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Cecilia Rodriguez Aragon is an American computer scientist, professor, author, and champion aerobatic pilot who is best known as the co-inventor (with Raimund Seidel) of the treap data structure, a type of binary search tree that orders nodes by adding a priority as well as a key to each node. She is also known for her work in data-intensive science and visual analytics of very large data sets, for which she received the prestigious Presidential Early Career Award for Scientists and Engineers (PECASE).