Machine Learning, Data Science, NLP, Dimensionality Reduction, Pca.
methods: count vectorizer, Tfdif vectorizer, doc2vec. The best validation results I got from each is as below. Classifier: logistic regression (L2 regularization, regularization strength: 1.0) count vectorizer (80,000 features, n-gram range: 1,2,3, stop words removal: X) — 82.44% tfidf vectorizer