Product price data acquisition method and system
A data collection system and data collection technology, applied in the field of information collection, can solve the problems of system management and viewing without competing product prices, time-consuming and labor-consuming, etc., and achieve labor cost saving, low accuracy, and high similarity accuracy. Effect
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Embodiment 1
[0059] attached Figure 1-3 It can be seen that, as a product price data collection method, the establishment of a category mapping table inside and outside the station; discrimination of similar products; through http requests, based on web crawlers to capture product data of the target website,
[0060] 1) Build a text index for all participating products;
[0061] 2) Construct an image index of the main images of all products participating in the price comparison; based on text similarity discrimination; based on image similarity discrimination; product similarity fusion; similar product price comparison.
[0062] The steps of text similarity discrimination are as follows:
[0063] 1) Perform text word frequency statistics, calculate BM25 coefficient, and obtain preliminary target similar data range collection from text index;
[0064] 2) For the preliminary target similar data range set, calculate the Jaccard distance and the space vector cosine similarity distance based...
Embodiment 2
[0096] attached Figure 1-3 It can be seen that it is a product price data collection system, including an information processing server, and the information processing server includes: a proxy server for capturing data, a capturing server, and a server for calculating similar products.
[0097] The server processing content for calculating similar products includes: text similarity calculation processing steps, image similarity calculation processing steps, message queue processing steps, configuration file management processing steps, and product price comparison processing steps.
[0098] The text similarity calculation processing step further includes;
[0099] 1) Perform text word frequency statistics, calculate BM25 coefficient, and obtain preliminary target similar data range collection from text index;
[0100] 2) For the preliminary target similar data range set, calculate the Jaccard distance and the space vector cosine similarity distance based on the title dimensi...
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