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Questions tagged [confusion-matrix]

A confusion matrix is a special contingency table used to evaluate the predictive accuracy of a classifier. Predicted classes are listed in rows and actual classes in columns, with counts of respective cases in each cell.

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3answers
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Calculating RMSE AND R-squared from the confusion matrix

I have my confusion matrix as C.mat 8263 20 39 2 3826 14 43 7 4431 My predicted class labels are Ypred and actual labels are Ytest. Ypred ...
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Confusion matrix - classes get confused with each other

I got an example from this book on page 318: Chemometrics for Pattern Recognition By Richard G. Brereton. The example explained that; ...
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How to get predictions with predict_generator on streaming test data in Keras?

In the Keras blog on training convnets from scratch, the code shows only the network running on training and validation data. What about test data? Is the validation data the same as test data (I ...
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What do this Classification evaluation results mean to you? Do they are suspicious or not?

I have collected dataset with two class labels and used the SVM Method to classify the dataset, and this is the results. Does this appear suspicious or not? scikit-learn classifiers with SVM SVC ...
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260 views

Term for relative recall

For in calculating success in information retrieval, precision and recall are fairly standard measurements, relating to accuracy of the results, and to what extent the results are comprehensive, ...
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1answer
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Performance Measures [closed]

I run the following models..Decision tree, Logistic Regression,Naive Bayes, SVM and Random Forest ..I am given certain input features and Respnse feature as whether a customer will buy the product or ...
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1answer
280 views

Understanding ConfusionMatrix for Google Prediction API

I'm trying to analyze my training model, Google Prediction API provides analyze method to get insights for the model. Currently I want to improve confidence levels, for my predictions, I haven't found ...
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1answer
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Python plot for confusion matrix similar to confusion wheel?

I have a confusion matrix with 7 classes and would like to represent the matrix in a graph. Something similar like a confusion wheel. Mainly I need to show, the correct observations in each class and ...
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1answer
34 views

result of correlation function in r

I would like to ask if the matrix that is returned from the R cor() function applied on a dataset, is considered a confusion matrix. Thank you
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1answer
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Multiple confusion matrix for multiple training instances. Which one to take?

I am using Matlab Neural Network toolbox for a classification problem. Now considering a single set of data, if the inbuilt neural network is trained and classified with same data multiple number of ...
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0answers
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Trying to come up with a feature to improve emotion classifier based on facial movement using facial landmarks

I managed to create an emotion recognition system that uses dense optical flow on each entire frame. While the accuracy range is within 80-90% with cross-validation, I am aiming to improve the ...
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1answer
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How to define confusion matrix for classification?

Below is the dataset where the response variable is play with two labels (yes, and no): ...
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1answer
174 views

Kappa From Combined Confusion Matrices

I am trying to evaluate and compare several different machine learning models built with different parameters (i.e. downsampling, outlier removal) and different classifiers (i.e. Bayes Net, SVM, ...
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How to get an aggregate confusion matrix from n different classifications

I want to test the accuracy of a methodology. I ran it ~400 times, and I got a different classification for each run. I also have the ground truth, i.e., the real classification to test against. For ...