Questions tagged [multiclass-classification]
776 questions
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How to find feature importance for each class in multiclass classification
I have written code to find the importance of each feature in the entire dataset for multiclass classification. Now I want to find feature importance for each class in multiclass classification, i.e. I want to find the list of features (for each…
Manish Yadav
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Can scikit-learn 'dummy classifier' be applied to multiclass scenario
I understand that dummy classifier https://scikit-learn.org/stable/modules/generated/sklearn.dummy.DummyClassifier.html gives a measure of baseline performance and it applies different strategies to predict.
Have found examples of its application in…
Deb
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How to save model from best iteration in xgboost?
I am using XGBClassifier for my image classification. As i am new to machine learning and xgboost. But recently i got to know that the model i am saving by using pickle library after certain iteration is the last iteration not the best iteration.…
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Getting TypeError: sparse matrix length is ambiguous; use getnnz() or shape[0] while doing multi class classification
from sklearn.naive_bayes import CategoricalNB
from sklearn.datasets import make_multilabel_classification
X, y = make_multilabel_classification(sparse = True, n_labels = 15,
return_indicator = 'sparse', allow_unlabeled = False)
from…
mtr_007
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One versus One and One versus All multiclass classification using logistic regression in python
This is my understanding of OvO versus OvA:
One versus One is binary classification like Banana versus Orange. One versus All/Rest classification turns it into multiple different binary classification problems.
My implementation in python for these…
perplexedDev
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Unify classifiers based on their predictions
I am working on classifying texts and images of scientific articles. From the texts I use title and abstract. So far I have achieved good results using an SVM for the texts and not that good using a CNN for the images. I still did a multimodal…
Bruna Brandão
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Predicting next destination in the sequence. What type of classification it is?
How to decide what modelling to use?
Neo
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2x2 confusion matrix in three-class classification?
I am doing classification on a dataset with three classes (Labels Low, Medium, High).
I run the following code to get my confusion matrix:
from sklearn.metrics import confusion_matrix
cm = confusion_matrix(y_test, y_pred)
And I get the following…
Sachin Yadav
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Datasets for Classification
does anyone some good datasets for classification via NLP?
The BBC News Dataset worked very well for me, and this is kind of what I am looking for. (classification of text documents to 3-10 labels)
Sadly, as I want to work with deep learning…
Notaginger
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Multiclassification task using keras
Classification (not detection!) of several objects in one image is the problem. How can I do this using keras.
For example if I have 6 classes (dogs,cats,birds,...) and two different objects (a cat and a bird) in this image. The label would be of…
nuemlouno
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