“Most conceptual categories in the human mind and in language are characterized by a core of clear cases, with a blurry periphery of unclear, borderline cases.”— Geoffrey Leech, amazon.com
“A critical task in natural language understanding is to comprehend the topic of a sentence. The topic could be a tag (such as politics, music, gaming, immigration or adventure-sports), but usually it isn’t merely a named entity based task such as a person’s name or extracting location. This type of…”— Suman Deb Roy, hackernoon.com