1) The document discusses big data problems like volume, velocity, and variety of data and how tools like Hadoop and Word2Vec can help address them. 2) Hadoop is an open-source software that allows massive data storage and processing across multiple machines using MapReduce. 3) Word2Vec represents words as vectors to model relationships between words, allowing uses like finding similar words, analogies, and sentiment analysis. 4) Examples are given of analyzing over 10 million tweets from UK election debates within minutes using these big data tools.