Abstract: A method for constructing graph structure of file system includes: a tag recording module, configured for recording corresponding relationships between files and tags; a graph structure module, configured for describing tag composition and interrelationships of nodes where a graph structure is established, wherein the tags at the nodes of the graph structure are called node tags; and a graph construction module, configured for selecting a corresponding file in the tag recording module according to the node tag in the graph structure module, and recording information of the graph structure module corresponding to the file in the tag recording module. The method of the present disclosure intuitively displays the relationships between the files and meets requirements for various structural forms of the file system and multiple file structures.

Abstract: Provided is an item circulation tracking processing method, in this method, an item is taken as a tracking object, and the whole process from purchase to use of an item on any household shopping receipt may be tracked, so as to achieve a full-flow automatic tracking processing of the item after entering the household, serve as a good helper for household item management, and provide a reliable reference for future consumption planning. Further provided are an item circulation tracking processing apparatus, device and a readable storage medium, which have the above beneficial effects, and are not described herein again.

Abstract: A file system being applied to a file library without a directory structure includes a file name correspondence module configured to establish the correspondence between a file name and the FCB of a file; a tag assignment module configured to establish, according to a tag assignment instruction, the correspondence between a tag, which is in a tag library pre-storing at least one tag and corresponds to the tag assignment instruction, and the FCB of a file corresponding to the tag assignment instruction; and a retrieval module configured to receive a retrieval instruction, find, according to the retrieval instruction, a target file corresponding to the retrieval instruction by using at least one of the correspondence between the FCB of the file and the file name or the correspondence between the FCB of the file and the tag, and open and/or display the target file.