Questions tagged [j48]
J48 is an open source Java implementation of the C4.5 algorithm in the Weka data mining tool.
71
questions
0
votes
0
answers
20
views
How to make predictions on un-labeled test data using j48 in weka(3.9.0)?
I have tried converting all the files (training, labeled test data and un-labeled test data) prefereably in arff format and it is working good for my labelled test data. But for unlabelled test data ...
0
votes
0
answers
17
views
Dataset not being accepted by Weka's J48 plugin (C 4.5 algorithm)
I have a "diabetes" dataset with all scalar fields I want to run the C 4.5 algorithm on. When I have it loaded in Weka, the J48 option for decision trees is not selectable. I found a "...
- 63
0
votes
1
answer
49
views
i have loaded a csv file in weka tool but J48 is not highlight
i upload a csv file in weka tool. After preprocessing, i want to apply J48 classifier but J48 is not highlighted there.
i want to apply decision tree classifier but it is not highlighted
0
votes
1
answer
63
views
Weka j48 output
I have confusion about the numbers at the end of the branches of a J48 tree. For example, using the weather.nominal data the tree looks the same, whether the Test options are set to Use training set ...
- 75
0
votes
0
answers
174
views
How to install ant package in java correctly?
jdk version: 17
I'm trying to use j48 in weka for study it, but I got two problems.
First, I run the Run.java, and the complier throw a error: complier can not find java_cup package. So I follow this ...
- 169
0
votes
1
answer
289
views
Using WEKA Filters in Java - Oversampling and Undersampling
I'm having an issue with finding out how to use WEKA filters in the java code. I've looked up help but it seems a little dated as I'm using WEKA 3.8.5 . I'm doing 3 test. Test 1: No Filter, Test 2: ...
- 49
0
votes
0
answers
128
views
make_Weka_classifier("weka/classifiers/bayes/naiveBayes") and J48 not working on my R?
I tried googling around but can't find any answer to this problem.
Currently trying to use Naive Bayes on R using Weka but am getting this error and I also tried using J48 to visualize a decision tree ...
-2
votes
1
answer
427
views
Zero-R model calculation of Sensitivity and Specificity using Confusion Matrix and Statistics with Caret
Here are my results from the confusionMatrix() function in R, this is based on a Zero-R model. I may have setup the function incorrectly, according to its results there's a mismatch between what I ...
0
votes
1
answer
118
views
Weka 3.8 - the decision tree J48 seem to have correct tree to predicate data but fail on the testing
The decision tree J48 generated a tree structure as below.
J48 pruned tree
petalwidth <= 0.6: Iris-setosa (50.0)
petalwidth > 0.6
| petalwidth <= 1.7
| | petallength <= 4.9: Iris-...
- 63
0
votes
1
answer
94
views
J48 Analysis With WEKA
I want to analyze my dataset with WEKA.
csv file
There are 60 apk files. Permission scores are calculated(1 point for neutral, 2-3-4 points for dangerous permissions) for each apk. I would like to ...
1
vote
2
answers
617
views
How visualize j48 tree in weka
I have an output tree in weka but can't view it (right click ...). Is there a tool to generate the resulting tree in an understandable way from the copy of the log (figures)?
-1
votes
1
answer
116
views
J48 algorithm in weka algorithm or flowchart steps [closed]
I am new in the machine learning area. please, I was wondering if you could provide me with algorithm or flowchart steps for J48.
note: I am using the default setting in weka.
thank you for your help.
- 1
1
vote
1
answer
2k
views
What does Number of leaves and Size of tree mean in Weka?
Could someone explain in plain English what the number of leaves and size of tree mean in Weka? I have made my decision tree, and this is what I got below, but I just need an explanation of what these ...
user12502105
0
votes
1
answer
408
views
Weka - How can I improve J48 performance?
I'm working on a data mining project when I need to be able to predict chances of success on a Kickstarter project funding.
I've used a kickstarter dataset which i've found on Kaggle, and i've ...
- 53
0
votes
1
answer
193
views
How to get classification values in RWeka?
can anybody explain how I get the results of each leave in a decision tree made by J48 from the RWeka package?
So for example we have this iris dataset in R:
library(RWeka)
m1 <- J48(Species ~ ....
- 179