Method and apparatus for collaborative filtering for real-time recommendation

A method comprising:

• storing a plurality of rating scores corresponding to a plurality of users, wherein the rating scores represent preferences for a plurality of content items;
• tracking one or more user actions of a new user with respect to one or more particular ones of the plurality of content items;
• generating a preference vector to model preference of the new user with respect to a plurality of categories of content items, wherein the preference vector relates to a plurality of user actions with respect to the plurality of categories;
• computing a new rating score for the new user based on the preference vector;
• and
• determining interest of the new user for the one or more of the particular ones of the plurality of content items based on a comparison of the new rating score and one or more of the plurality of rating scores.

An apparatus comprising:

• at least one processor;
• and
• at least one memory including computer program code for one or more programs,
• the at least one memory and the computer program code configured to, with the at least one processor, cause the apparatus to perform at least the following:
• store a plurality of rating scores corresponding to a plurality of users, wherein the rating scores represent preferences for a plurality of content items;
• track one or more user actions of a new user with respect to one or more particular ones of the plurality of content items;
• generate a preference vector to model preference of the new user with respect to a plurality of categories of content items, wherein the preference vector relates to a plurality of user actions with respect to the plurality of categories;
• compute a new rating score for the new user based on the preference vector;
• and
• determine interest of the new user for the one or more of the particular ones of the plurality of content items based on a comparison of the new rating score and one or more of the plurality of rating scores.

A computer-readable storage medium carrying one or more sequences of one or more instructions which, when executed by one or more processors, cause an apparatus to perform:

• storing a plurality of rating scores corresponding to a plurality of users, wherein the rating scores represent preferences for a plurality of content items;
• tracking one or more user actions of a new user with respect to one or more particular ones of the plurality of content items;
• generating a preference vector to model preference of the new user with respect to a plurality of categories of content items, wherein the preference vector relates to a plurality of user actions with respect to the plurality of categories;
• computing a new rating score for the new user based on the preference vector;
• and
• determining interest of the new user for the one or more of the particular ones of the plurality of content items based on a comparison of the new rating score and one or more of the plurality of rating scores.