Design And Implementation Of Coupon Price Comparison System Based On Android Mobile

With the rapid development of the Internet and mobile payment,more people choose to shop on the mobile APP.The prices and preferential information of the same products on different online shopping platforms are often different,and even the prices of individual products vary greatly.If there is a system to evaluate the price-performance ratio of the product,the user can search for the product on the entire network after clicking the product price comparison and display it after the price comparison,so that the user can buy the most cost-effective product.In order to achieve this function,the paper designed a set of cloud mobile coupon discount system based on Android.The system realizes the product information of the corresponding platform by entering keywords or clicking the category query,and clicking the price comparison button of any product can query the price comparison information of the product or the most similar product in the entire network.The work done in the paper is as follows:First of all,collect and collate data on collected data and price comparison,and conduct a demand analysis on the goals to be achieved by the mobile coupon price comparison system;then,analyze and discuss the key technologies implemented by the system in detail.Mainly include: e-commerce open interface,web crawler,Chinese word segmentation,text similarity comparison and image similarity comparison use and discussion;second,design and implementation of the system,the system design includes the overall structure design,framework Design of logical structure and design of key tables of system database.According to the functional requirements and design ideas,the system is divided into several modules:query submission,information collection,information processing,commodity price comparison and front-end display.The system query is realized by entering the keyword content of the commodity or clicking the commodity classification label.Information collection is mainly based on open API integration calls,supplemented by web crawlers.Information processing,filtering and storing the collected information into My Sql according to the entity relationship of the goods,and then using the word segmentation system of NLPIR to use the string matching method to get the word title keyword set,using cosinesimilarity to calculate the keyword set similarity,and then call the Open CV library The SSIM and LBP methods calculate the similarity of the commodity images,and finally filter the text and image calculation results.Price comparison function,store the calculated similar products into SQLite database,and then compare and sort the prices.Foreground display,configure the required commodity information in the foreground adapter,retrieve the information from the database,and add the corresponding entity relationship to the adapter display.After testing and verification,the system has realized the price comparison function of the entire product,and the front desk displays the list in order of product price.You can jump to the corresponding e-commerce platform to receive the coupon or purchase the product by clicking the coupon collection or purchase link on the product details page.The system uses a combination of text similarity comparison and image similarity comparison to improve the accuracy of querying commodities.