Pertanyaan yang diberi tag classifier

29
Mengapa xgboost jauh lebih cepat daripada sklearn GradientBoostingClassifier?

Saya mencoba untuk melatih model peningkatan gradien lebih dari 50k contoh dengan 100 fitur numerik. XGBClassifiermenangani 500 pohon dalam waktu 43 detik pada mesin saya, sementara GradientBoostingClassifierhanya menangani 10 pohon (!) dalam 1 menit dan 2 detik :( Saya tidak repot-repot mencoba...

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
16
membuat peta panas seaborn lebih besar

Saya membuat corr()df dari df asli. The corr()df keluar 70 X 70 dan tidak mungkin untuk memvisualisasikan heatmap tersebut ... sns.heatmap(df). Jika saya mencoba untuk menampilkan corr = df.corr(), tabel tidak cocok dengan layar dan saya bisa melihat semua korelasinya. Apakah ini cara untuk...

visualization pandas plotting machine-learning neural-network svm decision-trees svm efficiency python linear-regression machine-learning nlp topic-model lda named-entity-recognition naive-bayes-classifier association-rules fuzzy-logic kaggle deep-learning tensorflow inception classification feature-selection feature-engineering machine-learning scikit-learn tensorflow keras encoding nlp text-mining nlp rnn python neural-network feature-extraction machine-learning predictive-modeling python r linear-regression clustering r ggplot2 neural-network neural-network training python neural-network deep-learning rnn predictive-modeling databases sql programming distribution dataset cross-validation neural-network deep-learning rnn machine-learning machine-learning python deep-learning data-mining tensorflow visualization tools sql embeddings orange feature-extraction unsupervised-learning gan machine-learning python data-mining pandas machine-learning data-mining bigdata apache-spark apache-hadoop deep-learning python convnet keras aggregation clustering k-means r random-forest decision-trees reference-request visualization data pandas plotting neural-network keras rnn theano deep-learning tensorflow inception predictive-modeling deep-learning regression sentiment-analysis nlp encoding deep-learning python scikit-learn lda convnet keras predictive-modeling regression overfitting regression svm prediction machine-learning similarity word2vec information-retrieval word-embeddings neural-network deep-learning rnn
10
Hubungan antara belit dalam matematika dan CNN

Saya sudah membaca penjelasan konvolusi dan memahaminya sampai batas tertentu. Adakah yang bisa membantu saya memahami bagaimana operasi ini berhubungan dengan konvolusi dalam Jaring Saraf Konvolusional? Apakah fungsi seperti filter gyang menerapkan

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