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AI's historic victory turns a new tech chapter

¦]¦¹¥þ¬q¥i­^Ķ¦p¤U¡GThe South Korean Go master Lee Sedol played the final Go game against Google's artificial intelligence (AI) programme AlphaGo on March 15. Having previously beaten AlphaGo in the fourth match and gaining an advantage at the beginning of the fifth round, Lee was unable to keep up the momentum and was finally defeated after a hard fight, ending this striking "man versus machine" tournament with a final score of 1-4. AlphaGo climbed up from the fourth to the second in the world rankings after defeating Lee, following after the world's top ranked Chinese player Ke Jie, while Lee remained at the fifth.

The game was reversed in the middle and Lee surrendered after 280 moves. Holding his head with both hands and feeling stressed, Lee said that he really hoped to win with such a good start in the last round, but admitted he was not capable enough to head for victory. "I think AlphaGo's level of expertise is still manageable by human and I regret the game is over. AlphaGo never had psychological fluctuation and was highly focused, which are some of its invincible advantages when competing with human players. I've spent quite a lot of time getting adapted to its style," Lee reflected.

Demis Hassabis, chief executive officer of the Google's company DeepMind which created AlphaGo, deemed the five-match series historic. Lee took home US$170,000 (approximately HK$1,320,000) for participating and winning one match. Experts have predicted that AlphaGo's AI technology can be applied to the field of "delayed reward", such as financial investment and medical assessment.¡½Ãe¹Å»ö

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