2 results about "Bigram" patented technology

The present application relates to big data technology, and discloses a bad review classification method based on a BERT model, which comprises the following steps: data integration and data cleaning are performed on evaluation information to obtain effective evaluation data, and manual sentiment labeling is performed on the effective evaluation data to obtain labeled data; the labeled data is used to perform parameter tuning on a pre-trained BERT model, the trained BERT sentiment classification model is used to classify the evaluation data, positive sentiment data is removed, and data with an emotional category that is not equal to a star level in the evaluation is extracted, screened and labeled; the labeled data and the effective evaluation data are used to retrain the BERT model; negative sentiment data is subjected to word segmentation, a BTM (Bigram Topic Model) is used to extract a bad review theme of the negative word segmentation, and the evaluation information is classified according to the bad review theme. The present application also provides a bad review classification device, equipment and medium based on the BERT model. The present application can improve the accuracy of customer bad review information extraction.

The invention relates to the technical field of screening display, and particularly discloses an AI service window background display method and system, and the method comprises the steps: obtaining dialogue information, and converting the dialogue information into a bigram sequence; counting all bigram sequences in a preset time period, determining a TF-IDF value of each bigram in each bigram sequence based on the counted bigram sequences, and converting each bigram sequence into a vector; on the basis of the vectors, clustering is carried out on all the bigram sequences, and for each type of bigram sequences, an identification sequence is selected from the type of bigram sequences; dialogue information corresponding to the identification sequence is read, the difference rate between the identification sequence and the related sequence is obtained, and the dialogue information and the difference rate are counted to serve as display content and sent to the background; according to the method, multiple pieces of dialogue information are simplified into a limited number of texts and the difference rate through a feature extraction scheme and a clustering scheme, the background display content is greatly simplified, and the work pressure of background workers is reduced.