AI 101 - Class Recordings-Recording Class 7

Video Transcription

Video Summary

The session focused on reviewing homework, explaining statistical concepts like mean and standard deviation, and exploring topics in machine learning and natural language processing (NLP). Initially, the instructor explained how to calculate the mean and standard deviation for different data sets and clarified when to use different formulas for populations versus samples. The session then covered concepts related to NLP and machine learning, emphasizing the use of embeddings and large language models (LLMs) like ChatGPT. Embeddings convert words into numerical vectors, which the models use to understand semantic relationships. Cosine similarity, a metric for comparing vector similarity, was explained. Retrieval Augmented Generation (RAG) was introduced as a method combining document retrieval with generation to ensure responses are contextually relevant and accurate. The session included a demonstration of the Pix2Pix model, an image-to-image translation tool. Various aspects of embeddings, including their use in Word2Vec and the differences with LLM embeddings, were discussed. The instructor answered questions about NLP applications, AI chatbots, and the technical details behind RAG and embeddings, stressing their importance in improving AI interactions.

Keywords

mean

standard deviation

machine learning

natural language processing

embeddings

large language models

cosine similarity

retrieval augmented generation

Pix2Pix model