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Text Analytics A.Y. 2020/21


Andrea Esuli (

Office hours: by appointment, send email.


Lectures will be given using Microsoft Teams. Join the Text Analytics Team here.

Lecture recording is available on Microsoft Teams for delayed viewing.

Day Hour Room
Wednesday 9-11 Text Analytics Team
Thursday 9-11 Text Analytics Team


The course targets text analytics systems and applications to respond to business problems by discovering and presenting knowledge that is otherwise locked in textual form. The objective is to learn to recognize situations in which text analytics techniques can solve information processing needs, to identify the analytic task/process that best models the business problem, to select the most appropriate resources methods and tools, to collect text data and apply such methods to them. Several applications context will be presented: information extraction, sentiment analysis (what is the nature of commentary on an issue), spam and fake posts detection, quantification problems, summarization, etc.

  1. Disciplinary background: Natural Language Processing, Information Retrieval and Machine Learning
  2. Mathematical background: Probability, Statistics and Algebra
  3. Linguistic essentials: words, lemmas, morphology, PoS, syntax
  4. Basic text processing: regular expression, tokenisation
  5. Data collection: twitter API, scraping
  6. Basic modelling: collocations, language models
  7. Introduction to Machine Learning: theory and practical tips
  8. Libraries and tools: NLTK, Spacy, Keras, pytorch
  9. Classification/Clustering
  10. Sentiment Analysis/Opinion Mining
  11. Information Extraction/Relation Extraction/Entity Linking
  12. Transfer learning
  13. Quantification


Exam will consist in a project to be agreed with the teacher and an oral exam. The outcome of the project will be some code and a report of the activity (4-10 pages is the typical length range). Oral exam will consist in the presentation and discussion of the project.

The purpose of the project is to let you have some hands on experience on applying the concepts and methods seen during the course to practical text analytics problems.

Projects may be based on challenges proposed in either research forums (Semeval, Evalita) or other platforms (Kaggle). Students are also invited to propose a project on problem based on other sources (e.g., recent papers on ArXiv CL or AI), or their own interests.

Students may work solo or in groups up to three persons.

Before starting working on the project students must contact the teacher so as to agree on the contents of the project and get a go ahead.

Lecture Notes

Date Lecture Notes
2020/09/16 Introduction to the course 00_-_introduction_to_the_text_analytics_course.pdf 01_-_natural_language_and_text_analytics.pdf
2020/09/17 Introduction to probability 02_-_introduction_to_probability.pdf
2020/09/23 Setup of Python environment 03_-_introduction_to_python.pdf
2020/09/24 Introduction to Python
2020/09/30 Probabilistic Language Models 04_-_probabilistic_language_models.pdf
2020/10/01 Probabilistic Language Models
2020/10/07 Text Indexing, Regular expressions 05_-_text_indexing.pdf
2020/10/08 NLTK, Collocations
2020/10/14 NLP tools, Spacy, Text indexing, preprocessing
2020/10/15 Vector space model, ML for text analytics 06_-_machine_learning_for_text_analytics.pdf
2020/10/21 Scikit learn, pipeline
2020/10/22 Feature engineering
2020/10/28 Experimental protocols, optimization 07_-_experiments.pdf
2020/10/29 Sequence labeling, information extraction 08_-_information_extraction.pdf
2020/11/04 Inception, spacy
2020/11/05 Data collection 09_-_data_collection.pdf
2020/11/11 Introduction to neural networks 10_-_a_primer_on_neural_networks.pdf 10.1_-_example_of_backpropagation.pdf
2020/11/12 From SVM to NN, deep learning
2020/11/18 Convolutional and Recurrent networks, text generation
2020/11/19 Word embeddings, neural language models 11_-_neural_language_models.pdf
2020/11/25 Document embeddings, the Transformer
2020/11/26 BERT fine-tuning
2020/12/2 Parsing 12_-_parsing-1.pptx
2020/12/3 Parsing 12_-_parsing-2.pptx
2020/12/9 Introduction to Sentiment Analysis, Sentiment Lexicons 13_-_sentiment_analysis.pdf 14_-_lexical_resources_for_sentiment_analysis.pdf
2020/12/10 Sentiment Classification 15_-_sentiment_classification.pdf


  1. D. Jurafsky, J.H. Martin, Speech and Language Processing. 3nd edition, Prentice-Hall, 2018.
  2. B. Liu, Sentiment Analysis and Opinion Mining. Morgan & Claypool Publishers, 2012.
  3. S. Bird, E. Klein, E. Loper. Natural Language Processing with Python.

Previous editions

mds/txa/start.1612257498.txt.gz · Ultima modifica: 02/02/2021 alle 09:18 (16 mesi fa) da Andrea Esuli