Controversy about pets such as dogs is also growing, and the public health controversy is the most obvious. In order to solve the public health problem of pets outdoors, meet the needs of pet family pets for outdoor hygiene, and make up for the lack of smart pet public toilets in the market and with the development of artificial intelligence technology, the authors propose that “pet toilets” have been put into use in many cities and the emergence of this new thing is mainly aimed at the substantial increase in the number of pets such as dogs in cities, hoping to better solve the problem of pet dogs urinating in public places in the community and provide a more convenient dog service measure for urban residents. Through a questionnaire survey of 100 random volunteers, it was found that 69 people believed that pet toilets were very necessary for society; therefore, from the perspective of artificial intelligence, the development of smart pet toilets and self-service payment systems has been focused on.

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As a scarce public resource, carbon emission rights are essentially a new type of development rights. The rational allocation of limited carbon emission rights is crucial to international climate governance. On the basis of the multi-index method allocation model, this paper proposes a global carbon emission rights allocation model based on FAHP-EWM-TOPSIS, which uses fuzzy analytic hierarchy process and entropy weight method respectively. Determine the subjective weight and objective weight of the evaluation indicators, and use the idea of minimizing the difference to find the optimal proportion of the subjective and objective weights, and then obtain the optimal combination weight, and finally combine the TOPSIS method to score and calculate the reasonable distribution of rights and interests of countries around the world. The results show that the fair share of most countries in the world is between 1% and 2%. Compared with other carbon emission rights allocation strategies, this model takes into account the more comprehensive distribution principles, and the differences between different countries are small, which can better reflect the principle of fairness. The research results provide a new scheme for the allocation of global carbon emission rights, which has certain reference value for future global climate governance.

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