Questions tagged [orange]
Use for questions about Orange, the free, open-source, component-based, data mining and machine learning software suite.
189
questions
0
votes
1answer
19 views
Input and output layer activation functions of neurons in Orange
What are the activation functions of the neurons in the input and output layer of a neural network model from the Orange machine learning application?
0
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0answers
92 views
How to measure the Optimal-number of Topics & Topic-Coherence score in Orange's LDA Topic-Modeling?
I'm trying to build a suitable "code-free" Topic Model in "Orange Data Mining" software for the experimental part of my Thesis, in order to analyze the themes and trends of ...
2
votes
0answers
31 views
LDA in Orange Linear Projection widget?
I'm struggling to get an LDA in Orange 3.28 (GUI).
Using the good'ol iris dataset, loaded from the dataset widget:
The data, as you can see, is loaded as it should and has "iris" set as ...
1
vote
0answers
29 views
Classification with Orange error “test and train datasets have differents target variable”
m having a problem on the widget "Test and score" used for classification. Im doing a classification on images and i would like to use the widget "test and score" with the option &...
0
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0answers
11 views
Loading data directly from BigQuery to Orange
I would like to ask you if there is possibility in Orange to load to it data directly eg. from BigQuery? I added block "Python script" to the flow and my script looks like that:
...
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0answers
25 views
ANOVA Feature Scoring
in order to score features, in ORANGE, using ANOVA scoring, the features should have a normal distribution?
Thank you,
J
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0answers
28 views
Orange Data Mining - Data Sampler Widget
In the Data Sampler widget, there is an option for Cross validation for which one fold can remain unused. Is this option for nested cross validation alternating which fold you hold back?
2
votes
1answer
16 views
Out-of-bag error in Orange3
There is some way to see the out-of-bag error in Orange3? The widget Test and Score only reports mean squared error, root mean square, mean absolute error, coefficient of determination and root-mean-...
1
vote
1answer
87 views
Removing duplicate rows in orange3
In Orange3, I have a table with row duplicates. How can I simply remove the duplicated rows to keep only one copy of each?
I feel like Orange3 is great but cannot do simple tasks. I hope I just did ...
0
votes
0answers
15 views
Analysis of table to make compressing model
I have a table with hundred of entries in this style:
//HEADER//CODE1//decimals_here//CODE4//decimals_here//CODE3//decimals_here//CODE5//decimals_here//ENDING//
I ...
1
vote
0answers
41 views
whether to use normalization while performing PCA?
I have an excel file containing a table where I registered the frequency of three linguistic phenomena in 72 poems. Since the poems have different lengths I normalized the results dividing each value ...
1
vote
0answers
16 views
Creating API For Accessing New Website
Is there a way to add a API in Orange Data Mining Tool to access a new website? An example would be can I create and add an API for CNN or MSNBC or FOXNEWS? Currently in Orange in the text mining add-...
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0answers
28 views
How to check PCA in Orange?
Input file:
T
X
Y
A
1
3
A
5
8
B
7
6
B
4
2
T is categorial target variable
I calculate PCA in Orange:
components
X
Y
1
PC1
-0.707107
-0.707107
2
PC2
0.707107
-0.707107
T
PC1
PC2
1
A
1.58032
-...
1
vote
0answers
31 views
Data table manipulations in Orange
I am having some issues doing operations on my data table in Orange.
I need to split my table into two different tables, being a table containing all the instances for y = yes and a table containing ...
1
vote
0answers
54 views
Stratified K Fold Cross Validation in Orange: python script
I am using Orange to predict customer churn and compare different learners based on accuracy, F1, etc.
As my problem is unbalanced (10% churn - 90% not churn), I want to oversample. However, when ...
2
votes
1answer
87 views
Cross validation for unbalanced dataset using Orange data mining tool
I am using the Orange data mining tool to build and analyze models (decision tree, ANN, ...) predicting customer churn. As this is an imbalanced class problem (10% churn, 90% not churn), I need to ...
1
vote
0answers
60 views
Orange data mining: Balancing data set using imblearn code
I am using an unbalanced dataset. I wanted to oversample my dataset using a python script (Scripting code for class imbalance in Biolabs Orange). However, it still gives me an error
...
0
votes
0answers
13 views
Pre-process 'standardize' function not working correctly
I am running an Orange workshop with 10 participants. When I use the 'standardize' function in the 'pre-process' widget, the data distributions of only some participants is not standardized. The mean ...
1
vote
1answer
24 views
Cluster Hyperspectral Images in Orange
Orange has a hyperspectral dataset called "liver cirrhosis" and you can visualize the hyperspectral image using the hyperspectral image widget. However, I would like to perform various ...
1
vote
0answers
74 views
Using if statement as a model in orange
I am seeking to evaluate logistic regression against a rule-based (nested if-else statements) classification in Orange.
The steps I've taken to investigate this are as follows:
I could not identify ...
1
vote
1answer
76 views
Extracting text into columns
I have a set of customer reports, each is in ms word file. they are all in a similar pattern, for example they start with Name: --, Age: --, Date: --, etc...
is there a way to extract particular ...
1
vote
0answers
47 views
Orange ROC analysis widget [closed]
ROC analysis widget has an option to change prior target class probability. I'd like to know, when and how it should be used. Playing with it changes the slope of iso-performance line. Each classifier ...
0
votes
1answer
182 views
Error using corpus widget in Orange v 3.25.0 text mining and no import document option?
I am experimenting with Orange data mining tool. When I use the 'Corpus' widget from the text mining section it gives me the error: [![Corpus widget error][1]][1]
I ...
-1
votes
1answer
213 views
P-values in orange data mining
I'm new to orange and struggling to find p-values, using linear regression tools.
It seems the outputs are only coefficients. What am I missing?
1
vote
1answer
31 views
Geo Add-on Choropleth Widget not found
I am trying to create a Choropleth map using the Chorolpeth widget from the Geo Add-on in Orange. However, this widget is not appearing? Any ideas?
My current version: Orange version 3.24.1 for ...
1
vote
0answers
62 views
Trying to use term document matrix as input to orange 3
I have a CSV file that has tokens as columns and documents as rows, where the rest of the cells are ints that represent term frequency. I'm trying to use this as input into Orange 3, but Orange 3 ...
1
vote
0answers
35 views
How can I map category values to , e.g., increasing numbers (for anonymization purposes, say) in Orange?
I have a dataset that contains data that needs to be preserved for e.g. clustering purposes, but whose concrete values do not matter. For example, order numbers or serial numbers with lots of ...
1
vote
1answer
132 views
Visualizing categorical data in scatter plot with Orange (version > 3.18)
Why in Orange versions after 3.18 is not possible to visualize categorical data in Scatter Plot widget?
2
votes
1answer
143 views
How can I “export” a model from Orange once I have prototyped a solution?
Using Orange, I would like to use the underlying python model within the control system of my device. The device is a simple machine which is not connected to the internet. My intent is to use the ...
0
votes
1answer
108 views
PCA and orange software
I am analysing if 15 books can be grouped according to 6 variables (of the 15 books, 2 are written by an author, 6 by an other one, and 7 by an other one).
I counted the number of occurrences of the ...
0
votes
1answer
121 views
Orange Geo Map does not show background map
We are running Orange with our students and most of them are having problems with running the Geo Map widget. It does not show any background map. In the bottom an error message is displayed: ...
1
vote
1answer
48 views
Suggestion for a better way to organize data to generate frequent item-sets?
I have a data of a bag of words in a document. The data has 3 columns: {document number, word number, count of the word in the number}. I am supposed to generate ...
1
vote
0answers
29 views
Does Orange allow you to change the decision threshold in modelling widgets?
I can't seem to find an option with the modeling widgets for Orange to allow changes in the decision thresholds. Is this option available?
1
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0answers
27 views
How to upload SOFT files in Orange?
I have a dataset which I obtained from NCBI, but it is a SOFT file. When I upload the SOFT file to the file widget in Orange, it cannot be uploaded. Is there a way to upload SOFT files in Orange?
1
vote
0answers
59 views
How to save data table in Orange3
I've setup a workflow in Orange3 and have tested some models. Now, I have the results in a Data table widget and I'm wondering if there is a way in which I can save the output of said widget?
I've ...
2
votes
2answers
544 views
Is there Orange support for MySQL and SQLite?
I would like to be able to directly access both MySQL and SQLite databases as part of an Orange workflow. I see there is support for PostgreSQL and (possibly)
3
votes
1answer
2k views
What is Orange all about?
I read a lot about Orange here in the forum. I know that it is a software developed at the University of Ljubljana. I guess it has some kind of GUI which makes it a "cheap and easy" way to ...
1
vote
0answers
48 views
Import data from URL [closed]
I put a dropbox link to the URL box in the File widget and the data got imported perfectly. I saved the workflow that I would like to share with my team. But when I reopen the workflow, the URL link ...
1
vote
0answers
17 views
tsm_system_time extension not available on Azure Postgresql [closed]
The tsm_system_time extension is not available on Azure Postgresql. Anyway to use Orange without this extension on the server?
2
votes
0answers
42 views
How does orange encode categorical values for a neural network? What function does it do and how?
How does orange encode categorical values for a neural network? What function does it do and how? I can not find it in the code.
2
votes
0answers
195 views
Orange3 / python script / scipy interpn
I tried to create a learner using the Orange canvas script from the Python script widget, but I have not been able to find an effective example.
What I would like to do is:
1) Create a learner based ...
0
votes
0answers
81 views
Orange widget with OpenCV setMouseCallback
I am designing an Orange Widget for facial recognition.
I would like to draw a rectangle around faces captured in video by setting mouse events with ...
1
vote
0answers
101 views
Importing Orange Pickled Models in Jupyter
I am doing some testing with geoscience data and a few supervised methods in Orange. I have been saving these models as pickle models, but I would like to import them in my Jupyter notebook. How can I ...
1
vote
0answers
57 views
Regarding the number of iterations functionality
I have a query regarding the number of iterations functionality in Orange, which is available with several widgets.
For instance, in the neural networks widget, the maximum number of iterations is ...
1
vote
0answers
60 views
Manually changing coefficients of a model
Is there a way to manually change parameters of a model in Orange 3?
I have a dataset and trained a logistic regression model on it. Now, I can alter the coefficients (beta values) of the logistic ...
1
vote
0answers
78 views
Orange Biolab Pivot Table widget - missing
I downloaded most recent version of Orange. I can not find the Pivot Table widget anywhere. When right clicking on the search menu shown, it does not appear anything when writing Pivot Table phrase.
...
1
vote
0answers
41 views
Can Orange read an excel file on Sharepoint or Onedrive? [closed]
I would like to share my Orange file through a team SharePoint site, including its linked (excel) datafile. Is this possible?
2
votes
0answers
82 views
Text Mining with Pubmed Widget Orange
When I was running the text mining I did not have an issue for 57 different searches. I was able to retrieve all of the records regardless of how many there were.
Until these 2 errors popped up.
I ...
1
vote
1answer
127 views
Orange release notes
What is the best way to understand changes made in new releases? For example, Orange 3.21 came out recently and I’m eager to understand any prominent fixes or modified features.
2
votes
0answers
292 views
coefficients from decision regression tree
I have a data on which I apply decision regression tree since it gives better numerical values as predicting house prices. I have almost 45 features in which price is the target value. With linear ...
