411 search results - page 26 / 83 » Rank Estimation in Missing Data Matrix Problems |
PKAW
2010
13 years 6 months ago
2010
Abstract. Estimating influence of a node is an important problem in social network analyses. We address this problem in a particular class of model for opinion propagation in whic...
SIAMSC
2008
13 years 7 months ago
2008
In this study, nonnegative matrix factorization is recast as the problem of approximating a polytope on the probability simplex by another polytope with fewer facets. Working on th...
ICNSC
2007
IEEE
14 years 2 months ago
2007
IEEE
The paper addresses object localization via a distributed sensor network. A centralized estimation approach is undertaken along with a selective node activation strategy to ensure...
SIGIR
2005
ACM
14 years 1 months ago
2005
ACM
In this paper we use a Unified Relationship Matrix (URM) to represent a set of heterogeneous data objects (e.g., web pages, queries) and their interrelationships (e.g., hyperlinks...
RECOMB
2004
Springer
14 years 8 months ago
2004
Springer
This paper is concerned with the reconstruction of perfect phylogenies from binary character data with missing values, and related problems of inferring complete haplotypes from h...