A method is provided for determining a correlation between a reference user and another user on the basis of two sets of ratings, where each rating is associated with a respective user. In response to a trigger,user ratings associated with the reference user and user ratings associated with the other user are collected, and all co- rated items of these two sets are correlated in the basis of an adjusted cosine correlation function which is weighted by a first and a second weighting function. The correlation is then stored and may be repeated for a plurality of users. The stored correlations may be used e.g. for ranking purposes.
申请公布号
WO2010036164(A1)
申请公布日期
2010.04.01
申请号
WO2008SE51096
申请日期
2008.09.29
申请人
TELEFONAKTIEBOLAGET LM ERICSSON (PUBL);LIDSTROEM, MATTIAS;BJOERK, JONAS;SOEDERBERG, JOAKIM;HOLMBERG, MARTIN
发明人
LIDSTROEM, MATTIAS;BJOERK, JONAS;SOEDERBERG, JOAKIM;HOLMBERG, MARTIN