Open eClass του Οικονομικού Πανεπιστημίου Αθηνών | Επεξεργασία Φυσικής Γλώσσας - Na... | Documents

Επεξεργασία Φυσικής Γλώσσας - Natural Language Processing (MSc CS & MSc ISDS)

INF210 - Ion Androutsopoulos

Documents

Root directory slides_2025_26 The slides of 2025-26.

Up

Bulk Processing

Cancel

	First Name	Size	Date
	nlp_slides_part02_text_classification_with_mostly_linear_models.pdf Text classification with (mostly) linear models: Representing texts as bags of words. Boolean and TF-IDF features. Feature selection and extraction using information gain and SVD. Obtaining word embeddings from PMI scores. Word and text clustering with k-means. Text classification with k nearest neighbors. Linear and logistic regression, stochastic gradient descent. Evaluating classifiers with precision, recall, F1, ROC AUC. Practical advice and diagnostics for text classification with supervised machine learning.	3.7 MB	10/8/25, 4:43 PM
	nlp_slides_part01_ngrams.pdf n-gram language models, estimating probabilities from corpora, entropy, cross-entropy, perplexity, edit distance, context-aware spelling correction, beam-search decoding.	2.94 MB	10/1/25, 1:36 PM
	nlp_slides_part00_introduction.pdf Introduction and course organization.	2.12 MB	10/1/25, 1:36 PM