Cross-dynamic filling method for relieving data sparsity problem in recommendation system
A data sparse, recommendation system technology, applied in data processing applications, buying/selling/lease transactions, commerce, etc., can solve problems such as difficulty in recommendation, alleviate the problem of data sparsity, improve personalized experience, and increase merchant revenue.
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[0031] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0032] A cross dynamic filling method for alleviating the data sparsity problem in a recommendation system, comprising the following steps:
[0033] Step 1, perform data preprocessing on e-commerce data;
[0034] Wherein, the e-commerce data preprocessing process is as follows:
[0035] Input: raw e-commerce data;
[0036] Output: preprocessed expert data;
[0037] Step 1.1, extracting user-related static features and dynamic transaction behavior features to obtain a user data table;
[0038] Such as figure 1 As shown, the user data table is an example.
[0039] Step 1.2, extracting product-related features to obtain a product information table;
[0040] Such as figure 2 As shown, the product information table is an example.
[0041] Further, the construction of user-commodity-scoring matrix described in step 2
[0042] Such as image 3 As sh...
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