
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
1
answer
87
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 ...
2
votes
1
answer
313
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
1
answer
712
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
...
- 21
2
votes
1
answer
6k
views
How do I start Orange on Linux [closed]
I installed Orange on Ubuntu Linux via conda install orange3, as described in the Orange documentation.
I see the package installed in Anaconda3 / pkgs directory ...
2
votes
1
answer
957
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.
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2
votes
2
answers
1k
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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 ...
- 21
2
votes
1
answer
315
views
In Orange Data Mining, how do I use results from clustering a training-set to test and score a test-set?
I am performing analysis on the well-known 'Adult' data-set, available on UCI using Orange Data Mining. In a PhD thesis, Pelleg (2004; pg 79) uses unsupervised clustering of the prescribed training ...
- 121
2
votes
1
answer
125
views
Difference between DataSampler and TestAndScore widgets in Orange
I'm trying to figure out the difference between using the data sampler to get a 70/30 train/test split and directly using the ...
- 41
2
votes
0
answers
111
views
What type of 'Naive Bayes' algorithm is provided by Orange?
I've been using Orange for a while to rapidly prototype a few classification models. One of the ones I've been using is 'Naive Bayes'. If I understand correctly, there are a few types available based ...
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2
votes
0
answers
284
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 ...
- 121
2
votes
1
answer
55
views
Out-of-bag error in Orange
There is some way to see the out-of-bag error in Orange? The widget Test and Score only reports mean squared error, root mean square, mean absolute error, coefficient of determination and root-mean-...
- 21
2
votes
1
answer
95
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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2
votes
1
answer
184
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?
- 21
2
votes
1
answer
1k
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. A device is a simple machine that is not connected to the internet. My intent is to use the ...
- 21
2
votes
0
answers
64
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.
- 21
2
votes
0
answers
248
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:
Create a learner based on <...
- 185
2
votes
0
answers
147
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 ...
- 21
2
votes
0
answers
706
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
1
answer
772
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
1
answer
1k
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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 ...
- 21
2
votes
0
answers
76
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 ...
- 21
2
votes
1
answer
102
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
2
answers
123
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 ...
- 31
2
votes
0
answers
55
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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