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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 ...

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32 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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73 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
300 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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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.
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1answer
35 views

Filtering detail table based on selection in summary table in Orange 3.11

I'm rather new to Orange, so apologies in advance if I'm missing something obvious or am trying to fit a square peg in a round hole. I have two files, Summary and Detail, that I'm importing into an ...
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37 views

how to loop over different data sets using orange(data mining program)?

For example I have 10 different data sets that I would like to analyze separately using Orange. But I want to analyze these 10 different data in a same way. How do I loop over these?
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20 views

Orange: Creating Returns series

I am trying to create a 'returns' series for an asset i.e. EURUSD If my series is named $S$, I need to define $R(t)=S(t)/S(t-1)$. Is there a clever way to create the lagged variable in the Feature ...
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0answers
39 views

Scripting inverse PCA or MNF in Orange (biolab)

I have a data table with many rows and columns that I have successfully taken through K-means and PCA workflows in Orange. Now I'm trying to calculate the "minimum noise fraction" of the data. This is ...
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56 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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1answer
767 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?
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1answer
1k 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 ...
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38 views

Memory error in orange when i use test score with svm?

i am using orange for text mining and i have a reviews more than 4 million ..when run on orange then it will generate error "memory error" ..and also when apply p reprocess then it will done 80% ...
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76 views

Orange machine learning Text mining twitter feature

I am using the twitter feature in Orange. However, when I save the corpus in a file, it eliminates the detailed URL information (unwrapped / expanded URL ). It only provides the shorten version of the ...
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1answer
99 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 ...
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0answers
105 views

HOW to remove this error in Orange target variable set .use txt file (csv) format?

We will generate sentiments using sentiments analysis widget but i have a issue when i am using txt (csv) file format i am use xlsx file format then it work good but i want to use text file (csv) ...
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0answers
78 views

Different results with the same flows

I've tried to repeat the same results with the same flow, and I don't understand the results are different in each situation. I describe the situation I have a file with 192 instances and 37 ...
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1answer
37 views

Classification execution time - Orange

Is there any way to find out execution time for classification algorithms in orange?
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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 ...
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1answer
56 views

“Some scores could not be computed” in Orange, yet they're shown in results table of Test & Score

Take a look at this screenshot: It took a good 20 minutes to compute the score. Is the score shown in the table still valid under this erorr, that "some scores could not be computed"? The other ...
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1answer
109 views

How to use SVM in Orange

How to use SVM in Orange for sentiments analysis? We will generate sentiments using sentiments analysis widget but now how to use SVM and how to teach SVM in Orange? i am use xlsx file format then it ...
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1answer
57 views

Has anyone gotten the Orange3 Prototype Widget “Significant Groups” to work?

The Prototype Widget "Significant Groups" would be a great help in hypothesis testing. Has anyone gotten it running??? I have tried just about everything. Whenever I try to "Compute", I get the ...
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0answers
73 views

Widget “Image Embedding” of Orange with local model

Is there a way to prevent the image upload by Orange by doing the embedding locally, e.g. with a local installation from here. The script: ...
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0answers
37 views

Custom color scheme for Orange3 heat maps

I have a tab-delimited file of data that I'm trying to visualize with a heat map. I'm able to read the data using Orange3 but I'd like to change the color scheme to something that isn't on the widget (...
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1answer
91 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 ($AUC$, $CA$, $F1$) ...
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0answers
88 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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217 views

Orange: Text mining - export corpus to table

I've been playing around with Orange Text Mining with the intent to: Extract tags and topics that can be linked to documents for better search Extract Names and Locations I've done nr 1, but need to ...
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0answers
144 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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220 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. ...
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1answer
127 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' ...
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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....
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1answer
182 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
341 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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1answer
202 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
329 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 ...
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0answers
131 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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2answers
120 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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67 views

What can I do with this data?

I have some data I collected off a forum. It is essentially Nissan Leaf battery state of health along with ODO reading, number of charges, age of vehicle, generation of model, battery size. Its not ...
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2answers
835 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
47 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
86 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 ...
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1answer
222 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
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 ...
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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 ...
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2answers
674 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 ...
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1answer
324 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 (...
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2answers
314 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
147 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 ...
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1answer
3k 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
152 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 ...
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1answer
112 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:...