The Study for the Influencing Factors of the Box Office and Prediction Based on Machine Learning Models -- Petri Net-based Prediction of the Maintenance Time of a Special Vehicle Model -- Serverless Computation and Related Analysis Based on Matrix Multiplication -- Research on Modern Intelligent Sofa Design for Solitary Youth -- Design and Application of Data Management System for the Coronavirus Pandemic -- Performance Analysis of Matrix Multiplication Based on Serverless Platform -- AUV Path Planning Based on Improved Ant Colony Algorithm -- A novel action recognition method based on attention enhancement and relative entropy -- Application of combinatorics based on discrete analysis in WCET embedded software testing technology -- Path Planning Based on Multi-parameter Adaptive Improved Elite Ant Colony Algorithm -- An Efficient Model for Dorsal Hand Vein Recognition Based on Combination of Squeeze-and-Excitation Block and Vanilla ResNet -- Underwater Image Clearing Algorithm Based on the La-placian Edge Detection Operator -- Comparison of Data Processing Performance of Hadoop and Spark Based on Huawei Cloud and Serverless -- Application of collaborative robot in cigarette production line for automatic distribution of packaging materials -- Multi-Models Study on the Influence of Space-Time Factors on the Shared Bike Usage -- Stock's closing price Prediction based on GRU neural network -- Design and Implementation of Online Book Sale System -- The Advance and Performance Analysis of MapReduce -- Random Forest Algorithm for Forest Fire Prediction -- Recognition of Chinese Event Elements based on BiLSTM-CRF -- An Innovative Information System for Health and Nutrition Guidance -- Research on energy saving scene of 5G base stations based on SOM+K-means two-stage clustering algorithm -- Smart Substation Synthetical Smart Prevent Mishandling System Based on Topology Model and Intelligent IOT -- Fresh Products Application Information Management System.