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  "documentTitle": "2019 Air Street Capital The State of AI Report 2019",
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  "authorName": "Nathan Benaich and Ian Hogarth",
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      "text": "August 2017: A single player bot beats a top global Dota2 player in a simplified 1v1 match.\nAugust 2018: A team of bots, OpenAI Five, lost 2 games in a restricted 5v5 best of 3 match in The Internationals.\nApril 2019: OpenAI Five wins 2 back-to-back games vs. the world champion Dota2 team in a live streamed event. Over the 4 day online tournament (Arena), 15,019 total players challenged OpenAI Five to 7,257 Competitive games of which the bot team won 99.4%.\nSystem design: Each bot is a single-layer, 4,096-unit LSTM that reads the game state and is trained through self-play RL (80% against itself and 20% against older versions of itself). Bots report their experience in batches and gradient optimisation is run and averaged globally.",
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