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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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13 views

How do I start Orange

I installed Orange via conda install orange3 I see the package installed in Anaconda3 / pkgs directory however there is not desktop icon nor can I find Orange via ...
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1answer
12 views

How to change the threshold value in orange?

How can I change the threshold value for each classifier? In the ROC analysis curve we are allowed to remove the tick from "default threshold"
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12 views

Imaging Scoring using Regression in Orange?

I am using the Orange platform and am trying a use case for scoring cancer cellularity in images. Some facts about the training set: Consists of 2K~ TIF images, for which (2) labels exist: the RID (...
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16 views

SQL Server credential doesn't work from Orange [on hold]

I am trying to have a SQL Table widget in my Orange canvas, which is connected to SQL Server. I have installed pymssql, and in the SQL Table dialog, I do get an ...
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0answers
18 views

Cannot load the entire text dataset

I have downloaded the popular Enron email dataset. The dataset has two folders. When I try to import this in the Import documents widget, it skips files. Out of 5172 files it skips fifteen of them. ...
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0answers
8 views

Multiply a dataset's column through Python in Orange Web Services

I have a dataset loaded into Orange that has many columns. The first column is called 'Time' and has values expressed in Seconds. I would like to know how can I use Python (within the Python Script ...
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1answer
12 views

Orange Web Services - Problems installing imblearn module for Python Script

I am trying to implement SMOTE in Orange Web Services, but having troubles with the imblearn module. Following screenshot is from Orange Python Script widget: ...
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1answer
36 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 ...
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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.
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1answer
35 views

We are using PostgreSQL to store big data and are concerned it may crash the on-board Neural Net. Any thoughts?

We have figured out how to write Big Data to our PostgreSQL database. We would like to run this (normalized) data into the on-board Neural Network in Orange. Our lead programmer said he thought Orange ...
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0answers
51 views

How to run Orange from the source code? [closed]

I'd like to contribute to Orange. To get used to the code, I tried to run the source code directly under Windows 10, so far without success. I have numpy and scipy installed, and the source code for ...
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0answers
15 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 ...
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0answers
17 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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1answer
33 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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37 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 ...
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0answers
32 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 ...
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2answers
160 views

Orange Error - Installing Text Add On

I am trying to install the Text add-on for Orange, and I am getting the following error on my Macbook. What's interesting is ...
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1answer
26 views

How do I change the colours on scatter plots? [closed]

Probably an obvious one, but I just cannot figure it out. I know there's a drop down menu on the left that allows you to decide what to colour, but I cannot seem to find a way to change what colour ...
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0answers
16 views

Using orange3 on a remote server or in the cloud [closed]

My question there is a way to run the orange, not on a local computer, but on a remote server, even in the cloud? My notebook has only 8GB memory and limited number of CPU core, which is insufficient ...
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1answer
29 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 ...
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1answer
41 views

Orange3: Is it possible to get the total number of rows for a given column from inside 'Feature Constructor'?

I'm using the Orange3 gui and have been asked to generate basic plots where values relative to a "mean" or "Percentile Rank" are colorized. I looked in ...
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2answers
132 views

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 ...
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2answers
27 views

Function related to Orange GUI

i am a new beginner to Orange GUI data mining software and i have some question related to that. First, i would like to know if there is any search function so i can search if the column contain a ...
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0answers
25 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 ...
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1answer
46 views

Orange 3.15 GUI window size issue (Windows 8.1)

I'd just like to report an annoying GUI bug I am experimenting under Windows 8.1 using Orange 3.15. The work space available doesn't size up with the window making the use of the software quite ...
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1answer
32 views

Dataset with disproportionately more of a single label than any other

I'm using the data analysis software Orange to analyze rows of data with labels $\{H, T,L\}$. $T$ is the neutral state of the system I'm trying to model so data is almost always labeled with $T$. ...
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1answer
74 views

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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2answers
44 views

Elastic net regression in orange

The penalty term for Elastic regression is written as How are the values of lambda's calculated if the slider is moved from the right to the left. I have read most the material available on the ...
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1answer
40 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 ...
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1answer
30 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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1answer
29 views

Orange wont allow me to set target for corpus

I need to do a linear regression on an excel file. I have descriptions in one column and category in the other. I need to be able to set the target to do a linear regression. However, Orange doesn't ...
2
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1answer
93 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: ...
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1answer
30 views

Bioinformatics widget

Why is there are no Volcano-plot or MA-plot in bioinformatics widget?
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1answer
47 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 ...
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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 (...
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1answer
36 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 ...
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1answer
33 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 ...
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1answer
50 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
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1answer
27 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 ...
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1answer
115 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 <...
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3answers
84 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.
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1answer
70 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 ...
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1answer
19 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 ...
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1answer
39 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 ...
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1answer
137 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 ...
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0answers
18 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)....
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0answers
89 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....
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0answers
36 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 ...
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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 ...
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0answers
23 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 ...