Cooperative filtering algorithm-based personal preference program recommendation system for IPTV

A system for recommending personalized favorite programs or channels to internet protocol television (IPTV) users, the system comprising:

• a broadcast provider as an IPTV broadcast provider that provides users with TV contents through the Internet;
• a service server to receive a broadcast signal and program information from the broadcast provider, to store corresponding information in respective databases, to calculate the program information based on a recommendation algorithm to quantitatively calculate priority based on a relationship matrix of multiple users and programs, and to list the program information in recommendation order based on the currently broadcast or reproduced program;
• a relay device to receive recommended program list information and a broadcast signal from the service server and to transmit the recommended program list information personalized to each user in real-time and the broadcast signal through a network;
• a TV to output the recommended program list information and the broadcast signal from the relay device;
• wherein the service server comprises:
• a broadcast information database (DB) to store program information for each channel or each time zone received from the broadcast provider in real time;
• a recommended program list generation DB to provide a user with the personalized recommended program list in real time using a collaborative filtering method of quantifying and calculating the relationship matrix of arbitrary users and arbitrary programs through a memory-based collaborative filtering (CF) algorithm;
• and
• an other information DB to store other information data;
• and
• wherein a favorite degree V quantified in the relationship matrix of the arbitrary users and the arbitrary programs is calculated by the following equation;
• v
• =
• ⁢
• 5
• +
• 4
• ×
• (
• VT
• )
• /
• 100
• ⁢
• ⁢
• (
• 10
• <
• VT
• <
• 80
• )
• =
• ⁢
• 0
• ⁢
• ⁢
• (
• VT
• <
• 10
• )
• =
• ⁢
• 10
• ⁢
• ⁢
• (
• VT
• <
• 80
• )
• ⁢
• wherein VT is viewing time percentage (%);
• if VT is 10% or less, it is determined that there is no favorite degree;
• if VT exceeds 10%, it is determined that there is a favorite degree and it is defined that the favorite degree is 5;
• if VT exceeds 80% or more, it is defined that the favorite degree is 10.