By Stephanie Hamel (Reuters) – Publicis, the world’s largest advertising group by market value, said on Thursday it will invest 300 million euros ($326.94 million) in artificial intelligence (AI) over the next three years, as part of its new plan to become “the industry’s first AI-powered intelligent system”. The group said in a film presentation – ahead of it annual results publication in February – that it will invest 100 million euros in 2024 alone, fully funded by “internal efficiencies” and with no dilutive impact on its operating margin. The maker of the Heineken and Barilla pasta campai…