Mining method of computer data for recommendation systems
A data mining and recommendation system technology, which is applied in computing, electrical digital data processing, special data processing applications, etc., can solve problems such as long time, and achieve less reading times, fast data reading speed, and fast data mining speed Effect
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[0043] The computer data mining method that the present invention proposes for recommendation system comprises the following steps:
[0044] (1) Set an N×M preference matrix R, where N is the number of rows of the preference matrix R, N is equal to the number of users, M is the number of columns of the preference matrix R, and M is equal to the number of items serving users;
[0045] (2) Input the file to the computer, and convert the input file into a sequence file in the mapping simplified model, so that each row in the sequence file is a row vector of the preference matrix R, and the data structure of each row of the preference matrix R is: row Composed of vector subscripts and key-value pair arrays, where the key-value pair array includes the service item number and the user's preference for the service item;
[0046] The data structure of each row of the preference matrix R is shown in the following table, where user i has a total preference for m service items:
[0047]...
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