US 7,533,399 B2
Programming guide content collection and recommendation system for viewing on a portable device
Yue Ma, Princeton Junction, N.J. (US); Jinhong Guo, Princeton Junction, N.J. (US); Jingbo Zhu, Shenyang (China); Anhui Wang, Shenyang (China); Wenliang Chen, Shenyang (China); and Tianshun Yao, Shenyang (China)
Assigned to Panasonic Corporation, Osaka (Japan)
Filed on Dec. 02, 2004, as Appl. No. 11/2,992.
Prior Publication US 2006/0123448 A1, Jun. 08, 2006
Int. Cl. G06F 3/00 (2006.01); G06F 13/00 (2006.01); H04N 5/445 (2006.01)
U.S. Cl. 725—46 4 Claims
OG exemplary drawing
 
1. An EPG contents collection and recommendation system, comprising:
an EPG database of identifications of available programs, the programs being assigned to a plurality of categories;
a program information acquisition module applying text classification to detailed descriptions of the available programs and computing probabilities of a program being associated with a domain based on a plurality of feature functions, said domain having a collection of programs from one or more of the plurality of categories and having a common trait that is not defined by the plurality of categories; and
an EPG recommendation module recommending an available program to a user based on the text classification;
wherein said program information acquisition module computes P(c1|tp), P(c2|tp), . . . , P(ci|tP), . . . , P(cn|tP) for each domain according to

OG Complex Work Unit Drawing
where Λ={λ1, λ2, . . . , λn} are parameters of the vector representation, fi(x,y)'s are feature functions modeled according to the vector representation, and

OG Complex Work Unit Drawing
is a normalization factor that ensure PΛ(y|x) is a probability distribution.