2 results about "Event retrieval" patented technology

The present application relates to the technical field of information engineering knowledge graph construction, and particularly relates to a supervision knowledge graph dynamic modeling method based on multi-source heterogeneous data fusion. The method constructs a dynamic evolution and cross-source consistent knowledge network by designing a four-dimensional knowledge graph modeling framework, combining entity alignment of a graph neural network, relationship extraction of remote supervision, and attribute processing of weighted fusion. For a multi-modal data missing scenario, a virtual feature compensation mechanism (historical event retrieval, multi-dimensional feature weighted fusion) is used to generate virtual features and map them to the graph, effectively filling in the data and solving the problem of incomplete knowledge coverage in complex engineering scenarios. A compliance entropy evaluation model is introduced to quantify the compliance state of the supervision knowledge graph from three dimensions of rule coverage, data consistency, and traceability integrity, breaking through the limitations of the traditional artificial compliance check in terms of lag and subjectivity.

This invention belongs to the field of intelligent video surveillance technology and discloses a factory hazardous area monitoring storage and intrusion behavior recognition and early warning system. By incorporating a distributed hierarchical storage module, it automatically configures differentiated storage duration and multi-copy backup strategies based on the intrusion hazard level and area risk level. The first-level solid-state drive enables real-time data and second-level abnormal event retrieval and playback, the second-level mechanical hard drive stores regular video, and the third-level offline archiving medium archives high-risk event data for a long time. At the same time, it generates an immutable hash verification chain for medium and high-risk events, and automatically cleans up abnormal data in batches on a periodic basis, realizing intelligent management of security data throughout its entire life cycle. This not only significantly reduces storage costs but also ensures the complete retention and secure traceability of critical data. The multi-modal preprocessing module completes the spatiotemporal alignment and adaptive interference filtering of video, infrared thermal imaging, millimeter-wave radar, and vibration sensor data.