1. The document discusses the history and recent developments in natural language processing and deep learning. It provides an overview of seminal NLP papers from the 1990s to 2010s and deep learning architectures from 2003 to present.
2. Key deep learning models discussed include neural language models, word2vec, convolutional neural networks, and LSTMs. The document also notes the increasing interest and research in deep learning starting in 2012 by tech companies like Google, Facebook and Baidu.
3. Application examples mentioned include search engines, conversational agents, social media and news summarization tools.