Abstract: The present application provides a glass fiber nozzle structure, bushing and production device. The glass fiber nozzle structure includes a nozzle body and a hole provided on the nozzle body. The hole includes an upper hole portion and a lower hole portion communicated with the upper hole portion and located below the upper hole portion. The lower hole portion has an elongated cross-section. A projection of the lower hole portion is located within a projection of the upper hole portion in a projection on a plane perpendicular to an axis line of the lower hole portion. A length and a width of the lower hole portion have a ratio of 5:1 to 12:1. The glass fiber nozzle of the present application has a simple structure and a long service cycle, and an aspect ratio of flat glass fibers produced by the nozzle structure is maintained between 2.7 and 4.2, thereby effectively improving performance of the flat glass fibers.

Abstract: The present application provides a glass fiber nozzle structure, bushing and production device. The glass fiber nozzle structure includes a nozzle body and a hole provided on the nozzle body. The hole includes an upper hole portion and a lower hole portion communicated with the upper hole portion and located below the upper hole portion. The lower hole portion has an elongated cross-section. A projection of the lower hole portion is located within a projection of the upper hole portion in a projection on a plane perpendicular to an axis line of the lower hole portion. A length and a width of the lower hole portion have a ratio of 5:1 to 12:1. The glass fiber nozzle of the present application has a simple structure and a long service cycle, and an aspect ratio of flat glass fibers produced by the nozzle structure is maintained between 2.7 and 4.2, thereby effectively improving performance of the flat glass fibers.

Abstract: Embodiments of this application provide a seed group spreading method performed at a server. The method includes the following steps: obtaining a positive sample set; obtaining a negative sample set; concatenating each positive sample in the positive sample set with a corresponding positive sample feature to form a positive sample feature vector, and concatenating each negative sample in the negative sample set with a corresponding negative sample feature to form a negative sample feature vector; obtaining a target sample feature set from the positive sample feature vector and the negative sample feature vector according to at least two of a target group index, an information gain, and a logistic regression model; and sending the target sample feature set to a decision end, receiving feedback information of the decision end, and determining, according to the feedback information, whether to spread the seed group.

Abstract: Embodiments of this application provide a seed group spreading method performed at a server. The method includes the following steps: obtaining a positive sample set; obtaining a negative sample set; concatenating each positive sample in the positive sample set with a corresponding positive sample feature to form a positive sample feature vector, and concatenating each negative sample in the negative sample set with a corresponding negative sample feature to form a negative sample feature vector; obtaining a target sample feature set from the positive sample feature vector and the negative sample feature vector according to at least two of a target group index, an information gain, and a logistic regression model; and sending the target sample feature set to a decision end, receiving feedback information of the decision end, and determining, according to the feedback information, whether to spread the seed group.