Natural Language Processing from Scratch

Artificial Intelligence

Course Description


This 3-day course is designed to teach the fundamentals of Natural Language Processing (NLP) from the ground up. Participants will learn how to preprocess text, extract features, build language models, and implement key NLP tasks such as sentiment analysis, text classification, and named entity recognition. Using Python and libraries like NLTK, spaCy, and scikit-learn, learners will gain practical skills to build NLP pipelines and understand how machines process human language.


Duration: 3 Days

Format: Instructor-led, hands-on sessions with real datasets, code walkthroughs, and NLP mini-projects

people sitting on chair in front of computer monitor

Description

Course Outline


? Day 1: Introduction to NLP and Text Preprocessing

Session 1: What is NLP and Why It Matters


  • Overview of NLP and its applications
  • NLP vs. traditional text processing
  • Challenges in understanding human language (ambiguity, context, grammar)


Session 2: Text Cleaning and Tokenization


  • Removing noise: punctuation, stop words, case normalization
  • Tokenization techniques (word, sentence)
  • Regular expressions for pattern matching


Session 3: Linguistic Features and Text Normalization


  • Stemming vs. Lemmatization
  • POS tagging and syntactic parsing
  • spaCy and NLTK for linguistic analysis


Lab Activities:


  • Clean and tokenize real-world text (news articles, tweets)
  • POS tag and lemmatize sentences using spaCy
  • Create a preprocessing pipeline from raw text to normalized tokens


? Day 2: Feature Extraction and Core NLP Tasks

Session 1: Text Representation Techniques


  • Bag-of-Words and TF-IDF
  • N-grams and context windows
  • Vectorization with scikit-learn


Session 2: Text Classification


  • Sentiment analysis using logistic regression or Naive Bayes
  • Multi-class classification (e.g., spam detection, topic labeling)
  • Model training, testing, and evaluation


Session 3: Named Entity Recognition and Text Similarity


  • Rule-based and statistical NER
  • Jaccard, cosine similarity, and sentence similarity measures
  • Text clustering and grouping


Lab Activities:


  • Convert a dataset into TF-IDF features
  • Train and evaluate a classifier for movie reviews or tweets
  • Use spaCy to extract named entities from legal or financial text


? Day 3: Sequence Models, Transformers, and Project Showcase

Session 1: Introduction to Sequence Models


  • Word embeddings (Word2Vec, GloVe)
  • Recurrent Neural Networks (brief overview)
  • Using pre-trained embeddings for NLP tasks


Session 2: Transformers and Pretrained Language Models


  • What are Transformers and why they matter in NLP
  • Using Hugging Face Transformers (BERT, RoBERTa, DistilBERT)
  • Fine-tuning vs. zero-shot classification


Session 3: Capstone Project + Final Reflections


  • End-to-end NLP project (e.g., customer feedback analysis or support ticket routing)
  • Presentation and peer feedback
  • Future of NLP: Multilingual models, GPT, ethical NLP design


Lab Activities:


  • Load and apply a BERT model using Hugging Face for classification
  • Compare traditional ML vs. transformer-based performance
  • Build a working NLP pipeline from input to output