Lecture
This lecture covers the process of extracting relations from text using lexico-syntactic patterns, such as 'X such as Y', and constructing graphs based on ISA relations in the food domain. It includes hands-on exercises on loading text files, finding matches with regular expressions, and building graphs to represent hierarchical relationships. The lecture emphasizes the importance of filtering noisy relations to improve graph accuracy and discusses challenges in taxonomy induction, focusing on noise reduction while retaining accurate relations.