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Over 70 large language models with more than a billion parameters have been released in China, according to Baidu CEO Robin Li. Baidu joins other Chinese companies, including SenseTime and AI startups Baichuan Intelligent Technology, Zhipu AI, and MiniMax, that have launched AI chatbots after receiving regulatory approval. The latest version of Baidu's AI chatbot, Ernie 3.5, was recently released to the general Chinese public.

While over a billion parameters is not much, with some models breaking the trillion parameter barrier, there is still a place for smaller, specialized models, and it still shows the overall speed at which the Chinese AI industry is trying to bring commercially viable AI models to market. However, they are handicapped by hardware, as US regulations prevent the export of Nvidia's latest AI chips, the A100 and H100 to China and other countries. OpenAI's ChatGPT is not available in China.

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CityDreamer, a generative AI model, creates unbounded 3D cities by separating the generation of building instances from other background objects. This model allows for better handling of the diverse appearance of buildings in urban environments - one of the main challenges compared to generating natural environments, as methods such as GANCraft do.

To enhance the realism of the generated 3D cities, the authors constructed two datasets, OSM and GoogleEarth, which provide more realistic city layouts and appearances, easily scalable to other cities worldwide.

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