4results about How to "Increase data dimension" patented technology

The present disclosure provides an object recommendation method, an object recommendation device, an electronic device and a storage medium, which can be applied to the technical field of big data. The object recommendation method comprises: determining M first objective indexes, N second objective indexes and a target variable relationship matched with an application scene, the target variable relationship being used to determine a to-be-recommended object, the first objective indexes being used to represent transaction characteristics of a user, the second objective indexes being used to represent social relationship characteristics of the user, M being greater than or equal to 1, and N being greater than or equal to 1; obtaining a recommendation data set of a target user, the recommendation data set comprising first objective data corresponding to the first objective indexes and second objective data corresponding to the second objective indexes; and determining the to-be-recommended object according to the M first objective data, the N second objective data and the target variable relationship.

The invention is suitable for the technical field of laser additive manufacturing, and provides a laser additive multi-mode monitoring device which comprises a first mounting plate assembly, a second mounting plate assembly, a powder bed monitoring module, an OT camera monitoring module, a structured light camera module, an infrared monitoring module, a printing substrate and a supporting shell. The supporting shell is of an external bearing structure, and the first mounting plate assembly and the second mounting plate assembly are transversely arranged along preset mounting positions on the top of the supporting shell and are fixedly connected with the supporting shell through detachable fixing pieces. According to the method, multi-modal data is fully covered, and a complete process data link is constructed; acquisition precision and stability are obviously improved, and requirements of severe working conditions are met. And the process optimization of data closed-loop driving is realized, and the forming quality and the large-scale production capacity are improved.

This invention discloses an environmental health analysis method and system based on egg-laying hen farming, relating to the field of livestock environmental monitoring technology, including methods based on NH3 concentration and VOCs. S Concentration and NO X Two-dimensional empirical wavelet transform is performed on the concentration to calculate texture intensity, gradient direction, and local entropy. Spatial texture features are obtained by horizontal stacking based on NH3 concentration, HRV standard deviation, and VOC. S Concentration and NO X Concentration is calculated, time-domain features are calculated, and frequency-domain features are calculated based on heart rate and HRV standard deviation. Weighted summation yields the SPS joint features. This invention improves data dimensionality and monitoring comprehensiveness by collecting multimodal data and calculating spatial texture features, thereby enhancing the accuracy of environmental dynamic analysis. Through SPCA dimensionality reduction and weighted risk scoring models, it provides accurate quantitative evidence for the environmental health status of laying hens, improving the health management level and production efficiency of laying hen farming.

The utility model discloses a magnesia carbon brick performance test bench, which is characterized in that a magnesia carbon brick is a magnesia carbon brick body; comprising a first testing box, a second fixing block arranged above the first testing box, moving mechanisms fixedly connected to the two sides of the second fixing block, a lifting mechanism fixedly connected to the upper end of the second fixing block, a bearing mechanism fixedly connected to the lifting end of the lifting mechanism and a magnesia carbon brick body placed in the bearing mechanism. The acid-alkali liquid soaking mechanism is arranged outside the first testing box, the pressure mechanism is arranged on the side wall of the acid-alkali liquid soaking mechanism, and a camera is fixedly connected to the side wall of the second fixing block. The utility model has the advantages of integration and high efficiency.