Questions marquées «naive-bayes-classifier»

29
Pourquoi xgboost est-il tellement plus rapide que sklearn GradientBoostingClassifier?

J'essaie de former un modèle d'augmentation de gradient sur plus de 50k exemples avec 100 fonctionnalités numériques. XGBClassifiergère 500 arbres en 43 secondes sur ma machine, alors qu'il GradientBoostingClassifierne gère que 10 arbres (!) en 1 minute et 2 secondes :( Je n'ai pas pris la peine...

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16
agrandir la carte thermique de Seaborn

Je crée un corr()df à partir d'un df d'origine. Le corr()df est sorti 70 X 70 et il est impossible de visualiser le heatmap ... sns.heatmap(df). Si j'essaie d'afficher le corr = df.corr(), le tableau ne correspond pas à l'écran et je peux voir toutes les corrélations. Est-ce un moyen d'imprimer...

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10
Relation entre la convolution en mathématiques et CNN

J'ai lu l' explication de la convolution et je la comprends dans une certaine mesure. Quelqu'un peut-il m'aider à comprendre comment cette opération est liée à la convolution dans les réseaux neuronaux convolutionnels? Le filtre est-il une fonction gqui applique du

machine-learning neural-network deep-learning cnn convolution machine-learning ensemble-modeling machine-learning classification data-mining clustering machine-learning feature-selection convnet pandas graphs ipython machine-learning apache-spark multiclass-classification naive-bayes-classifier multilabel-classification machine-learning data-mining dataset data-cleaning data machine-learning data-mining statistics correlation machine-learning data-mining dataset data-cleaning data beginner career python r visualization machine-learning data-mining nlp stanford-nlp dataset linear-regression time-series correlation anomaly-detection ensemble-modeling data-mining machine-learning python data-mining recommender-system machine-learning cross-validation model-selection scoring prediction sequential-pattern-mining categorical-data python tensorflow image-recognition statistics machine-learning data-mining predictive-modeling data-cleaning preprocessing classification deep-learning tensorflow machine-learning algorithms data keras categorical-data reference-request loss-function classification logistic-regression apache-spark prediction naive-bayes-classifier beginner nlp word2vec vector-space-models scikit-learn decision-trees data programming