Competition: Internet public opinion hotspot analysis system based on sentiment analysis

Article directory 0 Preface 1. Background of the topic 2 Data processing 3 Text Sentiment Analysis 3.1 Sentiment analysis-vocabulary construction 3.2 Implementation of text sentiment analysis 3.3 Establish an emotional tendency analysis model 4 Data Visualization Tools 4.1 Introduction to django framework 4.2 ECharts 5 Django uses echarts for visual display 5.1 Modify setting.py to […]

group by and union all

SELECT ‘vacation’ AS keyCode, staff.staff_id AS staffId, staff.staff_name AS staffName, SUM(DATEDIFF(LEAST(staff.end_time, #{endDate}), GREATEST(staff.begin_time, #{startDate}))) AS vacationDays, NULL AS lateDays, NULL AS absenceDays, NULL AS attendanceDays FROM tb_staff_stop_receive_time AS staff WHERE staff.stop_type = 1 AND (staff.begin_time BETWEEN #{startDate} AND #{endDate} OR staff.end_time BETWEEN #{startDate} AND #{endDate}) GROUP BY staff.staff_id UNION ALL SELECT ‘late’ AS keyCode, staff.id […]

Socket network communication NIO

NIO for Socket network communication NIO for Socket network communication NIO: new io, non-blocking IO introduced since java1.4. The java.nio package can solve the shortcomings of BIO blocking, but it is more complicated to learn and use than BIO. It can work in two ways: blocking and non-blocking. A large number of IO connections can […]

Competition Topic Selection: Network Public Opinion Hotspot Analysis System Based on Sentiment Analysis

Article directory 0 Preface 1. Background of the topic 2 Data processing 3 Text Sentiment Analysis 3.1 Sentiment analysis-vocabulary construction 3.2 Implementation of text sentiment analysis 3.3 Establish an emotional tendency analysis model 4 Data Visualization Tools 4.1 Introduction to django framework 4.2 ECharts 5 Django uses echarts for visual display 5.1 Modify setting.py to […]

SpringBoot integrates MinIO to realize multi-part upload/resumable upload of videos (personal test is feasible)

1. Foreword I have done a short video development before, and there are many rough implementations in it. For example, the video upload part is directly uploaded to the cloud service by the front end, without considering the quality of the customer’s network environment and other issues. If a video is almost finished uploading, but […]