Trustworthy Representation Learning Across Domains

As AI systems have obtained significant performance to be deployed widely in our daily live and human society, people both enjoy the benefits brought by these technologies and suffer many social issues induced by these systems. To make AI systems good enough and trustworthy, plenty of researches have been done to build guidelines for trustworthy AI systems. Machine learning is one of the most important parts for AI systems and representation learning is the fundamental technology in machine learning. How to make the representation learning trustworthy in real-world application, e.g., cross domain scenarios, is very valuable and necessary for both machine learning and AI system fields. Inspired by the concepts in trustworthy AI, we proposed the first trustworthy representation learning across domains framework which includes four concepts, i.e, robustness, privacy, fairness, and explainability, to give a comprehensive literature review on this research direction. Specifically, we first introduce the details of the proposed trustworthy framework for representation learning across domains. Second, we provide basic notions and comprehensively summarize existing methods for the trustworthy framework from four concepts. Finally, we conclude this survey with insights and discussions on future research directions.Comment: 38 pages, 15 figure

The impact of emission trading schemes on firm competitiveness: Evidence of the mediating effects of firm behaviors from the guangdong ETS

The pilot carbon emission trading scheme in Guangdong Province (GD ETS) of China has fulfilled seven compliance periods, and its potential impact on regulated firms has drawn increasing attention. This article empirically investigated the impact of the ETS on firm behaviors and competitiveness (i.e., cost competitiveness and green competitiveness) by surveying all power firms in the GD ETS. Low-carbon management, carbon asset transactions, and energy saving and emission reduction technology were identified as firm behaviors. The relationships among the ETS, firm behaviors, and firm competitiveness were tested by using bootstrap multiple mediation analyses. The results showed that the GD ETS has a positive impact on firm behaviors. The three examined firm behaviors actually reflect the depth of firm participation in the ETS. The more the firm participates, the greater the mediating effects that the firm behaviors exert on firm competitiveness are. Both carbon asset transactions and energy saving and emission reduction technology have a mediating effect on the relationship between the GD ETS and cost competitiveness, while only the latter mediates the relationship between the GD ETS and green competitiveness. Implications for policy makers and firm operators were discussed

Investigation on a Novel Type of Tubular Flame Burner with Multi-stage Partially-Premixing Features for Liquid-Fueled Gas Turbine

A new combustion system, which consists of an evaporator and a tubular flame burner with multi-stage inlets, has been developed to meet the growing concerns over the fuel flexibility and flame stability of gas turbines. In the evaporator, a flash-boiling atomization technology was adopted to enhance atomization, evaporation, and fuel-air mixing to provide the burner with the optimized fuel-rich mixture under various operating conditions with liquid fuels. In the new-type of tubular flame burner, a tangential multi-stage inlet structures were proposed to realize fast fuel/air mixing and thus clear combustion with features of excellent stability, uniform temperature profile, and non-flashback. As a practice, ethanol was selected as the liquid fuel to examine the performances of the evaporator and the multi-stage tubular flame burner. Results show that ethanol spray has been fully evaporated under a wide load range owing to the flash-boiling technology, and tubular flames can be established stably and without flashback, and specifically in a wide range of equivalence ratio from 0.23 to 4.6, which has been greatly expanded compared to those of the conventional tubular flame burners. The temperature near the burner outlet were found uniformly distributed in the radial direction across the burner central area, but became very low when approaching the burner cylinder wall, which is believed helpful for decreasing the heat loss to the burner liner and thus preventing it from ablation. These results imply that this new burner has great potentials in application to the advanced gas turbine