Questions tagged [orange]
Use for questions about Orange, the free, open-source, component-based, data mining and machine learning software suite.
193
questions
0
votes
1answer
41 views
1
vote
2answers
954 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
0answers
30 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
2answers
47 views
How to process multivariant questions in Orange
can you explain how to process multivariant questions in Orange? For example:
I have sociological survey database. Among the others there is question:
How would you like to spend your weekend? (pick ...
1
vote
1answer
47 views
Orange file import method for raw binaries
I tried to add a binary import method to
class FileFormat(metaclass=FileFormatMeta)
in io.py, but gave up trying to adapt a copy of the CSV method since so much is specific to CSV issues and the ...
5
votes
1answer
155 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
1
vote
1answer
43 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
304 views
Equation of Linear Regression
I performed Linear Regression on the data set with two attributes (Salary and YearsExperience) using orange data mining tool.
Salary is a dependent variable and <...
1
vote
3answers
164 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.
0
votes
1answer
337 views
Trying to get Orange connected to Postgres Database
I recently came across Orange, and am very keen to try it for our company's purposes (around 20 potential users, perhaps more). I have installed Orange (latest version) and am trying to connect to our ...
0
votes
1answer
25 views
Having Trouble Using Orange Data Mining in Linear Progression in Continuous Data
I'm having trouble with a simple task. I just imported an Excel sheet (CSV) into Orange.
It recognized the features as continuous, but it couldn't run Linear Progression or Discretized on it.
How ...
-1
votes
1answer
107 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
vote
1answer
346 views
Orange Linear Regression and scikit-learn linear regression gives different results
I am trying to cross-validate my scikit-learn script by mean of Orange3, thus obtaining a nice visual representation.
Doing step by step, to keep it simple I just tried to cross-validate a simple ...
1
vote
0answers
29 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
275 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
108 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 ...
3
votes
0answers
36 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 ...
1
vote
0answers
118 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 ...
2
votes
0answers
52 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 ...
1
vote
0answers
147 views
get data in python script in orange [closed]
How to get sentiment analysis data widget in python script in orange and how this data used for other purpose and apply on this sentiments data different methods
1
vote
1answer
121 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 ...
1
vote
0answers
64 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
182 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
1answer
838 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 ...
4
votes
1answer
62 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.
0
votes
1answer
80 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 ...
1
vote
0answers
23 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
74 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
108 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 "...
3
votes
1answer
3k 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?
0
votes
1answer
6k 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
0answers
147 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
1answer
190 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 ...
1
vote
1answer
49 views
Classification execution time - Orange
Is there any way to find out execution time for classification algorithms in orange?
1
vote
1answer
146 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 ...
0
votes
1answer
384 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 ...
-1
votes
1answer
97 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 ...
1
vote
1answer
162 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 ($AUC$, $CA$, $F1$) ...
1
vote
0answers
217 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
349 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?
2
votes
0answers
635 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
242 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' ...
2
votes
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....
0
votes
1answer
361 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.
0
votes
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
votes
1answer
474 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.
1
vote
2answers
928 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
vote
0answers
189 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
votes
2answers
247 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 ...
0
votes
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’ ...
