发明名称 |
EFFICIENT MODELING SYSTEM |
摘要 |
A technique for efficiently factoring a matrix in a recommendation system. Usage data for a large set of users relative to a set of items is provided in a usage matrix R. To reduce computational requirements, the usage matrix is sampled to provide a reduced matrix R'. R' is factored into a user matrix U' and an item matrix V. User vectors in U' and V are initialized and then iteratively updated to arrive at an optimal solution. The reduced matrix can be factored using the computational resources of a single computing device, for instance. Subsequently, the full user matrix U is obtained by fixing V and analytically minimizing an error in UV=R+error. The computations of this analytic solution can be divided among a set of computing devices, such as by using a map and reduce technique. Each computing device solves the equation for different respective subset of users. |
申请公布号 |
WO2014074739(A3) |
申请公布日期 |
2014.10.16 |
申请号 |
WO2013US68994 |
申请日期 |
2013.11.07 |
申请人 |
MICROSOFT CORPORATION |
发明人 |
NICE, NIR;KOENIGSTEIN, NOAM;PAQUET, ULRICH;KEREN, SHAHAR;SITTON, DANIEL;KREMER, DROR;ROITMAN, SHAI |
分类号 |
G06F17/00;G06F17/16 |
主分类号 |
G06F17/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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