Abstract: A picture encoding/decoding method and a related apparatus are provided. The picture decoding method includes obtaining a current picture from a video, the current picture being segmented using random access points into multiple video segments supporting a random access function; selecting, from a knowledge base, K reference pictures of the current picture, wherein at least one reference picture in the knowledge base does not belong to a random access segment in which the current picture is located, the random access segment comprising a picture sequence arranged in a decoding order from a closest random access point before the current picture to a closest random access point after the current picture; and decoding the current picture according to the K reference pictures.

Abstract: Electricity retail trading systems and methods for coupling a wholesale market are disclosed. In some embodiments, an electricity retail trading system includes a user login module, a trade unit management module, a first display module, a wholesale market trade module, a retail preliminary distribution module, a data acquisition and deviation calculation module, a second display module, a deviation transfer trade module, a third display module, a retail final distribution module, and a fourth display module. In other embodiments, an electricity retail trading method includes the following steps: (a) user login, (b) trade unit management, (c) declaration and clearing of wholesale market trade, (d) retail preliminary distribution of electricity retailer, (e) data acquisition and deviation quantity calculation, (f) declaration and clearing of deviation transfer market trade, and (g) retail final distribution of electricity retailer.