Stack Exchange Network

Stack Exchange network consists of 174 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.

Visit Stack Exchange

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 ...

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
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 ...
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
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?
1
vote
1answer
40 views

How to do multivariable regression in Orange3?

Orange3 contains a number of regression widgets, but they all seem to be univariable i.e. one independent variable that correlates to one dependent variable. When I have more independent variables ...
1
vote
1answer
26 views

Orange reading in new features from Tab-Delimited File

In my tab delimited file I have 65 features and 1 target variable that are numerical and continuous. My data is supposed to be used for regression models. There should be 65 features and 1 target ...
1
vote
1answer
59 views

Feature construction widget on Orange 3.13

I got stucked with this widget... I am an absolute beginner and I am now working with Orange software for my thesis with logs and core data. I need to combine different features to compare them. What ...
0
votes
1answer
21 views

Twitter API widget

I have created a API in Twitter. The orange widget twitter works fine if we do a search by content. But, it throws up an error if you search by author The error is: Api error(Twitter error response ...
0
votes
1answer
22 views

Orange3 Image Classification

Is the attached workflow correct in case of training and testing with different data sets? Is the attached workflow considered "transfer learning" since my images are not related to the images that ...
0
votes
1answer
32 views

Orange imports numeric features as categorical (“file” widget)

Why are some of my numeric features not being recognized as 'numeric' types AND why can't I reclassify them? I can't share my CSV here but I can assure you those features are indeed numeric (I use ...
0
votes
1answer
176 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?
0
votes
1answer
274 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 ...
-1
votes
1answer
33 views

Orange3 Windows 10 Edit Plots?

In Orange3 64-bit for Windows 10, is it possible to edit plots, graphs, charts, and diagrams interactively? If not, will this feature be added? For example, at minimum, I would like to increase the ...
-1
votes
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 ...
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 ...
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
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
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. ...
1
vote
0answers
14 views

How do I add error bars to a plot in Orange?

I'm trying to plot my data and see if it's comparable, but for this I need error bars (to see if the difference is within the margin of error). I cannot for the life of me figure out how to do error ...
1
vote
0answers
27 views

How to create a for-like loop in Orange3

This question has been asked before here but never received an answer. I'm planning to write a bunch of components that do some processing on single images. However, I have many such images and would ...
1
vote
0answers
24 views

Orange cost sensitive classifier

How do I go about applying cost sensitive classifier in Orange? I need to get a confusion matrix and predictions for a specified ratio of FP and FN. ROC curve widget lets me choose that ratio but ...
1
vote
0answers
21 views

AUC calculated for a given target class while there are more than 2 groups to compare with

I have used random forest classifies to classify 4 groups (or class). For each group (target class) the AUC has been generated. Using "Test&Score" (from orange) provides AUC for each target class (...
1
vote
0answers
17 views

Orange Feature Construction widget: Inability to see formulas while file sharing

Our team is sharing Orange "work bench" files across team members. Unfortunately, we find the Feature Construction widget does not display code consistently (nor is there any "x" to indicate an error)....
1
vote
0answers
79 views

Classification using Orange 3

In Orange3 while only using its widgets, without writing Python code, I’ve implemented the following typical machine learning processes Train a training set, (1 file) Validating a validation set (e.g....
1
vote
0answers
33 views

Orange: Predictions widget on same data gives different results

I have built a simple tree predictor and then applied this to a new set of data. This was giving a very different probability distribution so I tested connecting the same training data and comparing ...
1
vote
0answers
69 views

Limitations while using orange for clustering

I have tried clustering using kmeans in Orange but it looks like there are certain limitations as listed below, - Supports up to 5000 records only - no. of clusters can be only 30 Can someone please ...
1
vote
0answers
33 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 ...
1
vote
0answers
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 ...
1
vote
0answers
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 ...
1
vote
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 ...
1
vote
0answers
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 "...
1
vote
0answers
78 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 ...
1
vote
0answers
90 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
1
vote
0answers
146 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?
1
vote
0answers
48 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
vote
0answers
77 views

SPSS style custom tables in Orange

Is there a way to draw custom tables like in SPSS where you put some attributes to rows and some to column to visualize clustering results?
0
votes
0answers
9 views

Interface with wireless WIFI monitoring device

Will Orange collect and store data received from a remote WIFI connected monitoring device permitting subsequent analysis? The monitor will be gathering performance data on electric equipment.
0
votes
0answers
35 views

Parameter extraction from a spectrum

Every plant leaf has a spectrum from 400-1000nm possibly depending by parameters like: temperature, moisture, sunlight, soil. I have a dataset of leaves with respective parameter values and a ...
0
votes
0answers
13 views

GO Browser in orange - Reference data set

I have problems using a reference data set in Orange GO Browser. It accepts data from a data file, but not as a reference set. Anyone faced the same problem? any solutions? Getting now this error ...
0
votes
0answers
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?
0
votes
0answers
39 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% ...
0
votes
0answers
108 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) ...
0
votes
0answers
80 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 ...
0
votes
0answers
74 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: ...
0
votes
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 (...
0
votes
0answers
218 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 ...
0
votes
0answers
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 ...
0
votes
0answers
63 views

Debug Orange, different results on different machines

We are getting radically different results in Orange on different computers even though the same data file and workflow and version of Orange are being used. How can we debug the problem? As you can ...
0
votes
0answers
32 views

Orange Discretize using rank values

I am newbie to this world and I have been lucky on finding Orange! On my tests I want to "Discretize" using a top rank, I mean: I want to check which are the top N most common values, keep them and ...