TAIPEI : Senior executives from two of the world's most important chipmakers, Taiwan's TSMC and South Korea's Samsung Electronics, offered bullish outlooks for artificial intelligence at a major trade show on Wednesday even as their stocks tanked on a fevered day on the markets. TSMC, the world's largest contract chipmaker, dropped as much as 5.5 per cent while Samsung Electronics, the world's biggest maker of memory chips, closed down 3.5 per cent. The losses came after global AI darling