Perguntas com a marcação «language-model»

29
Por que o xgboost é muito mais rápido que o sklearn GradientBoostingClassifier?

Estou tentando treinar um modelo de aumento de gradiente com mais de 50 mil exemplos com 100 recursos numéricos. XGBClassifierlida com 500 árvores em 43 segundos na minha máquina, enquanto GradientBoostingClassifierlida com apenas 10 árvores (!) em 1 minuto e 2 segundos :( Não me preocupei em...

scikit-learn xgboost gbm data-mining classification data-cleaning machine-learning reinforcement-learning data-mining bigdata dataset nlp language-model stanford-nlp machine-learning neural-network deep-learning randomized-algorithms machine-learning beginner career xgboost loss-function neural-network software-recommendation naive-bayes-classifier classification scikit-learn feature-selection r random-forest cross-validation data-mining python scikit-learn random-forest churn python clustering k-means machine-learning nlp sentiment-analysis machine-learning programming python scikit-learn nltk gensim visualization data csv neural-network deep-learning descriptive-statistics machine-learning supervised-learning text-mining orange data parameter-estimation python pandas scraping r clustering k-means unsupervised-learning
12
Quantas células LSTM devo usar?

Existem regras práticas (ou regras reais) referentes à quantidade mínima, máxima e "razoável" de células LSTM que devo usar? Especificamente, estou relacionado ao BasicLSTMCell da TensorFlow e à num_unitspropriedade. Suponha que eu tenha um problema de classificação definido por: t - number of...

rnn machine-learning r predictive-modeling random-forest python language-model sentiment-analysis encoding machine-learning deep-learning neural-network dataset caffe classification xgboost multiclass-classification unbalanced-classes time-series descriptive-statistics python r clustering machine-learning python deep-learning tensorflow machine-learning python predictive-modeling probability scikit-learn svm machine-learning python classification gradient-descent regression research python neural-network deep-learning convnet keras python tensorflow machine-learning deep-learning tensorflow python r bigdata visualization rstudio pandas pyspark dataset time-series multilabel-classification machine-learning neural-network ensemble-modeling kaggle machine-learning linear-regression cnn convnet machine-learning tensorflow association-rules machine-learning predictive-modeling training model-selection neural-network keras deep-learning deep-learning convnet image-classification predictive-modeling prediction machine-learning python classification predictive-modeling scikit-learn machine-learning python random-forest sampling training recommender-system books python neural-network nlp deep-learning tensorflow python matlab information-retrieval search search-engine deep-learning convnet keras machine-learning python cross-validation sampling machine-learning
11
Existem bons modelos de linguagem prontos para uso em python?

Estou prototipando um aplicativo e preciso de um modelo de linguagem para calcular a perplexidade em algumas frases geradas. Existe algum modelo de linguagem treinado em python que eu possa usar facilmente? Algo simples como model = LanguageModel('en') p1 = model.perplexity('This is a well...

python nlp language-model r statistics linear-regression machine-learning classification random-forest xgboost python sampling data-mining orange predictive-modeling recommender-system statistics dimensionality-reduction pca machine-learning python deep-learning keras reinforcement-learning neural-network image-classification r dplyr deep-learning keras tensorflow lstm dropout machine-learning sampling categorical-data data-imputation machine-learning deep-learning machine-learning-model dropout deep-network pandas data-cleaning data-science-model aggregation python neural-network reinforcement-learning policy-gradients r dataframe dataset statistics prediction forecasting r k-means python scikit-learn labels python orange cloud-computing machine-learning neural-network deep-learning rnn recurrent-neural-net logistic-regression missing-data deep-learning autoencoder apache-hadoop time-series data preprocessing classification predictive-modeling time-series machine-learning python feature-selection autoencoder deep-learning keras tensorflow lstm word-embeddings predictive-modeling prediction machine-learning-model machine-learning classification binary theory machine-learning neural-network time-series lstm rnn neural-network deep-learning keras tensorflow convnet computer-vision