Functional Metrics

Aggregation Metrics

auc	Computes Area Under the Curve (AUC) using the trapezoidal rule.
mean	Compute weighted mean.
sum	Compute weighted sum.
throughput	Calculate the throughput value which is the number of elements processed per second.

Classification Metrics

binary_accuracy	Compute binary accuracy score, which is the frequency of input matching target.
binary_auprc	Compute AUPRC, also called Average Precision, which is the area under the Precision-Recall Curve, for binary classification.
binary_auroc	Compute AUROC, which is the area under the ROC Curve, for binary classification.
binary_binned_auprc	Binned Version of AUPRC, which is the area under the AUPRC Curve, for binary classification.
binary_binned_auroc	Compute AUROC, which is the area under the ROC Curve, for binary classification.
binary_binned_precision_recall_curve	Compute precision recall curve with given thresholds.
binary_confusion_matrix	Compute binary confusion matrix, a 2 by 2 tensor with counts ( (true positive, false negative) , (false positive, true negative) ) See also multiclass_confusion_matrix
binary_f1_score	Compute binary f1 score, the harmonic mean of precision and recall.
binary_normalized_entropy	Compute the normalized binary cross entropy between predicted input and ground-truth binary target.
binary_precision	Compute precision score for binary classification class, which is calculated as the ratio between the number of true positives (TP) and the total number of predicted positives (TP + FP).
binary_precision_recall_curve	Returns precision-recall pairs and their corresponding thresholds for binary classification tasks.
binary_recall	Compute recall score for binary classification class, which is calculated as the ratio between the number of true positives (TP) and the total number of actual positives (TP + FN).
binary_recall_at_fixed_precision	Returns the highest possible recall value given the minimum precision for binary classification tasks.
multiclass_accuracy	Compute accuracy score, which is the frequency of input matching target.
multiclass_auprc	Compute AUPRC, also called Average Precision, which is the area under the Precision-Recall Curve, for multiclass classification.
multiclass_auroc	Compute AUROC, which is the area under the ROC Curve, for multiclass classification.
multiclass_binned_auprc	Binned Version of AUPRC, which is the area under the AUPRC Curve, for multiclass classification.
multiclass_binned_auroc	Compute AUROC, which is the area under the ROC Curve, for multiclass classification.
multiclass_binned_precision_recall_curve	Compute precision recall curve with given thresholds.
multiclass_confusion_matrix	Compute multi-class confusion matrix, a matrix of dimension num_classes x num_classes where each element at position (i,j) is the number of examples with true class i that were predicted to be class j.
multiclass_f1_score	Compute f1 score, which is defined as the harmonic mean of precision and recall.
multiclass_precision	Compute precision score, which is the ratio of the true positives (TP) and the total number of points classified as positives (TP + FP).
multiclass_precision_recall_curve	Returns precision-recall pairs and their corresponding thresholds for multi-class classification tasks.
multiclass_recall	Compute recall score, which is calculated as the ratio between the number of true positives (TP) and the total number of actual positives (TP + FN).
multilabel_accuracy	Compute multilabel accuracy score, which is the frequency of input matching target.
multilabel_auprc	Compute AUPRC, also called Average Precision, which is the area under the Precision-Recall Curve, for multilabel classification.
multilabel_binned_auprc	Binned Version of AUPRC, which is the area under the AUPRC Curve, for multilabel classification.
multilabel_binned_precision_recall_curve	Compute precision recall curve with given thresholds.
multilabel_precision_recall_curve	Returns precision-recall pairs and their corresponding thresholds for multi-label classification tasks.
multilabel_recall_at_fixed_precision	Returns the highest possible recall value give the minimum precision for each label and their corresponding thresholds for multi-label classification tasks.
topk_multilabel_accuracy	Compute multilabel accuracy score, which is the frequency of the top k label predicted matching target.

Image Metrics

peak_signal_noise_ratio

Compute the peak signal-to-noise ratio between two images.

Ranking Metrics

click_through_rate	Compute the click through rate given a click events.
frequency_at_k	Calculate the frequency given a list of frequencies and threshold k.
hit_rate	Compute the hit rate of the correct class among the top predicted classes.
num_collisions	Compute the number of collisions given a list of input(ids).
reciprocal_rank	Compute the reciprocal rank of the correct class among the top predicted classes.
weighted_calibration	Compute weighted calibration metric.
retrieval_precision	Retrieval Precision is a metric that measures the proportion of relevant items retrieved out of the total items retrieved by an information retrieval system.
retrieval_recall	Retrieval Recall is a metric that measures the proportion of relevant items retrieved out of the all relevant items.

Regression Metrics

mean_squared_error	Compute Mean Squared Error, which is the mean of squared error of input and target Its class version is torcheval.metrics.MeanSquaredError.
r2_score	Compute R-squared score, which is the proportion of variance in the dependent variable that can be explained by the independent variable.

Statistical Metrics

Text Metrics

bleu_score	Compute BLEU score given translations and references for each translation.
perplexity	Perplexity measures how well a model predicts sample data.
word_error_rate	Compute the word error rate of the predicted word sequence(s) with the reference word sequence(s).
word_information_preserved	Compute the word information preserved score of the predicted word sequence(s) against the reference word sequence(s).
word_information_lost	Word Information Lost rate is a metric of the performance of an automatic speech recognition system.