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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3answers
4k 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....
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1answer
383 views

What does the Orange widget “Image Embedding” do exactly?

I would need to know what this widget does. What architecture does it use? What dataset has it been trained on? And so on.
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2answers
1k 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 ...
2
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1answer
520 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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2answers
1k 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
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0answers
194 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; ...
2
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2answers
300 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 ...
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2answers
2k views

Why Orange “Predictions” and “Test & Score” produce different results on the same data?

It is not very clear what is the difference between the following two schemes: From help docs: Test & Score widget: tests learning algorithms on data. Predictions widget: shows models’ ...
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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 ...
1
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1answer
105 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 ...
0
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1answer
445 views

How do I get a word frequency list? Can't export from Word Cloud

I have a list of survey responses and want to analyze the frequency of words used. Using Orange, I've loaded the file into a Corpus, then Preprocess Text, then Word Cloud. The Word Cloud does not ...
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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 ...
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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 ...
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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
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1answer
638 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 (...
6
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2answers
634 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 & ...
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1answer
205 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 ...
2
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1answer
7k 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 ...
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2answers
195 views

Picking the right file format for Image Embedding

I have been using Orange Machine Learning software to try to create a facial recognition program. I am trying to import images (test data) using the import images widget. Do you guys know which file ...
0
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1answer
159 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:...
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2answers
217 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 ...
2
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1answer
302 views

Installing Package from GitHub for ML in Orange [duplicate]

Trying to integrate some prototype widgets into Orange Data Mining to do some machine learning with facial recognition. Trying to install the package from https://github.com/biolab/orange3-prototypes....
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2answers
222 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
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1answer
114 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 ...
0
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1answer
297 views

Orange3 does not show Geo Map tool on OS X

I am using Orange 3.3.11 and I cannot find "Geo Map" widget on OS X. But the documentation says there is such a widget. How can I find this widget?
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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 ...
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2answers
72 views

Is there a way to weight instances based upon the values of a feature?

Is there a way to weight instances based upon the values of a feature? For instance for making a sample better resemble a population on certain parameters.
1
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1answer
382 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 ...
2
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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 ...
1
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1answer
858 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 ...
0
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1answer
2k views

Orange 3 - Feature selection / importance

I am using (and loving) Orange 3 for some projects at my school and have a question: When using Python and e.g. doing a RandomForest Classification, I can easily access the feature importances by ...
0
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1answer
186 views

Is there a network analysis tool built into Orange?

I am interested in a canned or built-in network analysis tool. Wondering if this is possible with Orange.
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1answer
40 views

Score for Ranked plots using scatter plot widget

I'm using orange 3 and when I Score plots using the scatter plot widget how do I view the numerical score associated with the ordered list of plots. Did that feature get removed with the upgrade from ...
1
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1answer
6k 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. ...
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1answer
121 views

How to connect dots with lines in Scatter Plot or some other Plot?

Subj. Given the following in Scatter Plot: . . . . How to get something like: . / \ .__. . ?
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2answers
872 views

How to preprocess data in a data table? (e.g. change a value in each row for some feature)

I Have a general question - how to preprocess data in Orange. E.g. I want to do something with each row value of some feature. How can I do this visually? And how can I do this via Python Script? So ...
1
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1answer
309 views

How to create a social network like IBM's Watson News Explorer?

I was much impressed by the news-explorer view of IBM.It shows a network view with on searching a keyword and it explores the relational edges with a graph. Here it is I think it uses the k-means ...
1
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1answer
633 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 ...
0
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1answer
98 views

Import Orange 2.7 canvas in Orange 3 [closed]

I have a saved canvas I created in Orange 2.7. I just installed Orange 3 and opening the old canvas gives multiple "UnknownWidgetDefinition" errors. I gather that the naming/location of some widgets ...
0
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1answer
960 views

Do statistical test with orange between data

I'm learning orange and I'm looking to performe some statistical test on my data. The test I usually do are z-test, t-test, chi-square test and Anova. Can I use a widget to do these or should I do a ...
0
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1answer
1k views

Orange, K-means clustering, memory error

I have a dataset of over 67 000 records, and I'm trying to run a k-means cluster analysis on that. Orange returns a memory error. The data is in an excel file, but I also tried to load it from a csv. ...
1
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1answer
726 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 ...
4
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1answer
507 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!
1
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1answer
52 views

Discrete Values Matrix: Select Rows and Scattered Plot problem

I ran in a somewhat basic problem with Orange 3.3.1... but wonder if this is a bug or something I don't understand: I have a Matrix, all with discrete values. I select Columns, that goes ok Select ...
1
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2answers
328 views

Text Mining error

I'm trying to get used to text mining using orange. I set up a very easy workflow loading a corpus (tab separated text file containing 10 entries), using a corpus viewer that shows my data correctly ...
4
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1answer
141 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
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1answer
531 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
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1answer
575 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 ...
2
votes
1answer
369 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? ...
3
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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. ...