3results about How to "Solve technical problems with low precision" patented technology

This invention discloses a tool holder for ultrasonic machining, applicable to the field of ultrasonic machining technology. The tool holder includes, from top to bottom, an ultrasonic transducer, an amplitude transformer, a detection unit, and a chuck. The ultrasonic transducer emits a predetermined ultrasonic signal. The amplitude transformer converts the ultrasonic signal emitted by the transducer into mechanical vibration and transmits it to the chuck through the detection unit. The detection unit includes a housing, a support frame, and sensors. The top of the housing is fixedly connected to the amplitude transformer, and the bottom of the housing is fixedly connected to the chuck. The support frame is located inside the housing, and multi-directional hinges are provided on each inner wall side of the support frame near the housing. These multi-directional hinges are connected to the sensors, and the support frame ensures that the sensors remain in contact with the inner walls of the housing at all times. The sensors detect cutting deformation of the housing in different dimensions. The chuck is used to mount the cutting tool. The support frame and multi-directional hinges ensure that multiple sensors remain in contact with the inner walls of the housing at all times, enabling the sensors to detect multi-dimensional deformation of the housing.

The invention discloses an automatic accurate memory expansion and contraction dynamic management method. The method comprises the following steps: counting data access records of a single database table within a preset time range; integrating data consanguinity of all database tables, and simultaneously performing access recording of a current data table and access recording of an upper-level data table on access data; the access record is analyzed, an estimated expansion and contraction threshold value and an expansion and contraction threshold value are calculated, and the expansion and contraction threshold value is larger than the estimated expansion and contraction threshold value; when the access record data reaches the pre-estimated expansion and contraction threshold value, an expansion and contraction value is obtained through calculation; according to the method, the concept of estimating the expansion and contraction threshold value is introduced, memory expansion and contraction operation is carried out in advance, the problem of low response speed is solved, the problem of low cold and hot data judgment precision is solved through integration of the data blood relationship, and by calculating the expansion and contraction value in advance, the access record data can be quickly and accurately judged. The precision of expansion and contraction prediction is improved, and the problems of frequent and repeated operation and resource waste are solved.

This application provides a method, apparatus, medium, and device for retrieving multimodal data. The method includes: responding to receiving a query instruction indicating that input data belongs to the multimodal data, encoding the input data to obtain a query vector corresponding to the query instruction; using the query vector to perform a vector search in a preset vector database to obtain a set of candidate vectors; and based on each candidate vector in the set of candidate vectors, determining a preset entity corresponding to each candidate vector and associated data of the preset entity corresponding to each candidate vector from a preset knowledge graph to obtain a set of candidate associated data, thereby determining the query result corresponding to the query instruction. This application solves the technical problem of low accuracy in multimodal data retrieval in related technologies, achieving the effect of improving the accuracy of multimodal data retrieval.