Carbon factor library generation method and device and carbon factor matching method and device

The invention provides a carbon factor library generation method and device and a carbon factor matching method and device. The carbon factor library generation method comprises the following steps: acquiring multiple pieces of matched data of material data and carbon factor data to construct a training sample set, and training a first language processing model to obtain a mapping model; acquiring material attribute information for generating an extended carbon factor library, and inputting the material attribute information into the mapping model to obtain target carbon factor data corresponding to the material attribute information; determining a carbon emission item name of the extended carbon factor data according to the material attribute information, and determining a carbon factor of the extended carbon factor data according to a carbon factor of the target carbon factor data; and generating an extended carbon factor library using the extended carbon factor data. Through the method, the extended carbon